Nd∶YAG平面波导1319nm激光放大研究
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摘要
报道了一种波长为1319nm的准连续Nd∶YAG平面波导激光放大器。种子源为基于侧面抽运棒状Nd∶YAG激光头的振荡器,放大器的激光增益介质为平面波导结构Nd∶YAG。YAG平面波导的尺寸大小为0.6mm×10mm×60mm,中心区域0.1mm×10mm×50mm为掺杂区,周围均为非掺杂YAG。放大器的抽运源为半导体激光器阵列,抽运光经过耦合后从后端面进入平面波导材料,种子光从前端进入单通放大输出。Nd∶YAG平面波导与两个微通道热沉焊接起来实现良好的散热,端面镀1319、1064和808nm高透膜层。当抽运电流为110A、重复频率为200Hz时,获得了功率为36mJ的1319nm激光输出,放大光光效率为8.3%。
A quasi continuous wave Nd∶YAG planar waveguide laser amplifier with a wavelength of 1319 nm is reported.The seed source is an oscillator based on a side-pumped rod Nd:YAG laser model,and the gain medium of the amplifier is a planar waveguide Nd∶YAG.The size of the YAG planar waveguide is 0.6 mm×10 mm×60 mm,the central area 0.1 mm×10 mm×50 mm is the doped region,and the surrounding area is undoped YAG.The pump source of the amplifier is a diode laser array,which is coupled from the rear end into the planar waveguide gain medium.The seed laser is coupled into the gain medium via the end facet,and a single-pass amplification is introduced.In order to achieve the good heat dissipation,two micro channel heat sinks are welded onto the Nd∶YAG planar waveguide.The end facets are coated high transmission at 1319,1064 and 808 nm.When the driving current of the diode laser arrays is 110 Aand the pulse repetition rate is 200 Hz,the output of 36 mJ1319 nm laser is obtained,and the optical to optical efficiency is 8.3%.
A quasi continuous wave Nd∶YAG planar waveguide laser amplifier with a wavelength of 1319 nm is reported.The seed source is an oscillator based on a side-pumped rod Nd:YAG laser model,and the gain medium of the amplifier is a planar waveguide Nd∶YAG.The size of the YAG planar waveguide is 0.6 mm×10 mm×60 mm,the central area 0.1 mm×10 mm×50 mm is the doped region,and the surrounding area is undoped YAG.The pump source of the amplifier is a diode laser array,which is coupled from the rear end into the planar waveguide gain medium.The seed laser is coupled into the gain medium via the end facet,and a single-pass amplification is introduced.In order to achieve the good heat dissipation,two micro channel heat sinks are welded onto the Nd∶YAG planar waveguide.The end facets are coated high transmission at 1319,1064 and 808 nm.When the driving current of the diode laser arrays is 110 Aand the pulse repetition rate is 200 Hz,the output of 36 mJ1319 nm laser is obtained,and the optical to optical efficiency is 8.3%.
引文
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[18]Wang J T,Wang D,Su H,et al.Influence factors on efficiency of Nd∶YAG planar waveguide laser amplifier[J].Chinese Journal of Lasers,2017,44(12):1201005.王君涛,汪丹,苏华,等.Nd∶YAG平面波导激光放大器效率的影响因素[J].中国激光,2017,44(12):1201005.
[2]Wang Y F,Han K Z,Wang Y,et al.High power CW and Q-switched operation of a diode-side-pumped Nd∶YAG 1319-nm laser[J].Chinese Optics Letters,2008,6(2):124-126.
[3]Chen H X,Yang Z F,Wang J R,et al.Acomparative study on ocular damage induced by1319nm laser radiation[J].Lasers in Surgery and Medicine,2011,43(4):306-312.
[4]Wang T,Yao J Q,Yu D Y,et al.Study on CWNd∶YAG laser 1319nm and 660nm[J].Journal of Tianjin University,2004,37(5):377-381.王涛,姚建铨,郁道银,等.1319nm与660nm双波长Nd∶YAG激光器的研究[J].天津大学学报,2004,37(5):377-381.
