Design of square-shaped beam homogenizer for petawatt-class Ti:sapphire amplifier

被引：20
|
作者：
Hwang, Seungjin [1 ]
Kim, Taeshin [1 ]
Lee, Jongmin [2 ]
Yu, Tae Jun [1 ,2 ]
机构：
[1] Handong Global Univ, Dept Adv Green Energy & Environm, Pohang 37554, South Korea
[2] Handong Global Univ, Global Inst Laser Technol, Global Green Res & Dev Ctr, Pohang 37554, South Korea
来源：
OPTICS EXPRESS | 2017年 / 25卷 / 09期
关键词：
CHIRPED-PULSE AMPLIFICATION; CLASS LASER SYSTEM; HIGH-CONTRAST; GENERATION;
D O I：
10.1364/OE.25.009511
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have designed a square-shaped beam homogenizer using a lens array for pumping a petawatt-class Ti:sapphire amplifier. The designed beam homogenizer generated a flat-top uniform square pump beam with 5.1% of edge steepness and 2.7% of RMS spatial uniformity, respectively. This pump beam generated an output beam with 74 J of energy and 56.8% of extraction efficiency, respectively. A scalar diffraction and two-dimensional amplification simulation were performed for optimization. The results indicate the possibility of improving an amplification efficiency and developing a compact square petawatt-class laser system. (C) 2017 Optical Society of America
引用
收藏
页码：9511 / 9520
页数：10
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