CN113690724B - Ultrashort pulse source for processing nonferrous metals - Google Patents
Ultrashort pulse source for processing nonferrous metals Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06712—Polarising fibre; Polariser
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
- H01S3/10023—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1123—Q-switching
- H01S3/117—Q-switching using intracavity acousto-optic devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses an ultrashort pulse source for processing nonferrous metals, belonging to the technical field of photoelectronic equipment. The optical fiber polarization beam splitter structurally comprises a pumping source (1), a wavelength division multiplexer (2), an optical coupler (3), a saturable absorber (4), a polarization sensitive isolator (5), an electric control polarization controller (6), an optical fiber polarization beam splitter (7), ytterbium-doped optical fibers (8), a feedback loop (9), a collimator (10), a preprocessing module (11), a spectrum shaping module (12), an optical fiber amplification module (13), a spectrum moving module (14) and the like. According to the invention, the spectrum moving module compresses the optical pulse, so that the pulse width is effectively compressed, and meanwhile, the spectrum center wavelength is moved, so that the obtained blue-green optical pulse can be used for processing nonferrous metals.
Description
Technical Field
The invention belongs to the technical field of photoelectronic equipment, and particularly relates to an ultrashort pulse source for processing nonferrous metals.
Background
The working wavelength of the blue-green light band laser is concentrated in the range of 450-570nm, and the blue-green light band laser has important application prospects in the fields of laser display, medical treatment, industrial processing, national defense and the like. The blue-green light single-frequency laser has high coherence, and is an important light source in the application fields of high resolution and precision spectroscopy, light frequency standard and clock, atomic cooling and capture, quantum optics, quantum information and the like. In addition, both laser systems are used for material processing, such as glass, certain types of polymers, and ceramics. The development of electric vehicles and renewable energy sources has increased the demand for non-ferrous metals, of which efficient, accurate and reliable processing is of paramount importance in modern industrial production. High power lasers operate primarily at infrared wavelengths, and nonferrous metals have low absorption and high thermal conductivity, and are therefore unsuitable for processing with infrared lasers. Non-ferrous metals have absorption spectra several times higher than the infrared range in the green region of the spectrum. Green lasers have natural advantages over infrared lasers, such as lower threshold intensities for deep fusion welding, less and less melt blow out and spatter, and greater depth and width of the weld. Therefore, green lasers are ideal laser sources for nonferrous metal processing.
The copper vapor laser, the double-frequency radiation infrared laser or the argon ion laser can obtain blue-green light output, but the gas laser has the defects of large volume, short service life, unstable work and the like, works in a continuous mode, is difficult to obtain higher peak power through a laser modulation technology, and has limited pulse energy. Although blue-green laser can be directly excited by a semiconductor material, the blue-green laser has the defects of low spectral line width, low output power and the like. In comparison, the optical fiber laser takes the rare earth element doped optical fiber as a gain medium, can realize ultrashort pulse output, and has the characteristics of simple operation, compact structure, good compatibility, high conversion efficiency, low cost, simple maintenance, no need of water cooling and the like. Obtaining blue-green laser output by directly performing nonlinear frequency conversion on the fiber laser is an effective technical means.
In summary, the existing systems capable of generating high-power ultrashort blue-green light pulses for nonferrous metal processing have inherent disadvantages, and further improvement is needed.
Disclosure of Invention
In order to overcome the defects of low pulse power and low pulse width generated by a traditional system, the invention provides an ultrashort pulse source for processing nonferrous metals, which realizes the power amplification of pulses through an optical fiber amplification module, obtains ultrashort pulses through a spectrum shaping module, and obtains blue-green light pulses through a spectrum moving module, thereby obtaining high-power ultrashort blue-green light pulses for processing nonferrous metals.
The purpose of the invention is realized by the following technical scheme:
an ultrashort pulse source for processing nonferrous metals has the structure that a pumping source 1 is connected with the 980nm end of a wavelength division multiplexer 2, the 1550nm end of the wavelength division multiplexer 2 is connected with the input end of an optical coupler 3, the output end of the optical coupler 3 is connected with one end of a saturable absorber 4, the other end of the saturable absorber 4 is connected with the input end of a polarization sensitive isolator 5, the output end of the polarization sensitive isolator 5 is connected with the input end of an electronic control polarization controller 6, the output end of the electronic control polarization controller 6 is connected with the input end of an optical fiber polarization beam splitter 7, and the output end of the optical fiber polarization beam splitter 7 is connected with the common end of the wavelength division multiplexer 2 through an ytterbium-doped optical fiber 8;
the device is characterized in that the structure is also provided, another output end of the optical fiber polarization beam splitter 7 is connected with an input end of a feedback loop 9, one output end of the feedback loop 9 is connected with another input end of the electric control polarization controller 6, another output end of the feedback loop 9 is connected with an acousto-optic modulator 1116 in the preprocessing module 11, another output end of the optical coupler 3 is connected with an input end of a collimator 10, an output end of the collimator 10 is connected with one end of the preprocessing module 11, the other end of the preprocessing module 11 is connected with an input end of a spectrum shaping module 12, an output end of the spectrum shaping module 12 is connected with one end of an optical fiber amplifying module 13, and the other end of the optical fiber amplifying module 13 is connected with a spectrum moving module 14;
