CN105762624A - Mid-infrared super-continuous spectrum light source capable of achieving flat wide spectrum - Google Patents
Mid-infrared super-continuous spectrum light source capable of achieving flat wide spectrum Download PDFInfo
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- CN105762624A CN105762624A CN201610308103.3A CN201610308103A CN105762624A CN 105762624 A CN105762624 A CN 105762624A CN 201610308103 A CN201610308103 A CN 201610308103A CN 105762624 A CN105762624 A CN 105762624A
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- light source
- doped fiber
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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
- H01S3/06716—Fibre compositions or doping with active elements
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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
- H01S3/06758—Tandem amplifiers
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
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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
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
- H01S3/1024—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping for pulse generation
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention discloses a mid-infrared super-continuous spectrum light source capable of outputting a flat wide spectrum.The mid-infrared super-continuous spectrum light source comprises a 1,550-nm tunable nanosecond pulse light source, a 975-nm continuous light source, a 793-nm continuous light source, a 1,550-nm optoisolator, a 1,550-nm or 975-nm wavelength division multiplexer, a beam combiner, an erbium-doped fiber, an erbium-ytterbium co-doped fiber, a thulium-holmium co-doped fiber, a thulium-doped fiber and a fluoride fiber which are sequentially connected.The mid-infrared super-continuous spectrum light source has the advantage that an output spectrum is made flat by adjusting the amplitude, frequency and envelope of an input pulse.
Description
Technical field
The present invention relates to laser optoelectronic field, the mid-infrared super continuum source that particularly a kind of wide range is smooth.
Background technology
In optical field, when pumping laser is through special fiber waveguide, a series of nonlinear effect causes the spectrum widening of incoming laser beam, and the wide spectral laser bundle of output claims super continuous spectrums laser.In recent years, the technical development of various novel super continuous spectrums lasing light emitters has made the hot fields of an optical research and has constantly been widely used in new field.At present, the fields such as super continuous laser source has applied to fluorescent microscopic imaging, flow cytometer, fluorescence lifetime imaging microscopy, FRET (fluorescence resonance energy transfer), optical coherence tomography, non-contact detecting, confocal microscopy bio-medical analysis, wide spectrum optical detection and laser radar, optic communication, gas sensing.Develop the mid-infrared super continuum source that wide range is smooth, meet scientific research and industrial growth requirement.
Current super continuum source is broadly divided into two classes: a class adopts all optical fibre structure to realize, and another kind of use electric tuning method realizes.The former uses all-fiber pulse laser as pump light source, and the latter uses electric pulse exciting laser diode to send pulse laser.The two is distinctive in that all optical fibre structure is more conducive to realize miniaturization, but is weaker than electric pulse mode in the stability and controllability of light pulse.
The method generally obtaining super continuous spectrums is; use nanosecond or the subnanosecond burst pulse of Gao Zhongying; pumping one section single-mould fiber; produce narrower super continuum light spectrum; it is amplified using erbium-doped fiber amplifier and thulium doped fiber amplifier; remove pumping fluoride, sulfide or Telluride fibers again, produce super continuous spectrums.
Summary of the invention
In order to obtain more smooth super continuum source, said method is made improvement by the present invention, propose the mid-infrared super continuum source that a kind of wide range is smooth, by adjusting the parameters such as the frequency of driving pulse, amplitude, shape, it is possible to adjust the broadening scope of super continuous spectrums of output, mean power and flatness.
