CN201260023Y - High power pulse optical fiber laser - Google Patents
High power pulse optical fiber laser Download PDFInfo
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- CN201260023Y CN201260023Y CNU2008201464836U CN200820146483U CN201260023Y CN 201260023 Y CN201260023 Y CN 201260023Y CN U2008201464836 U CNU2008201464836 U CN U2008201464836U CN 200820146483 U CN200820146483 U CN 200820146483U CN 201260023 Y CN201260023 Y CN 201260023Y
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Abstract
The utility model relates to a high power optical fiber pulse laser, which mainly comprises a control circuit, and a pulse seed laser, a pump combiner, a high power isolator and a beam splitter which are sequentially connected through an optical path; wherein, the pulse seed laser mainly includes a 200ps-10ns pulse generator, a DFB laser and a ytterbium-doped fiber amplifier. The high power optical fiber pulse laser firstly in the world realize the pulse width with 200ps-10ns at 1550nm band and 1064nm band and the high-peak power output with 1kw-20kw; and the high power optical fiber pulse laser can be widely applied to the high-accuracy laser imaging radar, the high-accuracy optical fiber temperature sensing system; the high-accuracy optical fiber micro-vibration sensing system, the laser Doppler wind-detecting radar, the laser communication system, the scientific research and the like.
Description
Technical field
The utility model belongs to the laser technique field, relates to fiber laser, relates in particular to a kind of high power pulse fiber laser.
Background technology
Present international pulse optical fiber has two kinds, and a kind of is the fiber laser of acousto-optic Q modulation, and another is electric-optically Q-switched fiber laser.They are to produce laser pulse with acousto-optic Q modulation or electric-optically Q-switched mode, and pulse duration arrives the 200ns magnitude substantially more than 10ns, can not accomplish the pulse output of 200ps to 10ns; And output laser is accurate single mode, is not single-mode laser output completely.
Simultaneously, present high power pulse fiber laser is to produce the output of seed pulse power with acoustooptic modulation substantially, and pulse duration all is more than 40ns, can not accomplish less than 10ns level pulsed operation; Though psec and femto second optical fiber laser are also arranged, pulse duration but is a blank at 200ps to the pulse optical fiber of the pulse duration of this magnitude between the 10ns.
Summary of the invention
The utility model purpose is in order to solve the technological gap of existing pulse optical fiber, and provide a kind of pulse duration 200ps between the 10ns, pulse peak power reaches the short pulse fiber laser that can be used for high-precision optical fiber sensing and laser radar of 10KW.
The high power pulse fiber laser that proposes mainly comprises control circuit and the pulse seed laser that is connected by light path successively, pump combiner, high-power isolator, beam splitter for achieving the above object; The input of described pump combiner connects first pump laser; Described control circuit comprises pulsed triggering circuit, pump laser drive circuit, and described pump laser drive circuit is electrically connected first pump laser.Described pulse seed laser comprises Distributed Feedback Laser, isolator, wavelength division multiplexer, ytterbium doped optical fiber amplifier, filtering/isolation hybrid device, second pump laser, pulse generator; Described Distributed Feedback Laser, isolator, wavelength division multiplexer, ytterbium doped optical fiber amplifier, filtering/isolation hybrid device connect by light path successively; Described second pump laser connects described wavelength division multiplexer and pump laser drive circuit; Described pulse generator is a 200ps-10ns level pulse generator, connects described Distributed Feedback Laser and pulsed triggering circuit.
Described laser includes double-cladding fiber amplifier, and described double clad amplifier is between described pump combiner and high-power isolator.
Described laser also includes photodetector, and described photodetector two ends connect the output and the control circuit of described beam splitter respectively.Described control circuit comprises automatic temperature-adjusting control circuit, secondary temperature-control circuit, automatic optical power control circuit.
Described laser is provided with RS232/RS485 interface and RS232/RS485 interface control circuit.
