内置标准具光栅腔XeF(C-A)准分子激光器的线宽压缩
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摘要
为了避免阳光背景干扰,针对XeF(C-A)蓝绿激光水下应用需求开展了激光线宽压缩实验以提高信噪比。采用内置标准具的光栅谐振腔开展相关实验。利用光栅腔实现亚纳米级的激光线宽输出,然后在此基础上,通过插入标准具进行更精细的激光线宽压缩实验。利用光栅腔,采用1 200线/mm光栅并提高光栅辐照面积可以实现0.14nm的激光线宽输出。腔内插入反射率为50%的标准具,可以进一步将激光线宽压缩至39pm,激光单脉冲能量约为65mJ,脉冲宽度为1μs。实验结果表明:尽管XeF(C-A)蓝绿激光器的增益系数较低,但是通过优化光栅和标准具的工作参数,对谐振腔光学损耗进行合理的控制,激光器可以实现10pm量级的激光线宽输出。
In order to improve the signal-to-noise ratio for laser applications underwater,agrating resonator with an intra-cavity etalon was designed to compress the spectrum of XeF blue-green laser.First,agrating resonator was used to obtain a sub-nanometer laser linewidth,and then,a further spectral compression was performed by inserting an etalon into the grating resonator.The experimental results show that a linewidth of 0.14 nm can be obtained by using a 1 200 line/mm grating,and the linewidth can be further compressed to 39 pm by inserting an etalon,with a reflectivity of 50%,in the grating resonator.The final laser pulse energy is about 65 mJ and the pulse duration is 1μs.Although the gain coefficient of the XeF(C-A)laser is low,the optical loss of the resonator can be reasonably controlled by optimizing the working parameters of the grating and the etalon,thereby a 10 pm-level laser linewidth can be realized.
In order to improve the signal-to-noise ratio for laser applications underwater,agrating resonator with an intra-cavity etalon was designed to compress the spectrum of XeF blue-green laser.First,agrating resonator was used to obtain a sub-nanometer laser linewidth,and then,a further spectral compression was performed by inserting an etalon into the grating resonator.The experimental results show that a linewidth of 0.14 nm can be obtained by using a 1 200 line/mm grating,and the linewidth can be further compressed to 39 pm by inserting an etalon,with a reflectivity of 50%,in the grating resonator.The final laser pulse energy is about 65 mJ and the pulse duration is 1μs.Although the gain coefficient of the XeF(C-A)laser is low,the optical loss of the resonator can be reasonably controlled by optimizing the working parameters of the grating and the etalon,thereby a 10 pm-level laser linewidth can be realized.
引文
[1] DUNTLEY S Q.Light in the Sea[J].Journal of the Optical Society of America,1963,53(2):214-233.
[2] BOSOV N G.Room-temperature laser cathode-ray tube based on an ZnCdSe/ZnSe superlattice[J].Quantum Electronics,1995,25(8):756-758.
[3] CHILLA J L A,BUTTERWORTH S D,ZEITSCHEL A,et al..High power optically pumped semiconductor lasers[J].SPIE,2004,5332:143-150.
[4] DEYRA L,MARTIAL I,DIDIERJEAN J,et al..3W,300μJ,25ns pulsed 473nm blue laser based on actively Q-switched Nd∶YAG single-crystal fiber oscillator at 946nm[J].Optics Letters,2013,38(16):3013-3015.
[5] ZHENG Q,YAO Y,LI B,et al..13.2 Wlaserdiode-pumped Nd:YVO4/LBO blue laser at 457nm[J].Opt.Soc.Am.B,2009,26(6):1238-1242.
[6] RONG S K,ZHU X L,CHEN W B.All-solidstate narrow-linewidth 455nm blue laser based on Ti:sapphire crystal[J].Chinese Optics Letters,2009,7(1):43-45.
[7]鲁远甫,谢仕永,刘艳,等.高功率窄线宽微秒脉冲1064nm环形腔激光[J].光学精密工程,2016,24(10s):35-40.LU Y P,XIE SH Y,LIU Y,et al..High-power narrow linewidth microsecond pulse 1064nm ring lase[J].Opt.Precision Eng.,2016,24(10s):35-40.(in Chinese)
[8] SENTIS M L,TCHEREMISKINE V I,DELAPORTE P C.XeF(C-A)laser pumped by formedferrite open discharge radiation[J].Applied Physics Letters,1997,70(10):1198-1200.
[9] YU L,ZHU F,SHEN Y L,et al..A narrow linewidth and tunable XeF(C-A)laser[J].Laser Physics,2013,23(085006):1-4.
[10] KNECHT B A,FRASER R D,WHEELER D J,et al..Compact XeF(C-A)and iodine laser optically pumped by a surface discharge[J].Optics Letters,1995,20(9):1011-1013.
