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Title: In situ 3-D temperature mapping of high average power cryogenic laser amplifiers

Abstract

Heat generation is a key obstacle to scaling high energy solid-state lasers to the multi-kilowatt average powers required for several key applications. We demonstrate an accurate, in situ, noninvasive optical technique to that makes three-dimensional (3-D) temperature maps within cryogenic amplifiers operating at high average power. The temperature is determined by analyzing the fluorescence spectra with a neural network function. The accuracy of the technique relies on a calibration that does not depend on simulations. Results are presented for a cryogenic Yb:YAG active mirror laser amplifier operating at different pump conditions. The technique is applicable to other solid-state lasers materials.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Colorado State Univ., Fort Collins, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1422012
Alternate Identifier(s):
OSTI ID: 1502483
Grant/Contract Number:  
SC0016136
Resource Type:
Published Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Name: Optics Express Journal Volume: 26 Journal Issue: 5; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; Lasers, diode-pumped; Lasers, solid-state; Lasers, ytterbium

Citation Formats

Chi, Han, Dehne, Kristian A., Baumgarten, Cory M., Wang, Hanchen, Yin, Liang, Reagan, Brendan A., and Rocca, Jorge J. In situ 3-D temperature mapping of high average power cryogenic laser amplifiers. United States: N. p., 2018. Web. doi:10.1364/OE.26.005240.
Chi, Han, Dehne, Kristian A., Baumgarten, Cory M., Wang, Hanchen, Yin, Liang, Reagan, Brendan A., & Rocca, Jorge J. In situ 3-D temperature mapping of high average power cryogenic laser amplifiers. United States. doi:10.1364/OE.26.005240.
Chi, Han, Dehne, Kristian A., Baumgarten, Cory M., Wang, Hanchen, Yin, Liang, Reagan, Brendan A., and Rocca, Jorge J. Wed . "In situ 3-D temperature mapping of high average power cryogenic laser amplifiers". United States. doi:10.1364/OE.26.005240.
@article{osti_1422012,
title = {In situ 3-D temperature mapping of high average power cryogenic laser amplifiers},
author = {Chi, Han and Dehne, Kristian A. and Baumgarten, Cory M. and Wang, Hanchen and Yin, Liang and Reagan, Brendan A. and Rocca, Jorge J.},
abstractNote = {Heat generation is a key obstacle to scaling high energy solid-state lasers to the multi-kilowatt average powers required for several key applications. We demonstrate an accurate, in situ, noninvasive optical technique to that makes three-dimensional (3-D) temperature maps within cryogenic amplifiers operating at high average power. The temperature is determined by analyzing the fluorescence spectra with a neural network function. The accuracy of the technique relies on a calibration that does not depend on simulations. Results are presented for a cryogenic Yb:YAG active mirror laser amplifier operating at different pump conditions. The technique is applicable to other solid-state lasers materials.},
doi = {10.1364/OE.26.005240},
journal = {Optics Express},
number = 5,
volume = 26,
place = {United States},
year = {2018},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1364/OE.26.005240

Citation Metrics:
Cited by: 2 works
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    Works referencing / citing this record:

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