the feedback loop 9 has a structure that an input end of a photodetector 901 is used as an input end of the feedback loop 9 and connected to the fiber polarization beam splitter 7, an output end of the photodetector 901 is connected to an input end of an amplifier 902, an output end of the amplifier 902 is connected to one input end of an MCU906 through a filter 903 and an a/D converter 904, the other output end of the amplifier 902 is connected to the other input end of the MCU906 through a frequency divider 905, the MCU906 is used as an output end of the feedback loop 9, one output end is connected to the other input end of the electrically controlled polarization controller 6, and the other output end is connected to an acousto-optic modulator 1116 in the preprocessing module 11 to control the acousto-optic modulator to operate;
the pre-processing module 11 has an optical path structure that a light pulse passes through a first pre-processing isolator 1101, a first pre-processing half-wave plate 1102, a first pre-processing convex lens 1103 and a first pre-processing concave lens 1104 and then enters a first pre-processing collimator 1105, the first pre-processing collimator 1105 enables the light pulse to enter a first pre-processing reflector 1106, the first pre-processing reflector 1106 reflects the light pulse to a pre-processing grating 1107, the light pulse output by the pre-processing grating 1107 is transmitted to a pre-processing concave mirror 1109 through a pre-processing convex mirror 1108, the pre-processing concave mirror 1109 reflects the light pulse back to the pre-processing convex mirror 1108, the pre-processing convex mirror 1108 transmits the light pulse to the pre-processing grating 1107 and the pre-processing grating 1107 transmits the light pulse to a second pre-processing reflector 1110, the second pre-processing mirror 1110 reflects the light pulse back to the pre-processing grating 1107, the light pulse passes through the pre-processing grating 1107 and then passes through the pre-processing convex mirror 1108 and the pre-processing concave mirror 1109 again according to the route described above, the light pulse after multiple reflections returns to the pre-processing grating 1107, the pre-processing grating 1107 reflects the light pulse to the third pre-processing mirror 1111, the third pre-processing mirror 1111 transmits the light pulse to the second pre-processing collimator 1112, the light pulse passes through the second pre-processing collimator 1112, the second pre-processing concave lens 1113, the second pre-processing convex lens 1114, the third pre-processing convex lens 1115, the acousto-optic modulator 1116, the fourth pre-processing convex lens 1117, the second pre-processing isolator 1118, the second pre-processing half-wave plate 1119, the fifth pre-processing convex lens 1120, the third pre-processing collimator 1121, the pre-processing ytterbium-doped fiber 1122, the fourth pre-processing collimator 1123 and the sixth pre-processing convex lens 1124, the pumping light generated by the pre-processing photodiode 1128 passes through the fifth pre-processing collimator 1127 and the seventh pre-processing convex lens 1126, then enters the fourth pre-processing mirror 1125, is fused with the light pulse previously entering the fourth pre-processing mirror 1125, the fused light pulse is reflected to the fifth pre-processing mirror 1129 through the fourth pre-processing mirror 1125, is reflected to the third pre-processing half-wave plate 1130 through the fifth pre-processing mirror 1129, and finally is output by the pre-processing quarter-wave plate 1131;
the spectrum shaping module 12 has an optical path structure, a light pulse enters a first spectrum shaping reflecting mirror 1202 through a polarizer 1201, and is reflected to a spectrum shaping filter 1203 by the first spectrum shaping reflecting mirror 1202, the light pulse output by the spectrum shaping filter 1203 is reflected by a second spectrum shaping reflecting mirror 1204 and a third spectrum shaping reflecting mirror 1205 and is reflected back to the spectrum shaping filter 1203 again, the light pulse output by the spectrum shaping filter 1203 is reflected to a fifth spectrum shaping reflecting mirror 1207 through a fourth spectrum shaping reflecting mirror 1206, the light pulse is reflected to a first spectrum shaping grating 1210 by the fifth spectrum reflecting mirror 1207, the light pulse is reflected to a sixth spectrum shaping reflecting mirror 1209 by the first spectrum shaping grating 1210 and is reflected to a first spectrum shaping concave mirror 1208, the light pulse is transmitted to a second spectrum shaping concave mirror 1213 after passing through a first spectrum shaping concave mirror 1208 and a spatial light modulator 1211, the second spectrum shaping concave mirror 1213 reflects the light pulse to the eighth spectrum shaping mirror 1214, and the light pulse is reflected to the second spectrum shaping grating 1215 by the eighth spectrum shaping mirror 1214 and then reflected to the seventh spectrum shaping mirror 1212, and the output of the seventh spectrum shaping mirror 1212 is the output of the spectrum shaping module 12;
the optical fiber amplification module 13 has an optical path structure that a light pulse passes through a first optical fiber amplification collimator 1301, an optical fiber amplification photonic crystal fiber 1302 and a second optical fiber amplification collimator 1303 and then enters a first optical fiber amplification reflector 1304, a pump light generated by a first optical fiber amplification photodiode 1307 passes through a third optical fiber amplification collimator 1306 and a second optical fiber amplification reflector 1305 and then enters a first optical fiber amplification reflector 1304 to be fused with the light pulse which previously enters the first optical fiber amplification reflector 1304, and the fused light pulse passes through a first optical fiber amplification quarter-wave plate 1308, a first optical fiber amplification half-wave plate 1309, an optical fiber amplification isolator 1310, a second optical fiber amplification half-wave plate 1311, an optical fiber amplification polarization beam splitter 1312, a third optical fiber amplification half-wave plate 1313, a fourth optical fiber amplification collimator 1314, a fourth optical fiber amplification half-wave plate 1315, a first optical fiber amplification convex lens 1316, The pumping light generated by the second fiber amplification photodiode 1324 enters the third fiber amplification reflector 1321 after passing through the seventh fiber amplification collimator 1323 and the third fiber amplification convex lens 1322 after passing through the fifth fiber amplification collimator 1317, the ytterbium-doped rod-type fiber 1318, the sixth fiber amplification collimator 1319 and the second fiber amplification convex lens 1320, and is fused with the light pulse previously entering the third fiber amplification reflector 1321, the fused light pulse is reflected to the fourth fiber amplification reflector 1325 through the third fiber amplification reflector 1321, is reflected to the fifth fiber amplification half-wave plate 1326 through the fourth fiber amplification reflector 1325, and the light pulse passing through the fifth fiber amplification half-wave plate 1326 is finally output by the second fiber amplification quarter-wave plate 1327;