[11] YU L,MA L Y,YI A P,et al..An optically pumped XeF(C-A)laser with repetitive rate of 10Hz[J].Review of Scientific Instruments,2012,83(013107):1-4.
[12] YU L,LIU J R,MA L Y,et al..10Jenergy-level optically pumped XeF(C-A)laser with repetition mode[J].Optics Letters,2007,32(9):1087-1089.
[13]赵长明,黄杰.未来激光探潜和对潜通信技术的发展[J].光学技术,2001,27(1):53-56.ZHAO CH M,HUANG J.Development of lasersubmarine communication and detection technology in the future[J].Optical Technology,2001,27(1):53-56.(in Chinese)
[14]朱峰,沈炎龙,于力,等.棱镜色散腔XeF(C-A)蓝绿激光线宽压缩实验[J].强激光与粒子束,2013,25(2):1-4.ZHU F,SHEN Y L,YU L,et al..Spectral-narrowing of XeF(C-A)blue-green lasers using prism dispersive resonator[J].High Power Laser and Particle Beams,2013,25(2):1-4.(in Chinese)
[15]于力,朱峰,安晓霞,等.XeF激光光谱研究[J].光学学报,2010,30(3):808-812.YU L,ZHU F,AN X X,et al..Study on the spectrum of XeF laser[J].Acta Optica Sinica,2010,30(3):808-812.(in Chinese)
[2] BOSOV N G.Room-temperature laser cathode-ray tube based on an ZnCdSe/ZnSe superlattice[J].Quantum Electronics,1995,25(8):756-758.
[3] CHILLA J L A,BUTTERWORTH S D,ZEITSCHEL A,et al..High power optically pumped semiconductor lasers[J].SPIE,2004,5332:143-150.
[4] DEYRA L,MARTIAL I,DIDIERJEAN J,et al..3W,300μJ,25ns pulsed 473nm blue laser based on actively Q-switched Nd∶YAG single-crystal fiber oscillator at 946nm[J].Optics Letters,2013,38(16):3013-3015.
[5] ZHENG Q,YAO Y,LI B,et al..13.2 Wlaserdiode-pumped Nd:YVO4/LBO blue laser at 457nm[J].Opt.Soc.Am.B,2009,26(6):1238-1242.
[6] RONG S K,ZHU X L,CHEN W B.All-solidstate narrow-linewidth 455nm blue laser based on Ti:sapphire crystal[J].Chinese Optics Letters,2009,7(1):43-45.
[7]鲁远甫,谢仕永,刘艳,等.高功率窄线宽微秒脉冲1064nm环形腔激光[J].光学精密工程,2016,24(10s):35-40.LU Y P,XIE SH Y,LIU Y,et al..High-power narrow linewidth microsecond pulse 1064nm ring lase[J].Opt.Precision Eng.,2016,24(10s):35-40.(in Chinese)
[8] SENTIS M L,TCHEREMISKINE V I,DELAPORTE P C.XeF(C-A)laser pumped by formedferrite open discharge radiation[J].Applied Physics Letters,1997,70(10):1198-1200.
[9] YU L,ZHU F,SHEN Y L,et al..A narrow linewidth and tunable XeF(C-A)laser[J].Laser Physics,2013,23(085006):1-4.
[10] KNECHT B A,FRASER R D,WHEELER D J,et al..Compact XeF(C-A)and iodine laser optically pumped by a surface discharge[J].Optics Letters,1995,20(9):1011-1013.
[11] YU L,MA L Y,YI A P,et al..An optically pumped XeF(C-A)laser with repetitive rate of 10Hz[J].Review of Scientific Instruments,2012,83(013107):1-4.
[12] YU L,LIU J R,MA L Y,et al..10Jenergy-level optically pumped XeF(C-A)laser with repetition mode[J].Optics Letters,2007,32(9):1087-1089.
[13]赵长明,黄杰.未来激光探潜和对潜通信技术的发展[J].光学技术,2001,27(1):53-56.ZHAO CH M,HUANG J.Development of lasersubmarine communication and detection technology in the future[J].Optical Technology,2001,27(1):53-56.(in Chinese)
[14]朱峰,沈炎龙,于力,等.棱镜色散腔XeF(C-A)蓝绿激光线宽压缩实验[J].强激光与粒子束,2013,25(2):1-4.ZHU F,SHEN Y L,YU L,et al..Spectral-narrowing of XeF(C-A)blue-green lasers using prism dispersive resonator[J].High Power Laser and Particle Beams,2013,25(2):1-4.(in Chinese)
[15]于力,朱峰,安晓霞,等.XeF激光光谱研究[J].光学学报,2010,30(3):808-812.YU L,ZHU F,AN X X,et al..Study on the spectrum of XeF laser[J].Acta Optica Sinica,2010,30(3):808-812.(in Chinese)