The technical solution of the present invention is as follows:
The mid-infrared super continuum source that a kind of wide range is smooth includes the tunable nanosecond pulse light source 1 of 1550nm, 975nm continuous light source 1,975nm continuous light source 2 12,793nm continuous light source 13,1550nm optoisolator 2,1550/975nm wavelength division multiplexer the 3, first bundling device the 5, second bundling device 8, Er-doped fiber 4, erbium-ytterbium co-doped fiber 6, Tm Ho co doped fiber 7, thulium doped fiber 9, fluoride fiber 10, wherein:
Described 1550nm is tunable, and light-pulse generator 1 is connected with 1550nm optoisolator 2, 1550nm optoisolator 2 and 975nm continuous light source 1 connect two inputs of 1550/975nm wavelength division multiplexer 3 respectively, its output connects Er-doped fiber 4, Er-doped fiber 4 and 975nm continuous light source 2 12 connect two inputs of the first bundling device 5 respectively, the outfan of the first bundling device 5 connects erbium-ytterbium co-doped fiber 6, connect Tm Ho co doped fiber 7 again, Tm Ho co doped fiber 7 and 793nm continuous light source 13 connect two inputs of the second bundling device 8 respectively, the outfan of the second bundling device 8 connects thulium doped fiber 9 and fluoride fiber 10；It is welded together in the way of fibre core alignment between each parts.
Light-pulse generator that described 1550nm is tunable 1 is the tunable optical light-pulse generator of output pulse width 1-10ns, mean power 1-10mW, repetition rate 1-100MHz.
The first described bundling device 5 is (1+1) × 1 bundling device.
The second described bundling device 8 is (1+2) × 1 bundling device.
The invention has the advantages that makes output spectrum smooth by the adjustment amplitude of input pulse, frequency, envelope.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mid-infrared super continuum source that a kind of wide range of the present invention is smooth.
Fig. 2 is the pump light pulse schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is elaborated, but protection scope of the present invention is not limited to following embodiment.
Fig. 1 is the structural representation of the mid-infrared super continuum source that a kind of wide range of the present invention is smooth.In the present embodiment, 1550nm tunable nanosecond pulse light source 1 is the DFB laser diode of tunable electric pulse excitation, and mean power 0-10mW is adjustable in its output, and repetition rate 1-100MHz is adjustable, and pulsewidth 1-10ns is adjustable.1550nm optoisolator 2 is non-guarantor's polarisation isolator, and isolation is more than 40dB.1550/975nm wavelength division multiplexer 3,975nm continuous light source 1 and Er-doped fiber 4 constitute first order erbium-doped fiber amplifier, Er-doped fiber 4 is the M12 optical fiber of Thorlab company, long for 3.5m, it is 500mW that absorptance at 975nm place is about the peak power output of 13dB/m, 975nm continuous light source 1.First bundling device 5,975nm continuous light source 1 and erbium-ytterbium co-doped fiber 6 constitute second level amplifier, erbium-ytterbium co-doped fiber 6 is the DCF-EY-10/128 of Coractive company, long for 5.5m, absorptance at 975nm place is 2dB/m, 975nm continuous light source 1 peak power output is 8W, and the first bundling device 5 is (1+1) × 1 bundling device.Now can observe spectrum widening phenomenon.Tm Ho co doped fiber 7 is the TH512 of Coractive company, and length is 1m.Second bundling device 8,793nm continuous light source 13 and thulium doped fiber 9 constitute the third level and amplify, thulium doped fiber 9 is the DCF-TM-10/128 of Coractive company, length is 7m, 793nm continuous light source 13 peak power is 12W, and the second bundling device 8 is (2+1) × 1 bundling device.Finally accessing fluoride fiber 10, fluoride fiber 10 is the ZSF-9/125-N-0.20 of Coreactive company.
Fig. 2 is the output example of the tunable nanosecond pulse light source 1 of 1550nm, implementation relative to all optical fibre structure, the mode adopting electric pulse excitation can freely regulate the frequency of light-pulse generator, amplitude and pulsewidth, by regulating above parameter, it is possible to achieve the mid-infrared super continuum source that wide range is smooth.