the spectrum shifting module 14 has an optical path structure that a first spectrum shifting grating 1401 transmits an incident light pulse to a second spectrum shifting and holding prism 1403 through a first spectrum shifting and holding prism 1402, the second spectrum shifting and holding prism 1403 reflects the light pulse back to the first spectrum shifting and holding prism 1402, the first spectrum shifting and holding prism 1402 transmits the light pulse to a second spectrum shifting and holding prism 1403 again, the second spectrum shifting and holding prism 1403 reflects the light pulse back to the first spectrum shifting and holding prism 1402, the first spectrum shifting and holding prism 1402 transmits the light pulse to a second spectrum shifting grating 1404, the second spectrum shifting grating 1404 transmits the light pulse to a third spectrum shifting and holding prism 1405, the light pulse passes through the third spectrum shifting and holding prism 1405 and then passes through the second spectrum shifting grating 1404, the second spectrum shifting and holding prism 1403, and the input route again, The first spectrum shifting Porro prism 1402 transmits, the light pulse returns to the first spectrum shifting grating 1401 after multiple reflection, the light pulse output by the first spectrum shifting grating 1401 passes through the narrow band semiconductor laser diode 1406, the preamplifier 1407, the spectrum shifting acousto-optic modulator 1408, the spectrum shifting electro-optic modulator 1409, the spectrum shifting coupler 1410, the three-stage fiber amplifier 1411, the spectrum shifting isolator 1412 and the spectrum shifting collimator 1413, and then is incident on the first spectrum shifting reflector 1414, the first spectrum shifting reflector 1414 reflects the light pulse to the first spectrum shifting half-wave plate 1415, the first spectrum shifting half-wave plate 1415 transmits the light pulse to the first spectrum shifting polarizing beam splitter 1416, the first spectrum shifting beam splitter 1416 transmits the light pulse to the second spectrum shifting half-wave plate 1417, the light pulse passes through the second spectrum shifting half-wave plate 1417 and is incident on the second spectrum shifting reflector 1418, the second spectrum shifting reflector 1418 reflects the light pulse to the electro-optic switch 1419, the light pulse passes through an electro-optical switch 1419, a second spectrum shifting polarization beam splitter 1420, a lens coupler 1421, Nd: after the YAG crystal 1422, the spectrum shifting convex lens 1423, and the LBO crystal 1424, the YAG crystal is incident on the third spectrum shifting mirror 1425, the third spectrum shifting mirror 1425 reflects the light pulse to the fourth spectrum shifting mirror 1426, and the output of the fourth spectrum shifting mirror 1426 is the output of the spectrum shifting module 14.
Has the advantages that:
1. according to the invention, the spectrum moving module compresses the optical pulse, so that the pulse width is effectively compressed, and meanwhile, the spectrum center wavelength is moved, so that the obtained blue-green optical pulse can be used for processing nonferrous metals.
2. The invention utilizes the preprocessing module to improve the energy of the light pulse and compress the width of the light pulse spectrum, thereby effectively preventing the amplified light pulse from damaging the optical device.
3. Under the condition of limited pumping power, the invention utilizes the acousto-optic modulator to reduce the repetition frequency of the optical pulse, so that the optical pulse can obtain higher energy.
Description of the drawings:
fig. 1 is a block diagram of the overall architecture of the present invention.
Fig. 2 is a feedback loop used by the present invention.
FIG. 3 is a pre-processing module used with the present invention.
Fig. 4 is a spectral shaping module for use with the present invention.
Fig. 5 is a fiber amplification module for use with the present invention.
FIG. 6 is a spectrum shifting module for use with the present invention.
Detailed Description
The operation principle of the present invention is further explained with reference to the drawings, and it should be understood that the component parameters marked in the drawings are the preferred parameters used in the following embodiments, and do not limit the protection scope.
EXAMPLE 1 Overall Structure of the invention
As shown in FIG. 1, the overall structure of the present invention is such that a pump source 1 (LC 962U model manufactured by OCLARO, center wavelength 980nm, maximum single-mode output optical power 750mW) is connected to the 980nm end of a wavelength division multiplexer 2(COMCORE, 980/1060nm single-mode optical fiber wavelength division multiplexer), the 1550nm end of the wavelength division multiplexer 2 is connected to the input end of an optical coupler 3 (a fiber coupler manufactured by OZ-OPTICS, model number FUSED-12-1060-7/125-50/50-3U-3 mm), the output end of the optical coupler 3 is connected to one end of a saturable absorber 4 (SA-1064-25-2 ps-FC/PC saturable absorber manufactured by BATOP, Germany), the other end of the saturable absorber 4 is connected to the input end of a polarization sensitive isolator 5 (polarization sensitive isolator 714, Conoptics), the output end of the polarization sensitive isolator 5 is connected with the input end of an electric control polarization controller 6 (MPC-201 polarization sensitive isolator of General Photonics company), the output end of the electric control polarization controller 6 is connected with the input end of an optical fiber polarization beam splitter 7 (QTFBC-1216 optical fiber polarization beam splitter of Kongtum company), and the output end of the optical fiber polarization beam splitter 7 is connected with the public end of the optical wavelength division multiplexer 2 through an ytterbium-doped optical fiber 8 (PM-YDF-HI ytterbium-doped optical fiber of Nufern company). The structure forms a traditional mode-locking fiber laser resonant cavity.
The invention is based on the traditional mode-locked Fiber laser resonant cavity, and also comprises a pulse optimization system consisting of a feedback loop, a preprocessing module, a spectrum shaping module, a Fiber amplifying module and a spectrum moving module, and the structure is that the other output end of a Fiber polarization beam splitter 7 is connected with the input end of the feedback loop 9, one output end of the feedback loop 9 is connected with the other input end of an electric control polarization controller 6, the other output end of the feedback loop 9 is connected with an acousto-optic modulator 1116 (Fiber-Q acousto-optic modulator) in the preprocessing module 11, the other output end of an optical coupler 3 is connected with the input end of a collimator 10(WT & T company M011 collimator), the output end of the collimator 10 is connected with one end of the preprocessing module 11, the other end of the preprocessing module 11 is connected with the input end of the spectrum shaping module 12, the output end of the spectrum shaping module 12 is connected with one end of the Fiber amplifying module 13, the other end of the optical fiber amplification module 13 is connected to the spectrum shifting module 14.
