Effect of thermally induced birefringence on high power picosecond azimuthal polarization Nd:YAG laser system

doi:10.1088/1674-1056/28/2/024205

中国物理B ›› 2019, Vol. 28 ›› Issue (2): 24205-024205.doi: 10.1088/1674-1056/28/2/024205

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Effect of thermally induced birefringence on high power picosecond azimuthal polarization Nd:YAG laser system

Hongpan Peng(彭红攀), Ce Yang(杨策), Shang Lu(卢尚), Ning Ma(马宁), Meng Chen(陈檬)

Laser Engineering Research Institute, Beijing University of Technology, Beijing 100124, China

收稿日期:2018-11-13 修回日期:2018-12-04 出版日期:2019-02-05 发布日期:2019-02-05
通讯作者: Meng Chen E-mail:chenmeng@bjut.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. U1631240), the Education Commission Program of Beijing, and Beijing Natural Science Foundation (Grant No. KZ201510005001).

Effect of thermally induced birefringence on high power picosecond azimuthal polarization Nd:YAG laser system

Hongpan Peng(彭红攀), Ce Yang(杨策), Shang Lu(卢尚), Ning Ma(马宁), Meng Chen(陈檬)

Laser Engineering Research Institute, Beijing University of Technology, Beijing 100124, China

Received:2018-11-13 Revised:2018-12-04 Online:2019-02-05 Published:2019-02-05
Contact: Meng Chen E-mail:chenmeng@bjut.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. U1631240), the Education Commission Program of Beijing, and Beijing Natural Science Foundation (Grant No. KZ201510005001).

摘要/Abstract

摘要： Pulse-burst 1064-nm picosecond azimuthal polarization beam amplification up to an average power of 16.32 W using side-pumped Nd: YAG amplifiers has been demonstrated. The maximum envelop energy as much as 16.32 mJ, corresponding to a power amplification factor of 299.5%. A simple criterion was defined to help estimate the amount of depolarization in Nd:YAG amplifier stages. The degree of depolarization of the beam was 7.1% and the beam quality was measured to be M² = 3.69. The reason for the azimuthal polarization depolarization and beam quality degradation were explained theoretically and experimentally during the amplification process.

关键词: azimuthal polarization, thermally induced birefringence, Nd:YAG amplifiers, picosecond laser

Abstract: Pulse-burst 1064-nm picosecond azimuthal polarization beam amplification up to an average power of 16.32 W using side-pumped Nd: YAG amplifiers has been demonstrated. The maximum envelop energy as much as 16.32 mJ, corresponding to a power amplification factor of 299.5%. A simple criterion was defined to help estimate the amount of depolarization in Nd:YAG amplifier stages. The degree of depolarization of the beam was 7.1% and the beam quality was measured to be M² = 3.69. The reason for the azimuthal polarization depolarization and beam quality degradation were explained theoretically and experimentally during the amplification process.

Key words: azimuthal polarization, thermally induced birefringence, Nd:YAG amplifiers, picosecond laser

中图分类号: (Birefringence)

42.25.Lc

42.60.Da (Resonators, cavities, amplifiers, arrays, and rings) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 29.25.Lg (Ion sources: polarized)

彭红攀, 杨策, 卢尚, 马宁, 陈檬. Effect of thermally induced birefringence on high power picosecond azimuthal polarization Nd:YAG laser system[J]. 中国物理B, 2019, 28(2): 24205-024205.

Hongpan Peng(彭红攀), Ce Yang(杨策), Shang Lu(卢尚), Ning Ma(马宁), Meng Chen(陈檬). Effect of thermally induced birefringence on high power picosecond azimuthal polarization Nd:YAG laser system[J]. Chin. Phys. B, 2019, 28(2): 24205-024205.

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Effect of thermally induced birefringence on high power picosecond azimuthal polarization Nd:YAG laser system

Effect of thermally induced birefringence on high power picosecond azimuthal polarization Nd:YAG laser system

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