[5]Denman C A,Hillman P D,Moore G T,et al.Realization of a 50-watt facility-class sodium guidestar pump laser[J].Proceedings of SPIE,2005,5707:46-50.
[6]Sawruk N,Lee I,Jalali M,et al.System overview of 30 W and 55 W sodium guide star laser systems[J].Proceedings of SPIE,2010,7736:77361Y.
[7]Xu Z Y,Xie S Y,Bo Y,et al.Investigation of30W-class second-generation sodium beacon laser[J].Acta Optica Sinica,2011,31(9):0900111.许祖彦,谢仕永,薄勇,等.30W级第二代钠信标激光器研究[J].光学学报,2011,31(9):0900111.
[8]Li N,Pang Y,Lu Y H,et al.800 mJ high beam quality all-solid-state 1319 nm pulsed laser[J].Chinese Journal of Lasers,2013,40(8):0802007.李楠,庞毓,鲁燕华,等.800mJ高光束质量全固态1319nm脉冲激光器[J].中国激光,2013,40(8):0802007.
[9]Zheng J K,Bo Y,Xie S Y,et al.High power quasicontinuous-wave diode-end-pumped Nd∶YAG slab amplifier at 1319nm[J].Chinese Physics Letters,2013,30(7):074202.
[10]Xie S Y,Zhang X F,Le X Y,et al.A quasicontinuous dual-end 885 nm diode-pumped threemirror ring-cavity laser operating at 1319 nm[J].Acta Physica Sinica,2016,65(15):154205.谢仕永,张小富,乐小云,等.885nm双端泵准连续微秒脉冲1319nm三镜环形腔激光[J].物理学报,2016,65(15):154205.
[11]Hou W,Lin X C,Li J M.1.2 kW high power1319nm all-solid state laser[J].Chinese Journal of Lasers,2009,36(12):3328.侯玮,林学春,李晋闽.1.2kW高功率1319nm波长全固态激光器[J].中国激光,2009,36(12):3328.
[12]Bian Q,Zhong Q S,Chang J Q,et al.High-power narrow-linewidth QCW diode-pumped TEM001319nm Nd∶YAG oscillator using twisted-mode technique[J].Laser Physics Letters,2017,14(6):065001.
[13]Lu Y H,Zhang L,Liu D,et al.7.13 W All-solidstate 1319 nm macro-micro pulse laser[J].High Power Laser and Particle Beams,2009,21(11):1604-1606.鲁燕华,张雷,刘东,等.7.13W全固态1319nm宏微脉冲激光器[J].强激光与粒子束,2009,21(11):1604-1606.
[14]Chen R,Zhai G,Jin F,et al.Study on pulsed electro-optic Q-switched Nd∶YAG laser at1319nm[J].Laser Technology,2010,34(5):603-606.陈仁,翟刚,金锋,等.1319nm Nd∶YAG脉冲电光调Q激光器的研究[J].激光技术,2010,34(5):603-606.
[15]Chen S L,Liu Q,Meng J Q,et al.Research progress in planar waveguide lasers[J].Laser&Optoelectronics Progress,2017,54(5):050004.陈思露,刘琪,孟俊清,等.平面波导激光器的研究进展[J].激光与光电子学进展,2017,54(5):050004.
[16]Chen Y J,Jiang H,Wang J T,et al.Planar waveguide oscillator with high output power and high efficiency[J].Chinese Journal of Lasers,2017,44(4):0401001.陈月健,姜豪,王君涛,等.高功率高效率平面波导激光振荡器实验研究[J].中国激光,2017,44(4):0401001.
[17]Koechner W.Solid-state laser engineering[M].Sun W,Jiang Z W,Cheng G X.Transl.Beijing:Science Press,2002.克希耐尔.固体激光工程[M].孙文,江泽文,程国祥,译.北京:科学出版社,2002.
[18]Wang J T,Wang D,Su H,et al.Influence factors on efficiency of Nd∶YAG planar waveguide laser amplifier[J].Chinese Journal of Lasers,2017,44(12):1201005.王君涛,汪丹,苏华,等.Nd∶YAG平面波导激光放大器效率的影响因素[J].中国激光,2017,44(12):1201005.