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

页码：9511 / 9520

页数：10

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