EXAMPLE 2 feedback Loop
The feedback loop 9 is configured such that an input end of a photodetector 901 (RX 25BF available from Thorlabs) is used as an input end of the feedback loop 9, and is connected to the optical fiber polarization beam splitter 7, an output end of the photodetector 901 is connected to an input end of an amplifier 902 (SOA 1080-20-HI-40dB amplifier available from Innolume), one output end of the amplifier 902 is connected to one input end of an MCU906(STMicroelectronics STM32MP157FAC1MCU) through a filter 903 (CW 4L2 filter available from yunsandda), another output end of the amplifier 902 is connected to another input end of the MCU906 through a frequency divider 905 (MPY frequency divider 634 available from Texas Instruments), the MCU906 is used as an output end of the feedback loop 9, one output end is connected to another input end of the electrically controlled polarization controller 6, and another output end is connected to the acousto-optic modulator 1116 in the pre-processing module 11, and controlling the acousto-optic modulator to work.
Example 3 Pre-processing Module
The preprocessing module 11 has a light path structure that light pulses pass through a first preprocessing isolator 1101, a first preprocessing half-wave plate 1102 (Hengyang optical WPZ2310-248 half-wave plate), a first preprocessing convex lens 1103 (Hengyang optical GLH12-002- 13 concave mirror), the pre-treatment concave mirror 1109 reflects the light pulse back to the pre-treatment convex mirror 1108, the pre-treatment convex mirror 1108 transmits the light pulse to the pre-treatment concave mirror 1109 again, the pre-treatment concave mirror 1109 reflects the light pulse back to the pre-treatment convex mirror 1108, the pre-treatment convex mirror 1108 transmits the light pulse to the pre-treatment grating 1107, the pre-treatment grating 1107 transmits the light pulse to the second pre-treatment mirror 1110 (BK-7 mirror), the second pre-treatment mirror 1110 reflects the light pulse back to the pre-treatment grating 1107, the light pulse after passing through the pre-treatment grating 1107 is transmitted through the pre-treatment convex mirror 1108 and the pre-treatment concave mirror 1109 again according to the route described above, the light pulse after multiple reflections returns to the pre-treatment grating 1107, the pre-treatment grating 1107 reflects the light pulse to the third pre-treatment mirror 1111 (GMH 12-005-AU mirror), the third pre-treatment reflector 1111 transmits the light pulse to the second pre-treatment collimator 1112(WT & T company M011 collimator), and the light pulse passes through the second pre-treatment collimator 1112, the second pre-treatment concave lens 1113 (Hengyang optical company GLH16-8x4-004-NIR concave lens), the second pre-treatment convex lens 1114 (Hengyang optical company GLH 12-002-NIR convex lens), the third pre-treatment convex lens 1115 (Hengyang optical company GLH 12-002-NIR convex lens), the acousto-optic modulator 1116, the fourth pre-treatment convex lens 1117 (Hengyang optical company GLH 12-002-convex lens), the second pre-treatment isolator 1118 (Hengyang optical company HOI-005-NIR 532), the second pre-treatment half-wave plate 1119 (Hengyang optical company WPZ2310-248 half-wave plate), the fifth pre-treatment convex lens 1111120 (Hengyang optical company GLH 12-002-NIR convex lens), the NIR half-wave plate 1119, the constant ocean optical lens, After a third pre-processing collimator 1121(WT & T company M011 collimator), a pre-processing ytterbium-doped fiber 1122(Nufern company PM-YDF-HI fiber), a fourth pre-processing collimator 1123(WT & T company M011 collimator), and a sixth pre-processing convex lens 1124 (Hengyang optical company GLH 12-002-NIR convex lens), the pre-processing ytterbium-doped fiber is incident on a fourth pre-processing reflector 1125 (Hengyang optical GMH12-005-AU), a pump light generated by a pre-processing photodiode 1128(DILAS company D4F2P22-976) is incident on a fourth pre-processing reflector 1127(WT & T company M011 collimator 1125), a seventh pre-processing convex lens 1126 (Hengyang optical company GLH 12-002-NIR convex lens), and is incident on a fourth pre-processing reflector 12-005-AU reflector, and is fused with a light pulse of the previous fourth pre-processing reflector, the fused light pulse is reflected by the fourth pretreatment mirror 1125 to the fifth pretreatment mirror 1129 (Hengyang optical Co., Ltd., GMH12-005-AU mirror), reflected by the fifth pretreatment mirror 1129 to the third pretreatment half-wave plate 1130 (Hengyang optical Co., Ltd., WPZ2310-248 half-wave plate), and finally outputted by the pretreatment quarter-wave plate 1131 (Hengyang optical Co., Ltd., WPZ4310-248 quarter-wave plate) as a light pulse passing through the third pretreatment half-wave plate 1130. The preprocessing module 11 compresses the spectral width of the pulse, reduces the pulse repetition frequency, effectively prevents the amplified pulse from damaging the device, and improves the pulse energy.
