CN100571080C - Wavelength is the signal source device of 1053nm, high power, narrow linewidth - Google Patents
Wavelength is the signal source device of 1053nm, high power, narrow linewidth Download PDFInfo
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- CN100571080C CN100571080C CN 200610118003 CN200610118003A CN100571080C CN 100571080 C CN100571080 C CN 100571080C CN 200610118003 CN200610118003 CN 200610118003 CN 200610118003 A CN200610118003 A CN 200610118003A CN 100571080 C CN100571080 C CN 100571080C
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- pump combiner
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Abstract
A kind of wavelength is the signal source of 1053nm, high power, narrow linewidth, constitutes: the multiple die semiconductor laser that adopts the optical flat encapsulation is at pumping source, and adopting live width is 10
-4The single longitudinal mode Distributed Feedback Laser of the 1053nm of nm is made the weak signal seed light source, a pumping end welding mutually of the output of described multiple die semiconductor laser and multimode pump combiner, described Distributed Feedback Laser connects this multimode pump combiner signal end through a low-power isolator, the output tail optical fiber of this multimode pump combiner and the input welding of ytterbium-doped double-clad fiber amplifier, the output of this ytterbium-doped double-clad fiber amplifier are exported by 8 degree inclined-plane wire jumpers behind high-power fiber optic isolator.The present invention can be used as the signal source of narrow linewidth, high power, single longitudinal mode, high s/n ratio, good stability, and owing to be full fibre system, so be easy to encapsulation, affected by environment less.
Description
Technical field
The present invention relates to utilize the signal source of yb-doped double-clad fiber realization, particularly a kind of wavelength is the signal source of 1053nm, high power, narrow linewidth, its advantage is narrow linewidth, high power, high s/n ratio, single longitudinal mode, can be used as simultaneously to the signal source under the occasion of live width and power requirement strictness.
Background technology
The signal source module that utilizes optical fiber to realize has good beam quality, the efficient height, and advantages such as high stability, compact conformation have been widely used in fields such as communication, industry and medical science.Mix Yb
3+Silica fiber belongs to simple three level system structure, has wide absorption spectra, gain bandwidth and tuning range, and quantum efficiency height, characteristics such as no excited state absorption, no concentration quenching; And the special construction of doubly clad optical fiber, pump light can be propagated in the covering of heavy in section, large-numerical aperture, realizes the high power coupling and the absorption of pump light, thereby realizes effective amplification of weak seed light.These advantages make yb-doped double-clad fiber more and more cause people's extensive concern.
Although amplifying signal power is higher at present, reach as high as a watt magnitude, but it is also very wide with Time Bandwidth, several nm to tens nm, can not satisfy situation in the signal source that much field needs line width and single longitudinal mode characteristic are good, for example, in the process of integrated direction development, before entering the beam splitter array, need at first to realize that the laser amplifying signal output of narrow linewidth, high power, single longitudinal mode is as signal source in the front-end driven system of high power laser system.What most amplifier employing in the amplification process of realizing weak signal simultaneously was maximum is the structure of Lens Coupling flashlight and pump light, coupling is regulated difficult, and coupling efficiency is low, structural instability, affected by environment bigger, these drawbacks limit its application in many instances.
Summary of the invention
The technical problem to be solved in the present invention is to overcome above-mentioned the deficiencies in the prior art, and it is the signal source of 1053nm, high power, narrow linewidth that a kind of wavelength is provided, to realize the laser amplifying signal output of narrow linewidth, power height and good stability.
Technical solution of the present invention is as follows:
A kind of wavelength is the signal source of 1053nm, high power, narrow linewidth, constitutes: the multiple die semiconductor laser that adopts the optical flat encapsulation is at pumping source, and adopting live width is 10
-4The single longitudinal mode Distributed Feedback Laser of the 1053nm of nm is made the weak signal seed light source, a pumping end welding mutually of the output of described multiple die semiconductor laser and multimode pump combiner, described Distributed Feedback Laser connects this multimode pump combiner signal end through a low-power isolator, the output tail optical fiber of this multimode pump combiner and the input welding of ytterbium-doped double-clad fiber amplifier, the output of this ytterbium-doped double-clad fiber amplifier are exported by 8 degree inclined-plane wire jumpers behind high-power fiber optic isolator.
