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Proceedings Paper

Design of high-efficiency broad-bandwidth pulse compression device based on composite transmission grating with high damage threshold
Author(s): Xinrong Chen; Chaoming Li; Linyue Liu; Lin Li; Jianhong Wu; Zenghu Chang
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Paper Abstract

A novel pulse compression device has been developed for femto-second Ti: sapphire laser at 800nm center wavelength with 700nm~900nm bandwidth. This new kind of composite pulse compression device consists of two fused silica transmission gratings with 1250lp/mm and 3300lp/mm respectively and these two fused silica transmission gratings are located in two optical surfaces of the same fused silica plate. Owing to use anti-reflection transmission gratings with high space frequency (3300lp/mm), it can avoid the wave-front distort derived from coating antireflection film on one surface of the fused silica plate. Being made of fused silica, this new composite pulse compression device will be expected to have high laser damage threshold. The calculation results show that: the -1st order diffraction efficiency of 1250lp/mm grating is over 87% within the 700nm and 900nm broad-bandwidth for rectangular groove and TE polarization state. And the average diffraction efficiency within the 700nm and 900nm broad-bandwidth is more than 92%. At 800nm, the -1st transmitted order diffraction efficiency is great to 96% while the transmittance of 3300lp/mm grating is up to 99.9%.

Paper Details

Date Published: 18 November 2014
PDF: 5 pages
Proc. SPIE 9266, High-Power Lasers and Applications VII, 92661N (18 November 2014); doi: 10.1117/12.2073545
Show Author Affiliations
Xinrong Chen, Soochow Univ. (China)
Chaoming Li, Soochow Univ. (China)
Linyue Liu, Soochow Univ. (China)
Lin Li, Soochow Univ. (China)
Jianhong Wu, Soochow Univ. (China)
Zenghu Chang, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)

Published in SPIE Proceedings Vol. 9266:
High-Power Lasers and Applications VII
Ruxin Li; Upendra N. Singh; Robert F. Walter, Editor(s)

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