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Title: Intracavity adaptive correction of a 10 kW, solid-state, heat-capacity laser

Abstract

The Solid-State, Heat-Capacity Laser (SSHCL), under development at Lawrence Livermore National Laboratory (LLNL) is a large aperture (100 cm{sup 2}), confocal, unstable resonator requiring near-diffraction-limited beam quality. There are two primary sources of the aberrations in the system: residual, static aberrations from the fabrication of the optical components and predictable, time-dependent, thermally-induced index gradients within the gain medium. A deformable mirror placed within the cavity is used to correct the aberrations that are sensed externally with a Shack-Hartmann wavefront sensor. Although the complexity of intracavity adaptive correction is greater than that of external correction, it enables control of the mode growth within the resonator, resulting in the ability to correct a more aberrated system longer. The overall system design, measurement techniques and correction algorithms are discussed. Experimental results from initial correction of the static aberrations and dynamic correction of the time-dependent aberrations are presented.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15014238
Report Number(s):
UCRL-PROC-204146
Journal ID: ISSN 0277-786X; TRN: US200803%%617
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Journal Volume: 5333; Conference: Presented at: Solid State & Diode Laser Technology Review, Albuquerque, NM, United States, Jun 08 - Jun 10, 2004
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUMM MECHANICS, GENERAL PHYSICS; 42 ENGINEERING; ALGORITHMS; APERTURES; DESIGN; FABRICATION; LASERS; LAWRENCE LIVERMORE NATIONAL LABORATORY; MIRRORS; RESONATORS

Citation Formats

LaFortune, K N, Hurd, R L, Brase, J M, and Yamamoto, R M. Intracavity adaptive correction of a 10 kW, solid-state, heat-capacity laser. United States: N. p., 2004. Web. doi:10.1117/12.531034.
LaFortune, K N, Hurd, R L, Brase, J M, & Yamamoto, R M. Intracavity adaptive correction of a 10 kW, solid-state, heat-capacity laser. United States. doi:10.1117/12.531034.
LaFortune, K N, Hurd, R L, Brase, J M, and Yamamoto, R M. Thu . "Intracavity adaptive correction of a 10 kW, solid-state, heat-capacity laser". United States. doi:10.1117/12.531034. https://www.osti.gov/servlets/purl/15014238.
@article{osti_15014238,
title = {Intracavity adaptive correction of a 10 kW, solid-state, heat-capacity laser},
author = {LaFortune, K N and Hurd, R L and Brase, J M and Yamamoto, R M},
abstractNote = {The Solid-State, Heat-Capacity Laser (SSHCL), under development at Lawrence Livermore National Laboratory (LLNL) is a large aperture (100 cm{sup 2}), confocal, unstable resonator requiring near-diffraction-limited beam quality. There are two primary sources of the aberrations in the system: residual, static aberrations from the fabrication of the optical components and predictable, time-dependent, thermally-induced index gradients within the gain medium. A deformable mirror placed within the cavity is used to correct the aberrations that are sensed externally with a Shack-Hartmann wavefront sensor. Although the complexity of intracavity adaptive correction is greater than that of external correction, it enables control of the mode growth within the resonator, resulting in the ability to correct a more aberrated system longer. The overall system design, measurement techniques and correction algorithms are discussed. Experimental results from initial correction of the static aberrations and dynamic correction of the time-dependent aberrations are presented.},
doi = {10.1117/12.531034},
journal = {},
issn = {0277-786X},
number = ,
volume = 5333,
place = {United States},
year = {2004},
month = {5}
}

Conference:
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