High power pulse fiber laser of the present utility model has at first realized that at 1550nm wave band and 1064nm wave band the pulse duration of 200ps to 10ns and 1KW export to the high-peak power of 20KW in the world.Filled up the blank of fiber laser in this field.Can be widely used in the high-precision laser imaging radar, the high-precision optical fiber temperature-sensing system, the little vibration sensing system of high-precision optical fiber, the laser-Doppler windfinding radar, the laser communications system, and scientific research etc.
Description of drawings
Fig. 1 is the structure principle chart of the utility model high power pulse fiber laser;
Fig. 2 is the pulse seed laser structure schematic diagram of the utility model high power pulse fiber laser;
Fig. 3 is the bottom circuit module and the pump laser scheme of installation of the utility model high power pulse fiber laser;
Fig. 4 is the upper strata light path schematic diagram of the utility model high power pulse fiber laser.
Embodiment
As shown in Figures 1 to 4, high power pulse fiber laser of the present utility model mainly comprises pulse seed laser 1, pump combiner 2, double-cladding fiber amplifier 3, high-power isolator 4, beam splitter 5, photodetector 6, first pump laser 7, control circuit 8;
Wherein pulse seed laser 1, pump combiner 2, double-cladding fiber amplifier 3, high-power isolator 4, beam splitter 5 connect by light path successively; The input of pump combiner 2 connects first pump laser 7, and an output of beam splitter 5 connects photodetector 6; Control circuit 8 is electrically connected with output, the input of first pump laser 7, the pulse seed laser 1 of photodetector 6 respectively.
Wherein pulse seed laser 1 comprises Distributed Feedback Laser 11, isolator 12, wavelength division multiplexer 13, ytterbium doped optical fiber amplifier 14, filtering/isolation hybrid device 15, second pump laser 16, pulse generator 17; Pulse seed laser 1 comprises that Distributed Feedback Laser 11, isolator 12, wavelength division multiplexer 13, ytterbium doped optical fiber amplifier 14, filtering/isolation hybrid device 15 connect by light path successively; The input of pulse seed laser 11 connects pulse generator 17, and the input of wavelength division multiplexer 13 connects second pump laser 16.
Pump combiner 2 and beam splitter 5 the bests are selected high power pumping bundling device and high-power beam splitter for use, first pump laser, 7 preferred 975nm high-power pump lasers; Wavelength division multiplexer 13 is selected 980/1550 wavelength division multiplexer for use, and second pump laser 16 adopts the 980nm pump laser, and pulse generator 17 is a 200ps-10ns level pulse generator.
This laser also is provided with RS232/RS485 interface (not shown), corresponding, be provided with the RS232/RS485 interface control circuit in the control circuit 8 of laser.
The know-why that the optical fiber pulse seed of this laser produces is to utilize 200ps-10ns level pulse current Driven DF B semiconductor laser, because the frequency response speed of dfb semiconductor laser is very fast, produce the output of 200ps-10ns level pulse laser, the pulse laser of output is very faint, the consequently fiber amplifier of spontaneous emission noise (ASE) of adding first order structure optimization in the back amplifies, obtain the seed pulse optical-fiber laser output of watt level peak power, amplify by the secondary double-cladding fiber amplifier again, reach the pulsed optical fibre laser output of 10KW level.
The course of work:
This watt level pulse seed laser is through high power pumping bundling device 2,7 pumpings of first pump laser, amplify once more by double-cladding fiber amplifier 3, collimation output behind high-power isolator 4, high-power beam splitter 5, pulse laser after 6 pairs of secondaries of photodetector amplify is surveyed, and information feedback is arrived control circuit 8.
The automatic optical power control circuit of control circuit 8, automatic temperature-adjusting control circuit and secondary temperature-control circuit be to the feedback information analysis, the stable output and the thermal tuning of control impuls laser; Pulsed triggering circuit clamp-pulse generator 17 is to produce the pulsed drive current of 200ps to 10ns; The RS232/RS485 interface control circuit is by RS232 interface (not shown), make the user can monitor the running status of this fiber amplifier by instruction, comprise: product Electronic Serial Number, Mean Input Power, average output power, pumping source drive current, pumping source luminous power, pumping source temperature, pumping source temperature control voltage, inside modules temperature, and control and the operation of this fiber amplifier is set, comprising: the switch pumping source, the pumping source drive current is set.
