Open AccessHigh Power Continuous Wave Yb:YAG Composite Crystal Zigzag Slab Amplifier at Room Temperature
Author(s) -
Mi Li,
Tangjian Zhou,
Liu Xu,
Qingsong Gao,
Hao Hu,
Yingcheng Wu,
Dan Wang,
Jianmin Li,
Jun Lei,
Wenqiang Lv,
Yi Yu,
Zhenhai Wu,
Na Zhao
Publication year - 2017
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2017.2768408
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
A 7.07-kW Yb:YAG composite crystal zigzag slab amplifier at room temperature is developed and demonstrated, the optical-to-optical efficiency is about 29.5% and the slope efficiency is 39.5%, respectively, with the pumping power of 19.98 kW and the incident seed laser power of 1.18 kW. The influence of the pump coupling efficiency, the intensity of the seed laser, and the temperature to the extracted power from the Yb:YAG slab are analyzed by simulation. The fluorescence distribution at the end face and the transmission wavefront of the Yb:YAG slab are measured, the nonuniformity of the fluorescence distribution is less than 6%, and the P-V value of the transmission wave front distortion is less than 1.6 μm.