Claims (4)
1. the mid-infrared super continuum source that a wide range is smooth, including the tunable nanosecond pulse light source (1) of 1550nm, 975nm continuous light source one (11), 975nm continuous light source two (12), 793nm continuous light source (13), 1550nm optoisolator (2), 1550/975nm wavelength division multiplexer (3), the first bundling device (5), the second bundling device (8), Er-doped fiber (4), erbium-ytterbium co-doped fiber (6), Tm Ho co doped fiber (7), thulium doped fiber (9), fluoride fiber (10), it is characterised in that:
nullLight-pulse generator that described 1550nm is tunable (1) is connected with 1550nm optoisolator (2)，1550nm optoisolator (2) and 975nm continuous light source one (11) connect two inputs of 1550/975nm wavelength division multiplexer (3) respectively，Its output connects Er-doped fiber (4)，Er-doped fiber (4) and 975nm continuous light source two (12) connect two inputs of the first bundling device (5) respectively，The outfan of the first bundling device (5) connects erbium-ytterbium co-doped fiber (6)，Connect Tm Ho co doped fiber (7) again，Tm Ho co doped fiber (7) and 793nm continuous light source (13) connect two inputs of the second bundling device (8) respectively，The outfan of the second bundling device (8) connects thulium doped fiber (9) and fluoride fiber (10)；It is welded together in the way of fibre core alignment between each parts.
2. the mid-infrared super continuum source that a kind of wide range according to claim 1 is smooth, it is characterized in that, light-pulse generator that 1550nm is tunable (1) is output wavelength 1550nm, output pulse width 1-10ns, the tunable optical light-pulse generator of mean power 1-10mW, repetition rate 1-100MHz.
3. the mid-infrared super continuum source that a kind of wide range according to claim 1 is smooth, it is characterised in that described the first bundling device (5) is (1+1) × 1 bundling device.
4. the mid-infrared super continuum source that a kind of wide range according to claim 1 is smooth, it is characterised in that described the second bundling device (8) is (1+2) × 1 bundling device.
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| CN201610308103.3A CN105762624A (en) | 2016-05-11 | 2016-05-11 | Mid-infrared super-continuous spectrum light source capable of achieving flat wide spectrum |
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| CN201610308103.3A CN105762624A (en) | 2016-05-11 | 2016-05-11 | Mid-infrared super-continuous spectrum light source capable of achieving flat wide spectrum |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115275748A (en) * | 2022-08-10 | 2022-11-01 | 北京工业大学 | Mid-infrared broad spectrum laser based on 2 mu m waveband picosecond laser pumping |
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| US20040032887A1 (en) * | 2001-12-17 | 2004-02-19 | Nima Ahmadvand | system and method for generating multi-wavelength laser source using highly nonlinear fiber |
| CN103296569A (en) * | 2013-06-25 | 2013-09-11 | 中国人民解放军国防科学技术大学 | Super-continuum spectrum light source based on dual-band seed source Er-Yb co-doped optical fiber amplifier |
| CN104849257A (en) * | 2015-06-02 | 2015-08-19 | 中国科学院上海技术物理研究所 | Small ultraviolet frequency sweeping laser-based resonance Raman spectrum detection system and method |
| CN205752961U (en) * | 2016-05-11 | 2016-11-30 | 中国科学院上海技术物理研究所 | The mid-infrared super continuum source that wide range is smooth |
-
2016
- 2016-05-11 CN CN201610308103.3A patent/CN105762624A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040032887A1 (en) * | 2001-12-17 | 2004-02-19 | Nima Ahmadvand | system and method for generating multi-wavelength laser source using highly nonlinear fiber |
| CN103296569A (en) * | 2013-06-25 | 2013-09-11 | 中国人民解放军国防科学技术大学 | Super-continuum spectrum light source based on dual-band seed source Er-Yb co-doped optical fiber amplifier |
| CN104849257A (en) * | 2015-06-02 | 2015-08-19 | 中国科学院上海技术物理研究所 | Small ultraviolet frequency sweeping laser-based resonance Raman spectrum detection system and method |
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| OJAS P. KULKARNI等: "Supercontinuum generation from ~1.9 to 4.5um in ZBLAN fiber with high average power generation beyond 3.8um using a thulium-doped fiber amplifier", 《J. OPT. SOC. AM. B》 * |
| XIONG WANG等: "Mid-infrared supercontinuum generated from a single-cladding Tm-Ho co-doped fiber", 《PROC. OF SPIE》 * |
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| CN115275748A (en) * | 2022-08-10 | 2022-11-01 | 北京工业大学 | Mid-infrared broad spectrum laser based on 2 mu m waveband picosecond laser pumping |
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