The general technical index that this high power pulse fiber laser reaches is as follows:
1, operation wavelength 1550nmC wave band meets any wavelength of ITU-T international standard wavelength; And the 1064nm wave band, operation wavelength stability＜=1pm/ ℃;
2, pulse duration 200ps-10ns, pulse output power 1000W is to 20000W.
This high power pulse fiber laser has at first been realized the pulse duration output of 200ps to 10ns in the world at 1550nm wave band and 1064nm wave band; Realized the high-peak power output of 1KW to 20KW.
Application: pulse optical fiber can be widely used in the high-precision laser imaging radar, the high-precision optical fiber temperature-sensing system, and the little vibration sensing system of high-precision optical fiber, the laser-Doppler windfinding radar, the laser communications system, and scientific research etc.; The above distributed optical fiber temperature sensing system of present domestic 10Km (DTS) has been used the kind sub level pulse optical fiber of the 1550nm wave band of the present invention's generation at batch, thermometric range resolution ratio precision can reach 1 meter, has obtained the better effect than foreign same type DTS.
Claims (7)
1, a kind of high power pulse fiber laser is characterized in that: described laser mainly comprises control circuit and the pulse seed laser that is connected by light path successively, pump combiner, high-power isolator, beam splitter; The input of described pump combiner connects first pump laser; Described control circuit comprises pulsed triggering circuit, pump laser drive circuit, and described pump laser drive circuit is electrically connected first pump laser.
2, high power pulse fiber laser as claimed in claim 1 is characterized in that: described pulse seed laser comprises Distributed Feedback Laser, isolator, wavelength division multiplexer, ytterbium doped optical fiber amplifier, filtering/isolation hybrid device, second pump laser, pulse generator; Described Distributed Feedback Laser, isolator, wavelength division multiplexer, ytterbium doped optical fiber amplifier, filtering/isolation hybrid device connect by light path successively; Described second pump laser connects described wavelength division multiplexer and pump laser drive circuit; Described pulse generator is a 200ps-10ns level pulse generator, connects described Distributed Feedback Laser and pulsed triggering circuit.
3, high power pulse fiber laser as claimed in claim 1 or 2, it is characterized in that: described laser includes double-cladding fiber amplifier, and described double clad amplifier is between described pump combiner and high-power isolator.
4, high power pulse fiber laser as claimed in claim 1 or 2, it is characterized in that: described laser also includes photodetector, and described photodetector two ends connect the output and the control circuit of described beam splitter respectively.
5, high power pulse fiber laser as claimed in claim 4 is characterized in that: described control circuit comprises automatic temperature-adjusting control circuit and secondary temperature-control circuit.
6, high power pulse fiber laser as claimed in claim 4 is characterized in that: institute's control circuit also comprises automatic optical power control circuit.
