Yb:YAG陶瓷平面波导1030nm激光放大
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摘要
将非水基流延成型和真空烧结技术制备的YAG/Yb:YAG/YAG平面波导陶瓷作为激光放大器的增益介质,研究其激光放大特性。种子源为1030 nm保偏光纤激光器,放大器的抽运源为940 nm半导体激光器阵列,抽运光经过耦合后从端面进入平面波导。对比了前端抽运和后端抽运的放大性能,测试了双端抽运的激光放大输出性能。在双端抽运下,当注入种子光的功率为136 W时,获得了功率为1.41 kW的激光输出,斜率效率达到41%。这是已报道的该类陶瓷平面波导达到的较高功率激光输出。
A YAG/Yb:YAG/YAG ceramic planar waveguide is manufactured using tape casting combined with vacuum sintering and hot isostatic pressing, which is taken as the laser gain medium to investigate the characteristics of laser amplification. A 1030 nm polarization-maintained(PM) fiber laser is used as the seed laser and a 940-nm diode laser array is used as the pumping source of the amplifier. The pumping light is coupled with the planar waveguide from the end facets. Subsequently, the amplification performances under front-end-pumping and back-end-pumping are compared, and the amplification performances of dual-end pumping are experimentally tested. In case of dual-end pumping, when the seed laser power is 136 W, the laser output power is observed to be 1.41 kW and the slope efficiency is up to 41%. To the best of our knowledge, this is the superior output power worldwide for a laser with this type of ceramic planar waveguide.
A YAG/Yb:YAG/YAG ceramic planar waveguide is manufactured using tape casting combined with vacuum sintering and hot isostatic pressing, which is taken as the laser gain medium to investigate the characteristics of laser amplification. A 1030 nm polarization-maintained(PM) fiber laser is used as the seed laser and a 940-nm diode laser array is used as the pumping source of the amplifier. The pumping light is coupled with the planar waveguide from the end facets. Subsequently, the amplification performances under front-end-pumping and back-end-pumping are compared, and the amplification performances of dual-end pumping are experimentally tested. In case of dual-end pumping, when the seed laser power is 136 W, the laser output power is observed to be 1.41 kW and the slope efficiency is up to 41%. To the best of our knowledge, this is the superior output power worldwide for a laser with this type of ceramic planar waveguide.
引文
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[2] 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.
[3] Wang J T,Wang X J,Zhou T J,et al.Design of end-pumped double cladding Nd:YAG planar waveguide laser amplifier[J].Chinese Journal of Lasers,2015,42(1):0102009.王君涛,王小军,周唐建,等.端面抽运双包层Nd:YAG平面波导激光放大器设计[J].中国激光,2015,42(1):0102009.
[4] Filgas D,Rockwell D,Spariosu K.Next-generation lasers for advanced active EO systems[J].Technology Today,2008,1:9-13.
[5] Filgas D,Clatterbuck T,Cashen M,et al.Recent results for the Raytheon RELI program[J].Proceedings of SPIE,2012,8381:83810W.
[6] Thomson I J,Baker H J,Wlodarczyk K,et al.400 W Yb:YAG planar waveguide laser using novel unstable resonators[J].Proceedings of SPIE,2010,7578:75780K.
[7] Wang J T,Wu ZH,Su H,et al.15 kW efficient CW Nd:YAG planar waveguide MOPA laser[J].Optics Letters,2017,42(16):3149-3152.
[8] 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.
[9] Gao Q S,Hu H,Pei Z P,et al.Design and experiment study of all-solid slab laser amplifier with laser power of 10 kW[J].Chinese Journal of Lasers,2012,39(2):0202001.高清松,胡浩,裴正平,等.10 kW级固体板条激光放大器设计与实验研究[J].中国激光,2012,39(2):0202001.
[10] 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.800 mJ高光束质量全固态1319 nm脉冲激光器[J].中国激光,2013,40(8):0802007.
[11] Boulon G.Fifty years of advances in solid-state laser materials[J].Optical Materials,2012,34(3):499-512.
[12] Ge L,Li J,Zhou Z W,et al.Fabrication of composite YAG/Nd:YAG/YAG transparent ceramics for planar waveguide laser[J].Optical Materials Express,2014,4(5):1042-1049.
[13] Lin H F,Tang F,Chen W D,et al.Diode-pumped tape casting planar waveguide YAG/Nd:YAG/YAG ceramic laser[J].Optics Express,2015,23(6):8104-8112.
[14] Liu J,Ge L,Feng L W,et al.Diode-pumped composite ceramic Nd:YAG planar waveguide amplifier with 327 mJ output at 100 Hz repetition rate[J].Chinese Optics Letters,2016,14(5):051404.
[15] Wang C,Li W X,Yang C,et al.Ceramic planar waveguide laser of non-aqueous tape casting fabricated YAG/Yb:YAG/YAG[J].Scientific Reports,2016,6:31289.
[16] Li J,Ge L,Zhou Z W,et al.Development of solid-state waveguide laser materials[J].Journal of the Chinese Ceramic Society,2015,43(1):48-59.李江,葛琳,周智为,等.全固态波导激光材料的研究进展[J].硅酸盐学报,2015,43(1):48-59.
[17] Tang F,Cao Y G,Huang J Q,et al.Multilayer YAG/Re:YAG/YAG laser ceramic prepared by tape casting and vacuum sintering method[J].Journal of the European Ceramic Society,2012,32(16):3995-4002.
[18] Yang K W,Ba X W,Li J,et al.Multilayer YAG/Yb:YAG composite ceramic laser[J].IEEE Journal of Selected Topics in Quantum Electronics,2015,21(1):168-172.
[19] Li J,Jiang N,Ge L,et al.Research development and future prospect of optical waveguide laser ceramics[J].Laser & Optoelectronics Progress,2018,55(3):030001.李江,姜楠,葛琳,等.光波导激光陶瓷的研究进展与展望[J].激光与光电子学进展,2018,55(3):030001.
[20] Koechner W.Solid-state laser engineering[M].Sun W,Transl.Beijing:Science Press,2002:357-397.克希耐尔.固体激光工程[M].孙文,译.北京:科学出版社,2002:357-397.