The coupling efficiency of the flashlight of described multimode pump combiner is 86%, and is 96% to the coupling efficiency of pump light.The splice loss, splice attenuation of the welding of described double-cladding fiber amplifier and the common single-mode tail fiber of high power isolator is below 1dB.
Technique effect of the present invention:
1, be 10 owing to the present invention adopts live width
-4The single longitudinal mode Distributed Feedback Laser of the 1053nm of nm is made the weak signal seed light source, so have the characteristics of narrow linewidth output;
2, adopt 8 degree inclined-plane outputs, to eliminate the Fresnel reflection of fiber end face;
3, particularly pumping source is the multiple die semiconductor laser that adopts dull and stereotyped encapsulation, maximum is output as 3 watts, adopt the coupled modes of multimode pump combiner again, the coupling efficiency of the flashlight of described multimode pump combiner is 86%, and is 96% to the coupling efficiency of pump light.The splice loss, splice attenuation of the welding of described double-cladding fiber amplifier and the common single-mode tail fiber of high power isolator is below 1dB, so apparatus of the present invention become the signal source that a kind of wavelength is 1053nm, high power, narrow linewidth;
4, owing to be full fibre system, encapsulation is easy to, and is affected by environment less.
Description of drawings
Fig. 1 is the overall structure schematic diagram of 1053nm high power of the present invention, narrow linewidth signal source embodiment.
Among the figure:
1-adopts the multiple die semiconductor laser of optical flat encapsulation (OFP); The multimode pump combiner of 2-(6+1) * 1 port; The 3-DFB laser; The 4-8m yb-doped double-clad fiber; The 5-2W high-power fiber optic isolator; 6-8 ° of inclined-plane wire jumper; 7-200mW low-power isolator;
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing, but should not limit protection scope of the present invention with this.
See also Fig. 1 earlier, Fig. 1 is the overall structure schematic diagram of 1053nm high power of the present invention, narrow linewidth signal source embodiment.As seen from the figure, wavelength of the present invention is the signal source of 1053nm, high power, narrow linewidth, and it constitutes: the multiple die semiconductor laser 1 that adopts the optical flat encapsulation is at pumping source, and adopting live width is 10
-4The 1053nm Distributed Feedback Laser 3 of nm is made the weak signal seed light source, a pumping end welding mutually of the output of described multiple die semiconductor laser 1 and multimode pump combiner 2, described Distributed Feedback Laser 3 connects this multimode pump combiner 2 signal ends through a low-power isolator 7, the output tail optical fiber of this multimode pump combiner 2 and the input welding of ytterbium-doped double-clad fiber amplifier 4, this ytterbium-doped double-clad fiber amplifier 4 are exported by 8 degree inclined-plane wire jumpers 6 behind high-power fiber optic isolator 5.
The coupling efficiency of 2 pairs of flashlights of described multimode pump combiner is 86%, and is 96% to the coupling efficiency of pump light, and the splice loss, splice attenuation of described double-cladding fiber amplifier 4 and the welding of high power isolator 5 common single-mode tail fibers is below 1dB.
On operating procedure, because the final luminous power of transmission in ytterbium-doped double-clad fiber amplifier 4 that realizes is higher, form self-oscillation easily, so should feed the weak signal seed light earlier, make the amplifier state that reaches capacity earlier, can be when not feeding pump light, check whether output has flashlight to export from fibre core, if flashlight output is arranged, then expression ytterbium-doped double-clad fiber amplifier 4 this moment is saturated, feeds pump light again.This operation has reduced the gain of ytterbium-doped double-clad fiber amplifier 4, but little in the not enough situation of amplifier isolation, is difficult for producing seed laser.This is because the increase of spontaneous radiation in the doubly clad optical fiber will be easy to produce seed laser, and experiment apparatus is damaged.
Experiment shows: input wavelength 915nm, and power 3W multimode pump light, seed light source Distributed Feedback Laser 3 output continuous signal optical linewidths are 10
-4Nm, power 8mW when not feeding pump light, can make ytterbium-doped double-clad fiber amplifier 4 reach capacity, and the amplification through the long double clad ytterbium doped optical fiber amplifier 4 of 8m obtains continuous single longitudinal mode laser output power signal 320mW, i.e. 25dBm, live width 10
-4Nm, signal to noise ratio 60dB, and stability is about 4%.
In the present structure, the signal laser power output only is subject to gain saturation, rather than nonlinear effect, therefore can further realize more high-power narrow linewidth signal output, the narrow linewidth that meets the demands, the more application of more occasions in high power signals source by the length and the raising pump power that increase yb-doped double-clad fiber.