Example 4 spectral shaping Module
The spectrum shaping module 12 has an optical path structure in which light pulses are incident on a first spectrum shaping mirror 1202 via a polarizer 1201(FiberPro PC1100), reflected by the first spectrum shaping mirror 1202 (Hengyang optics GMH12-005-AU mirror) to a spectrum shaping filter 1203(Bonphot electronics WLTF-BA filter), reflected by a second spectrum shaping mirror 1204 (Hengyang optics GMH12-005-AU mirror) and a third spectrum shaping mirror 1205 (Hengyang optics GMH12-005-AU mirror) to be reflected again to the spectrum shaping filter 1203, reflected by a fourth spectrum shaping mirror 1206 (Hengyang optics GMH12-005-AU mirror) to a fifth spectrum shaping mirror 1207 (Hengyang optics GMH12-005-AU mirror), the fifth spectral reflector 1207 reflects the light pulse to the first spectral shaping grating 1210 (LightSmythh LSFSG-1000-3225-94), the first spectral shaping grating 1210 reflects the light pulse to the sixth spectral shaping grating 1209 (Hengyo GMH12-005-AU mirror) and then to the first spectral shaping concave mirror 1208 (Hengyo GMH-13 concave mirror), the light pulse passes through the first spectral shaping concave mirror 1208 and the spatial light modulator 1211(CRI SLM-256-NIR spatial light modulator) and then is transmitted to the second spectral shaping concave mirror 1213 (Hengyo GMH-13 concave mirror), the second spectral shaping concave mirror 1213 reflects the light pulse to the eighth spectral shaping mirror 1214 (Hengyo GMH12-005-AU mirror) and then is reflected by the eighth spectral shaping mirror 1214 to the second spectral shaping grating 1215(LightSmyth LSG-1000 FSG-3225-94) And then reflected to a seventh spectrum shaping mirror 1212 (a galvano optics GMH12-005-AU mirror), and the output of the seventh spectrum shaping mirror 1212 is the output of the spectrum shaping module 12. The spectral shaping module 12 reduces spectral components around the gain bandwidth to compensate for the dispersion of the output pulses.
EXAMPLE 5 fiber amplification Module
The optical fiber amplification module 13 has an optical path structure that a light pulse passes through a first optical fiber amplification collimator 1301 (a collimator M011 of WT & T), an optical fiber amplification photonic crystal fiber 1302 (a photonic crystal fiber DC-200-40-PZ-Yb photonic crystal fiber of LUSTER), and a second optical fiber amplification collimator 1303 (a collimator M011 of WT & T), and then enters a first optical fiber amplification mirror 1304 (a mirror GMH12-005-AU of galvano optics), and a pump light generated by a first optical fiber amplification photodiode 1307 (a photodiode D4F2P22-976 of DILAS D4F2P22-976) enters the first optical fiber amplification mirror 1304 after passing through a third optical fiber amplification collimator 1306 (a collimator M011 of WT & T), and a second optical fiber amplification mirror 1305 (a mirror GMH12-005-AU of galvano optics), and then is merged with the light pulse previously entering the first optical fiber amplification mirror 1304, the fused light pulse sequentially passes through a first fiber amplification quarter wave plate 1308 (WPZ 4310-248 quarter wave plate manufactured by Hexagon optics), a first fiber amplification half wave plate 1309 (WPZ 2310-248 half wave plate manufactured by Hexagon), a fiber amplification isolator 1310 (HOI-005-532 isolator manufactured by Hexagon optics), a second fiber amplification half wave plate 1311 (WPZ 2310-248 half wave plate manufactured by Hexagon), a fiber amplification polarization beam splitter 1312 (QTC-1216 fiber polarization beam splitter manufactured by Kongtum), a third fiber amplification half wave plate 1313 (WPZ 2310-248 half wave plate manufactured by Hexagon), a fourth fiber amplification collimator 1314(WT & T M011 collimator), a fourth fiber amplification half wave plate 1315 (WPZ 2310-248 half wave plate manufactured by Hexagon), a first NIR amplification convex lens 1316 (GLH 12-002 lens manufactured by Hexagon), A fifth optical fiber amplification collimator 1317(WT & T company M011 collimator), an ytterbium-doped rod type optical fiber 1318 (Wuhan Long-march laser technology Limited 30/600 double-clad ytterbium-doped optical fiber), a sixth optical fiber amplification collimator 1319(WT & T company M011 collimator), a second optical fiber amplification convex lens 1320 (Hengyang optical company GLH12-002-, the fused light pulse is reflected by the third fiber amplifier mirror 1321 to the fourth fiber amplifier mirror 1325 (GMH 12-005-AU mirror, zeng optics), reflected by the fourth fiber amplifier mirror 1325 to the fifth fiber amplifier half-wave plate 1326 (WPZ 2310-248, zeng optics), and finally output by the second fiber amplifier quarter-wave plate 1327 (WPZ 4310-248, zeng optics). The fiber amplification module 13 power-amplifies the pulses.
