Broadband and high efficiency metal-multilayer dielectric grating based on non-quarter wave coatings as reflective mirror for 800 nm

被引：6

作者：

Kong, Weijin ^{[1
,2
]}

Zhang, Wenfei ^{[1
]}

Yun, Maojin ^{[1
,2
]}

Liu, Junhai ^{[1
,2
]}

Sun, Xin ^{[1
]}

Wang, Wei ^{[3
]}

机构：

[1] Qingdao Univ, Coll Phys Sci, Qingdao 266071, Peoples R China

[2] Qingdao Univ, Key Lab Photon Mat & Technol Univ Shandong, Qingdao 266071, Peoples R China

[3] Shandong Jiao Tong Univ, Coll Sci, Jinan 250357, Peoples R China

来源：

JOURNAL OF MODERN OPTICS | 2012年 / 59卷 / 19期

基金：

美国国家科学基金会;

关键词：

metal-multilayer dielectric grating; broadband; high efficiency; non-quarter wave coating; DAMAGE THRESHOLD; DIFFRACTION; COMPRESSION; DESIGN; IMPLEMENTATION; BANDWIDTH;

D O I：

10.1080/09500340.2012.735711

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A broadband and high efficiency metal-multilayer dielectric grating (MMDG), which was used to compress and stretch an ultra-short laser pulse in a chirped-pulse amplification (CPA) system, was designed. The diffraction characteristics of the MMDG were analyzed using the method of rigorous coupled wave analysis. The reflective mirror used for the broadband and high diffraction grating is made up of non-quarter wave metal-multi-layer dielectric coatings. Taking the diffraction efficiency of the -1 order as merit function, the parameters such as groove depth, residual thickness and reflective mirror were optimized to obtain broadband and high diffraction efficiency. The optimized MMDG shows an ultra-broadband working spectrum with an average efficiency exceeding 97% over 120nm wavelength centered at 800nm and TE polarization. The optimized MMDG should have potential application in CPA systems.

引用

页码：1680 / 1685

页数：6

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