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Title: Spatio-temporal modeling and optimization of a deformable-grating compressor for short high-energy laser pulses

Monolithic large-scale diffraction gratings are desired to improve the performance of high-energy laser systems and scale them to higher energy, but the surface deformation of these diffraction gratings induce spatio-temporal coupling that is detrimental to the focusability and compressibility of the output pulse. A new deformable-grating-based pulse compressor architecture with optimized actuator positions has been designed to correct the spatial and temporal aberrations induced by grating wavefront errors. An integrated optical model has been built to analyze the effect of grating wavefront errors on the spatio-temporal performance of a compressor based on four deformable gratings. Moreover, a 1.5-meter deformable grating has been optimized using an integrated finite-element-analysis and genetic-optimization model, leading to spatio-temporal performance similar to the baseline design with ideal gratings.
Authors:
 [1] ;  [2] ;  [2]
  1. Rochester Institute of Technology, Rochester, NY (United States)
  2. Univ. of Rochester, Rochester, NY (United States)
Publication Date:
Grant/Contract Number:
NA0001944
Type:
Published Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 23; Journal Issue: 20; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Research Org:
Univ. of Rochester, Rochester, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; diffraction gratings; pulse compression; active or adaptive optics
OSTI Identifier:
1222244
Alternate Identifier(s):
OSTI ID: 1242270