Example 6 Spectrum Shifting Module
The spectrum shifting module 14 has an optical path structure that a first spectrum shifting grating 1401 (LSFSG-1000- Paul prism), the optical pulse is transmitted through the third spectrum shift Paul prism 1405 and then through the second spectrum shift grating 1404, the second spectrum shift Paul prism 1403 and the first spectrum shift Paul prism 1402 again according to the input route, the optical pulse after multiple reflections returns to the first spectrum shift grating 1401, the optical pulse output by the first spectrum shift grating 1401 is transmitted through the narrow band semiconductor laser diode 1406(Omicron-laser modulator GmbH CWA.L.NB 760nm-1060nm narrow band semiconductor laser diode), the preamplifier 1407 (E3X-NA 11 amplifier, Kyowa Pont positron limited technology company), the spectrum shift acousto-optic modulator 1408(Gooch & Housego Fiber-Q modulator), the spectrum shift electro-optic modulator 1409 (PM 1064-1 electro-optic modulator, Beijing Populus electro-optical technology Limited), the spectrum shift coupler 1410 (model number of OZ-OPTICS is SED-12-7/125-50/50-1 electro-optic modulator, produced by Oz-OPTICS Inc) 3U-3mm fiber coupler), a third-stage fiber amplifier 1411 (Shenzhen, Tianyu electronics, Inc. E3C-JC4P amplifier), a spectrum shifting isolator 1412 (Hengyang optics, HOI-005-, the light pulse is incident on a second spectrum shifting mirror 1418 (GMH 12-005-AU mirror, constant ocean optics) through a second spectrum shifting half-wave plate 1417, the second spectrum shifting mirror 1418 reflects the light pulse to an electro-optical switch 1419 (QBD-6024-DN electro-optical switch, Qingdao Haitai electro-optical technology ltd), the light pulse passes through the electro-optical switch 1419, a second spectrum shifting polarization beam splitter 1420 (QTFBC-1216 fiber polarization beam splitter, Kongtum), a lens coupler 1421 (J-LASFH 17 coupler, dry optical elements ltd, danyang): YAG crystal 1422 (Kyoto crystal nine technologies, Inc. Nd: YAG crystal), spectrum shifting convex lens 1423 (Hengyang optical GLH 12-002-NIR convex lens), LBO crystal 1424 (Shandong crystal photoelectricity, Inc. LBO crystal), then incident on the third spectrum shifting reflector 1425 (Hengyang optical Co., GMH12-005-AU reflector), the third spectrum shifting reflector 1425 reflects the light pulse to the fourth spectrum shifting reflector 1426 (Hengyang optical Co., GMH12-005-AU reflector), the output of the fourth spectrum shifting reflector 1426 is the output of the spectrum shifting module 14. The spectrum shifting module 14 shortens the pulse width and realizes the shift of the center wavelength of the spectrum.
Example 7 working principle of the invention
The working principle of the present invention will be described with reference to the above embodiments and the accompanying drawings.
The traditional mode-locked fiber laser resonant cavity generates optical pulses, the width of optical pulse spectrum is compressed by the preprocessing module 11, and the optical pulse energy is improved. After the pretreatment grating 1107, the pretreatment convex mirror 1108, the pretreatment concave mirror 1109 and the second pretreatment reflecting mirror 1110 are combined, the spectral width can be compressed, and amplified light pulses are prevented from damaging optical devices. Under limited pump power conditions, the acousto-optic modulator 1116 may reduce the optical pulse repetition rate so that the optical pulses gain higher energy in the next structure. Preconditioning the ytterbium-doped fiber 1122 increases the energy of the optical pulse. When the energy of the optical pulse is increased, a gain narrowing effect is generated, and the width of the optical pulse is limited. Is composed of 57 alternate Al2O3、SiO2The spectral shaping filter 1203, which is composed of layers and a fused silica substrate, compensates for this effect, reducing the spectral components near the gain bandwidth. The first spectral shaping grating 1210, the second spectral shaping grating 1215, the first spectral shaping concave mirror 1208, the second spectral shaping concave mirror 1213 and the spatial light modulator 1211 constitute a dispersion compensation structure for compensating for dispersion of the optical pulse. After the dispersion compensation, the optical fiber amplification module 13 performs power amplification on the optical pulse to obtain a high-power optical pulse. The spectrum shifting module 14 realizes frequency conversion of the light pulse wavelength and finally outputs a high-power ultrashort blue-green light pulse.
Claims (1)
1. An ultrashort pulse source for processing nonferrous metals has the structure that a pumping source (1) is connected with the 980nm end of a wavelength division multiplexer (2), the 1550nm end of the wavelength division multiplexer (2) is connected with the input end of an optical coupler (3), the output end of the optical coupler (3) is connected with one end of a saturable absorber (4), the other end of the saturable absorber (4) is connected with the input end of a polarization sensitive isolator (5), the output end of the polarization sensitive isolator (5) is connected with the input end of an electric control polarization controller (6), the output end of the electric control polarization controller (6) is connected with the input end of an optical fiber polarization beam splitter (7), and the output end of the optical fiber polarization beam splitter (7) is connected with the common end of the wavelength division multiplexer (2) through an ytterbium-doped optical fiber (8);
the device is characterized in that the structure is also provided, another output end of the optical fiber polarization beam splitter (7) is connected with an input end of a feedback loop (9), one output end of the feedback loop (9) is connected with another input end of the electric control polarization controller (6), another output end of the feedback loop (9) is connected with an acousto-optic modulator (1116) in a preprocessing module (11), another output end of the optical coupler (3) is connected with an input end of a collimator (10), an output end of the collimator (10) is connected with one end of the preprocessing module (11), another end of the preprocessing module (11) is connected with an input end of a spectrum shaping module (12), an output end of the spectrum shaping module (12) is connected with one end of an optical fiber amplifying module (13), and another end of the optical fiber amplifying module (13) is connected with a spectrum shifting module (14);
the feedback loop (9) is structured in such a way that the input end of a photoelectric detector (901) is used as the input end of the feedback loop (9) and is connected with the optical fiber polarization beam splitter (7), the output end of the photoelectric detector (901) is connected with the input end of an amplifier (902), one output end of the amplifier (902) is connected with one input end of an MCU (906) through a filter (903) and an A/D converter (904), the other output end of the amplifier (902) is connected with the other input end of the MCU (906) through a frequency divider (905), the MCU (906) is used as the output end of the feedback loop (9), one output end is connected with the other input end of the electrically-controlled polarization controller (6), and the other output end is connected with an acousto-optic modulator (1116) in the preprocessing module (11) to control the acousto-optic modulator to work;
