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Optical Engineering

Modeling adapted to manufacturing of holographic super Gaussian gratings
Author(s): Amir Asgari; Houshang A. Kazaz; Mohammad H. Maleki; Naser P. Shabestari; Eesa Alidokht; Mahmood Bakhshandeh
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Paper Abstract

A few holographic metallic (gold and silver) gratings with maximum diffraction efficiency (DE) in the 700 to 1100 nm wavelength range were designed. These designed diffraction gratings can be attractive for stretching and compressing pulses in chirped pulse amplification (CPA) technology. They were optimized for transverse magnetic polarized light in the first order (littrow mount). KPP1206 photoresist was used to model the final pattern on photoresist thin film. To obtain super Gaussian profiles, approximately identical exposure energy density intervals were used for optimizing grating profile. The optimized gold and silver gratings were compared in terms of DE, bandwidth and incidence angle range. Dependence of DE on the depth and duty cycle of super Gaussian gold and silver gratings showed that the silver grating had higher DE than the gold grating in 1064 nm. Fabricated silver grating based on modeling results had good agreement with experimental results.

Paper Details

Date Published: 1 November 2012
PDF: 6 pages
Opt. Eng. 51(11) 115801 doi: 10.1117/1.OE.51.11.115801
Published in: Optical Engineering Volume 51, Issue 11
Show Author Affiliations
Amir Asgari, Amirkabir Univ. of Technology (Iran, Islamic Republic of)
Houshang A. Kazaz, Amirkabir Univ. of Technology (Iran, Islamic Republic of)
Mohammad H. Maleki, Amirkabir Univ. of Technology (Iran, Islamic Republic of)
Naser P. Shabestari, Amirkabir Univ. of Technology (Iran, Islamic Republic of)
Eesa Alidokht, Amirkabir Univ. of Technology (Iran, Islamic Republic of)
Mahmood Bakhshandeh, Amirkabir Univ. of Technology (Iran, Islamic Republic of)


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