Improvement of 2.79-μm laser performance on laser diode side-pumped GYSGG/Er,Pr:GYSGG bonding rod with concave end-faces*

Chinese Physics B - Tập 28 Số 11 - Trang 114208 - 2019
Xuyao Zhao1,2, Dunlu Sun1, Jianqiao Luo1, Huili Zhang1, Zhongqing Fang1,2, Cong Quan1,2, Lunzhen Hu1,2, Zhiyuan Han1,2, Maojie Cheng1, Shaotang Yin1
1The Key Laboratory of Photonic Devices and Materials, Anhui Province, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, China
2University of Science and Technology of China, Hefei 230022, China

Tóm tắt

A comparative study on the laser performance between bonding and non-bonding Er,Pr:GYSGG rods side-pumped by 970-nm laser diodes (LDs) is conducted for the thermal lensing compensation. The analyses of the thermal distribution and thermal focal length show that the bonding rod possesses a high cooling efficiency and weak thermal lensing effect compared with the conventional Er,Pr:GYSGG rod. Moreover, the laser characteristics of maximum output power, slope efficiency, and laser beam quality of the bonding rod with concave end-faces operated at 2.79 μm are improved under the high-repetition-rate operation. A maximum output power of 13.96 W is achieved at 150-Hz and 200-μs pulse width, corresponding to a slope efficiency of 17.7% and an electrical-to-optical efficiency of 12.9%. All results suggest that the combination of thermal bonding and concave end-face is a suitable structure for thermal lensing compensation.

Từ khóa


Tài liệu tham khảo

Vodopyanov, 2000, Opt. Lett., 25, 841, 10.1364/OL.25.000841

Chen, 2013, Opt. Commun., 301–302, 84, 10.1016/j.optcom.2013.03.048

Pollnau, 2001, IEEE J. Quantum Electron., 7, 30, 10.1109/2944.924006

Chen, 2013, Opt. Express, 21

Zhao, 2017, Chin. Phys. B, 26

Zhao, 2018, Opt. Lett., 43, 4312, 10.1364/OL.43.004312

Neuenschwander, 1995, IEEE J. Quantum Electron., 31, 1082, 10.1109/3.387046

Hajiesmaeilbaigi, 2005, Laser Phys. Lett., 2, 437, 10.1002/lapl.200510027

Tsunekane, 1998, Appl. Opt., 37, 5713, 10.1364/AO.37.005713

Wang, 2015, Laser Phys. Lett., 12

Weber, 1999, Opt. Mater., 11, 245, 10.1016/S0925-3467(98)00047-0

Brown, 1997, IEEE J. Quantun. Electron., 33, 861, 10.1109/3.572162

Fang, 2017, Opt. Express, 25

Koechner, 2005

Degallaix, 2005, Gen. Relativ. Gravit., 37, 1581, 10.1007/s10714-005-0138-4

Siengman, 1993, 13

Thông tin
Thông tin xuất bản

Chinese Physics B

Tập 28 Số 11

114208

Thông tin tác giả