the pre-processing module (11) is provided with a light path structure, light pulses are incident into a first collimator (1105) of the pre-processing module after passing through a first isolator (1101) of the pre-processing module, a first half wave plate (1102) of the pre-processing module, a first convex lens (1103) of the pre-processing module and a first concave lens (1104) of the pre-processing module, the first collimator (1105) of the pre-processing module irradiates the light pulses onto a first reflecting mirror (1106) of the pre-processing module, the first reflecting mirror (1106) of the pre-processing module reflects the light pulses onto a grating (1107) of the pre-processing module, the light pulses output by the pre-processing simulated grating (1107) are transmitted to a concave mirror (1109) of the pre-processing module through a convex mirror (1108) of the pre-processing module, the light pulses (1109) of the pre-processing module reflect back to the convex mirror (1108) of the pre-processing module, and the convex mirror (1108) of the pre-processing module transmits the light pulses to the concave mirror (1109) of the pre-processing module again, the concave mirror (1109) of the pretreatment module reflects the light pulse back to the convex mirror (1108) of the pretreatment module, the convex mirror (1108) of the pretreatment module transmits the light pulse to the grating (1107) of the pretreatment module, the grating (1107) of the pretreatment module transmits the light pulse to the second mirror (1110) of the pretreatment module, the second mirror (1110) of the pretreatment module reflects the light pulse back to the grating (1107) of the pretreatment module, the light pulse passes through the grating (1107) of the pretreatment module and then is transmitted through the convex mirror (1108) of the pretreatment module and the concave mirror (1109) of the pretreatment module again according to the route, the light pulse returns to the grating (1107) of the pretreatment module after multiple reflection, the grating (1107) of the pretreatment module reflects the light pulse to the third mirror (1111) of the pretreatment module, and the third mirror (1111) of the pretreatment module enables the light pulse to be incident to the second collimator (1112) of the pretreatment module, the optical pulse is incident on a fourth reflector (1125) of the pretreatment module after passing through a second collimator (1112) of the pretreatment module, a second concave lens (1113) of the pretreatment module, a second convex lens (1114) of the pretreatment module, a third convex lens (1115) of the pretreatment module, an acousto-optic modulator (1116), a fourth convex lens (1117) of the pretreatment module, a second isolator (1118) of the pretreatment module, a second half-wave plate (1119) of the pretreatment module, a fifth convex lens (1120) of the pretreatment module, a third collimator (1121) of the pretreatment module, ytterbium-doped fiber (1122) of the pretreatment module, a fourth collimator (1123) of the pretreatment module and a sixth convex lens (1124) of the pretreatment module, and the pumping light generated by a laser diode (1128) of the pretreatment module passes through a fifth collimator (1127) of the pretreatment module and a seventh convex lens (1126) of the pretreatment module, the light pulse is incident on a fourth reflector (1125) of the pretreatment module and is fused with the light pulse which is incident on the fourth reflector (1125) of the pretreatment module before, the fused light pulse is reflected to a fifth reflector (1129) of the pretreatment module through the fourth reflector (1125) of the pretreatment module, and is reflected to a third half-wave plate (1130) of the pretreatment module through the fifth reflector (1129) of the pretreatment module, and the light pulse which passes through the third half-wave plate (1130) of the pretreatment module is finally output by a quarter-wave plate (1131) of the pretreatment module;
the spectrum shaping module (12) is provided with an optical path structure, light pulse enters a first reflecting mirror (1202) of the spectrum shaping module through a polarizer (1201), the light pulse is reflected to a filter (1203) of the spectrum shaping module by the first reflecting mirror (1202) of the spectrum shaping module, the light pulse output by the filter (1203) of the spectrum shaping module is reflected to a second reflecting mirror (1204) of the spectrum shaping module and a third reflecting mirror (1205) of the spectrum shaping module and then reflected to the filter (1203) of the spectrum shaping module again, the light pulse output by the filter (1203) of the spectrum shaping module is reflected to a fifth reflecting mirror (1207) of the spectrum shaping module through a fourth reflecting mirror (1206) of the spectrum shaping module, the light pulse is reflected to a first grating (1210) of the spectrum shaping module by the fifth reflecting mirror (1207) of the spectrum shaping module, and the light pulse is reflected to a sixth reflecting mirror (1209) of the spectrum shaping module by the first grating (1210) of the spectrum shaping module and then reflected to the sixth reflecting mirror (1209) of the spectrum shaping module The optical pulse is transmitted to a second concave mirror (1213) of the spectrum shaping module after passing through the first concave mirror (1208) of the spectrum shaping module and a spatial light modulator (1211), the second concave mirror (1213) of the spectrum shaping module reflects the optical pulse to an eighth mirror (1214) of the spectrum shaping module, the optical pulse is reflected to a second grating (1215) of the spectrum shaping module by the eighth mirror (1214) of the spectrum shaping module and then reflected to a seventh mirror (1212) of the spectrum shaping module, and the output of the seventh mirror (1212) of the spectrum shaping module is the output of the spectrum shaping module (12);