7, high power pulse fiber laser as claimed in claim 1 or 2, it is characterized in that: described laser is provided with the RS232/RS485 interface, and described control circuit is provided with the RS232/RS485 interface control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201464836U CN201260023Y (en) | 2008-08-18 | 2008-08-18 | High power pulse optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201464836U CN201260023Y (en) | 2008-08-18 | 2008-08-18 | High power pulse optical fiber laser |
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| Publication Number | Publication Date |
|---|---|
| CN201260023Y true CN201260023Y (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201464836U Expired - Lifetime CN201260023Y (en) | 2008-08-18 | 2008-08-18 | High power pulse optical fiber laser |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847818A (en) * | 2010-04-02 | 2010-09-29 | 深圳朗光科技有限公司 | Cascading type fiber laser |
| CN101950913A (en) * | 2010-08-12 | 2011-01-19 | 上海拜安实业有限公司 | Fiber laser source based on pulse seed source amplification and fiber sensing system |
| CN102237633A (en) * | 2010-04-23 | 2011-11-09 | 上海华魏光纤传感技术有限公司 | High-power narrow-pulse laser light source |
| CN102361219A (en) * | 2011-08-10 | 2012-02-22 | 金海新源电气江苏有限公司 | Light source for distributed optical fiber temperature sensor |
| US20130208762A1 (en) * | 2012-02-14 | 2013-08-15 | Halliburton Energy Services Inc. | Suppression of Stimulated Raman Scattering |
| CN107863681A (en) * | 2017-11-23 | 2018-03-30 | 黑龙江工程学院 | A kind of four mirror ring resonator laser pulse width automatic compression methods |
| CN109002070A (en) * | 2018-09-12 | 2018-12-14 | 清华大学深圳研究生院 | A kind of temperature controlling box of grading control, control method and femtosecond frequency comb |
| CN111025261A (en) * | 2019-11-19 | 2020-04-17 | 深圳市大族光通科技有限公司 | Laser radar light source and laser radar system |
-
2008
- 2008-08-18 CN CNU2008201464836U patent/CN201260023Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847818A (en) * | 2010-04-02 | 2010-09-29 | 深圳朗光科技有限公司 | Cascading type fiber laser |
| CN102237633A (en) * | 2010-04-23 | 2011-11-09 | 上海华魏光纤传感技术有限公司 | High-power narrow-pulse laser light source |
| CN101950913A (en) * | 2010-08-12 | 2011-01-19 | 上海拜安实业有限公司 | Fiber laser source based on pulse seed source amplification and fiber sensing system |
| CN102361219A (en) * | 2011-08-10 | 2012-02-22 | 金海新源电气江苏有限公司 | Light source for distributed optical fiber temperature sensor |
| US20130208762A1 (en) * | 2012-02-14 | 2013-08-15 | Halliburton Energy Services Inc. | Suppression of Stimulated Raman Scattering |
| CN107863681A (en) * | 2017-11-23 | 2018-03-30 | 黑龙江工程学院 | A kind of four mirror ring resonator laser pulse width automatic compression methods |
| CN109002070A (en) * | 2018-09-12 | 2018-12-14 | 清华大学深圳研究生院 | A kind of temperature controlling box of grading control, control method and femtosecond frequency comb |
| CN109002070B (en) * | 2018-09-12 | 2024-02-23 | 清华大学深圳研究生院 | Hierarchical control temperature control box, hierarchical control method and femtosecond frequency comb |
| CN111025261A (en) * | 2019-11-19 | 2020-04-17 | 深圳市大族光通科技有限公司 | Laser radar light source and laser radar system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MINGSCHIN MAXPHOTONICS CO., LTD., SHENZHEN CITY Free format text: FORMER NAME: SHENZHEN MAXPHOTONICS TECHNOLOGY DEVELOPMENT CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 518000, Shenzhen, Guangdong, Baoan District manhole street, South Ring Road, and a third industrial zone, Ming Xin Industrial Park, second, third West Patentee after: SHENZHEN MAXPHOTONICS TECHNOLOGY DEV Co.,Ltd. Address before: 708, room 207, second industrial zone, Nanhai Avenue, Shenzhen, Guangdong, Nanshan District 518054, China Patentee before: Shenzhen Maxphotonics Technology Development Co.,Ltd. |
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| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000, Shenzhen, Guangdong, Baoan District manhole street, South Ring Road, and a third industrial zone, Ming Xin Industrial Park, second, third West Patentee after: Maxphotonics Co., Ltd. Address before: 518000, Shenzhen, Guangdong, Baoan District manhole street, South Ring Road, and a third industrial zone, Ming Xin Industrial Park, second, third West Patentee before: SHENZHEN MAXPHOTONICS TECHNOLOGY DEV Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 518103, Guangdong, Shenzhen, Baoan District manhole street and a community third industrial zone, Ming Xin Industrial Park, first, third, B Patentee after: MAXPHOTONICS Co.,Ltd. Address before: 518000, Shenzhen, Guangdong, Baoan District manhole street, South Ring Road, and a third industrial zone, Ming Xin Industrial Park, second, third West Patentee before: Maxphotonics Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090617 |