Claims (2)
1, signal source device that wavelength is 1053nm high power, narrow linewidth is characterised in that its formation: adopt the multiple die semiconductor laser (1) of optical flat encapsulation to make pumping source, adopting live width is 10
-4Nm, wavelength are that the Distributed Feedback Laser (3) of 1053nm is made the weak signal light source, a pumping end welding mutually of the output of described multiple die semiconductor laser (1) and multimode pump combiner (2), described Distributed Feedback Laser (3) connects this multimode pump combiner (2) signal end through a low-power isolator (7), the input welding of the output tail optical fiber of this multimode pump combiner (2) and ytterbium-doped double-clad fiber amplifier (4), this ytterbium-doped double-clad fiber amplifier (4) are exported by 8 degree inclined-plane wire jumpers (6) behind high-power fiber optic isolator (5).
2, wavelength according to claim 1 is the signal source device of 1053nm high power, narrow linewidth, it is characterized in that described multimode pump combiner (2) is 86% to the coupling efficiency of flashlight, and be 96% to the coupling efficiency of pump light, the splice loss, splice attenuation of described double-cladding fiber amplifier (4) and the welding of the common single-mode tail fiber of high power isolator (5) is below 1dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610118003 CN100571080C (en) | 2006-11-06 | 2006-11-06 | Wavelength is the signal source device of 1053nm, high power, narrow linewidth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610118003 CN100571080C (en) | 2006-11-06 | 2006-11-06 | Wavelength is the signal source device of 1053nm, high power, narrow linewidth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1988422A CN1988422A (en) | 2007-06-27 |
| CN100571080C true CN100571080C (en) | 2009-12-16 |
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| CN 200610118003 Expired - Fee Related CN100571080C (en) | 2006-11-06 | 2006-11-06 | Wavelength is the signal source device of 1053nm, high power, narrow linewidth |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005697B (en) * | 2010-10-15 | 2012-10-10 | 北京大学 | Line cavity laser with super-narrow line width based on parallel feedback |
| CN102185240A (en) * | 2011-04-07 | 2011-09-14 | 中国科学院半导体研究所 | High-power low-noise single-frequency optical fiber laser |
| CN106961065A (en) * | 2017-03-24 | 2017-07-18 | 昂纳信息技术（深圳）有限公司 | Doped optical fibre amplifier and method of work |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247900Y (en) * | 1995-06-26 | 1997-02-19 | 清华大学 | Cascade fibre-optic amplifier with precoupling-isolating amplifying ring |
| CN1543024A (en) * | 2003-11-06 | 2004-11-03 | 中国科学院长春光学精密机械与物理研 | High power, narrow linewidth double-cladding fiber laser and making method |
| US20060158718A1 (en) * | 2002-05-03 | 2006-07-20 | Lightwaves 2020, Inc. | Erbium-Doped Fiber Amplifier and Integrated Module Components |
| US20060209394A1 (en) * | 2004-09-28 | 2006-09-21 | Sergueil Papernyi | Cascaded pump delivery for remotely pumped erbium-doped fiber amplifiers |
| CN200993716Y (en) * | 2006-11-06 | 2007-12-19 | 中国科学院上海光学精密机械研究所 | 1053nm high power narrow linewidth signal source |
-
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- 2006-11-06 CN CN 200610118003 patent/CN100571080C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247900Y (en) * | 1995-06-26 | 1997-02-19 | 清华大学 | Cascade fibre-optic amplifier with precoupling-isolating amplifying ring |
| US20060158718A1 (en) * | 2002-05-03 | 2006-07-20 | Lightwaves 2020, Inc. | Erbium-Doped Fiber Amplifier and Integrated Module Components |
| CN1543024A (en) * | 2003-11-06 | 2004-11-03 | 中国科学院长春光学精密机械与物理研 | High power, narrow linewidth double-cladding fiber laser and making method |
| US20060209394A1 (en) * | 2004-09-28 | 2006-09-21 | Sergueil Papernyi | Cascaded pump delivery for remotely pumped erbium-doped fiber amplifiers |
| CN200993716Y (en) * | 2006-11-06 | 2007-12-19 | 中国科学院上海光学精密机械研究所 | 1053nm high power narrow linewidth signal source |
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| CN1988422A (en) | 2007-06-27 |
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