the optical fiber amplification module (13) is provided with a light path structure, light pulses are incident to a first reflector (1304) of the optical fiber amplification module after passing through a first collimator (1301) of the optical fiber amplification module, a photonic crystal fiber (1302) of the optical fiber amplification module and a second collimator (1303) of the optical fiber amplification module, pumping light generated by a first laser diode (1307) of the optical fiber amplification module is incident to the first reflector (1304) of the optical fiber amplification module after passing through a third collimator (1306) of the optical fiber amplification module and a second reflector (1305) of the optical fiber amplification module, and is fused with the light pulses incident to the first reflector (1304) of the optical fiber amplification module before, and the fused light pulses sequentially pass through a first quarter wave plate (1308) of the optical fiber amplification module, a first half wave plate (1309) of the optical fiber amplification module, an isolator (1310) of the optical fiber amplification module, and a second reflector (1304) of the optical fiber amplification module, A second half wave plate (1311) of the fiber amplification module, a polarization beam splitter (1312) of the fiber amplification module, a third half wave plate (1313) of the fiber amplification module, a fourth collimator (1314) of the fiber amplification module, a fourth half wave plate (1315) of the fiber amplification module, a first convex lens (1316) of the fiber amplification module, a fifth collimator (1317) of the fiber amplification module, an ytterbium doped rod type fiber (1318), a sixth collimator (1319) of the fiber amplification module, and a second convex lens (1320) of the fiber amplification module, and then the pump light generated by a second laser diode (1324) of the fiber amplification module is incident on the third reflector (1321) of the fiber amplification module after passing through a seventh collimator (1323) of the fiber amplification module and a third convex lens (1322) of the fiber amplification module, and then is fused with the previous light incident on the third reflector (1321) of the fiber amplification module, the fused light pulse is reflected to a fourth reflector (1325) of the optical fiber amplification module through a third reflector (1321) of the optical fiber amplification module, is reflected to a fifth half-wave plate (1326) of the optical fiber amplification module through the fourth reflector (1325) of the optical fiber amplification module, and is finally output through a second quarter-wave plate (1327) of the optical fiber amplification module;
the spectrum shifting module (14) is provided with a light path structure, a first grating (1401) of the spectrum shifting module transmits incident light pulses to a second Porro prism (1403) of the spectrum shifting module through a first Porro prism (1402) of the spectrum shifting module, the second Porro prism (1403) of the spectrum shifting module reflects the light pulses back to the first Porro prism (1402) of the spectrum shifting module, the first Porro prism (1402) of the spectrum shifting module transmits the light pulses to the second Porro prism (1403) of the spectrum shifting module again, the second Porro prism (1403) of the spectrum shifting module reflects the light pulses back to the first Porro prism (1402) of the spectrum shifting module again, the first Porro prism (1402) of the spectrum shifting module transmits the light pulses to a second grating (1404) of the spectrum shifting module, and the second grating (1404) of the spectrum shifting module transmits the light pulses to a third Porro prism (1405) of the spectrum shifting module, the light pulse is transmitted through a third Porro prism (1405) of the spectrum shifting module, then through a second grating (1404) of the spectrum shifting module, a second Porro prism (1403) of the spectrum shifting module and a first Porro prism (1402) of the spectrum shifting module again according to an input route, the light pulse after multiple reflections returns to the first grating (1401) of the spectrum shifting module, the light pulse output by the first grating (1401) of the spectrum shifting module enters an electro-optic modulator (1409) of the spectrum shifting module, a coupler (1410) of the spectrum shifting module, a three-level fiber amplifier (1411), an isolator (1412) of the spectrum shifting module and a collimator (1413) of the spectrum shifting module after passing through a narrow-band semiconductor laser diode (1406), an acousto-optic modulator (1408) of the spectrum shifting module, an electro-optic modulator (1409) of the spectrum shifting module, a first reflector (1414) of the spectrum shifting module, and the first reflector (1414) of the spectrum shifting module reflects the light pulse to a first half of the spectrum shifting module 1415) The spectrum moves first half-wave plate (1415) of module and transmits light pulse to the first polarization beam splitter (1416) that the module was moved to the spectrum, the first polarization beam splitter (1416) that the module was moved to the spectrum transmits light pulse to second half-wave plate (1417) that the module was moved to the spectrum, light pulse moves the second half-wave plate (1417) of module through the spectrum and incides to the second mirror (1418) that the module was moved to the spectrum, the second mirror (1418) that the module was moved to the spectrum reflect light pulse to electro-optical switch (1419), light pulse moves the second polarization beam splitter (1420) that the module was moved to the spectrum through electro-optical switch (1419), lens coupler (1421), Nd: YAG crystal (1422), convex lens (1423) of the spectrum shifting module, LBO crystal (1424), then the light is incident on the third reflector (1425) of the spectrum shifting module, the third reflector (1425) of the spectrum shifting module reflects the light pulse to the fourth reflector (1426) of the spectrum shifting module, and the output of the fourth reflector (1426) of the spectrum shifting module is the output of the spectrum shifting module (14).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242025A (en) * | 2014-08-27 | 2014-12-24 | 中国空间技术研究院 | Self-similarity mode locking optical fiber femtosecond laser device based on spectrum compression and amplification |
| CN107785769A (en) * | 2017-09-27 | 2018-03-09 | 中国空间技术研究院 | A kind of low time jitter optical fiber femtosecond laser based on narrow-band spectrum filtering |
| CN110994341A (en) * | 2019-11-07 | 2020-04-10 | 广东工业大学 | Feedback enhanced polarization-maintaining erbium-doped fiber dual-wavelength random laser |
| CN112421353A (en) * | 2020-10-16 | 2021-02-26 | 中国科学院西安光学精密机械研究所 | Device for inhibiting gain narrowing and obtaining ultrashort pulse amplification output and adjusting method |
| CN113067239A (en) * | 2021-03-30 | 2021-07-02 | 四川大学 | Intermediate infrared femtosecond pulse laser |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7711013B2 (en) * | 2004-03-31 | 2010-05-04 | Imra America, Inc. | Modular fiber-based chirped pulse amplification system |
-
2021
- 2021-08-25 CN CN202110979241.5A patent/CN113690724B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242025A (en) * | 2014-08-27 | 2014-12-24 | 中国空间技术研究院 | Self-similarity mode locking optical fiber femtosecond laser device based on spectrum compression and amplification |
| CN107785769A (en) * | 2017-09-27 | 2018-03-09 | 中国空间技术研究院 | A kind of low time jitter optical fiber femtosecond laser based on narrow-band spectrum filtering |
| CN110994341A (en) * | 2019-11-07 | 2020-04-10 | 广东工业大学 | Feedback enhanced polarization-maintaining erbium-doped fiber dual-wavelength random laser |
| CN112421353A (en) * | 2020-10-16 | 2021-02-26 | 中国科学院西安光学精密机械研究所 | Device for inhibiting gain narrowing and obtaining ultrashort pulse amplification output and adjusting method |
| CN113067239A (en) * | 2021-03-30 | 2021-07-02 | 四川大学 | Intermediate infrared femtosecond pulse laser |
Non-Patent Citations (1)
| Title |
|---|
| 高重复频率超短激光脉冲产生及频率变换技术发展趋势;郑佳琪等;《中国激光》;20210630;第48卷(第12期);全文 * |
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