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Title: Power balancing a multibeam laser

Abstract

Multibeam lasers often require an output beam balance that specifies the degree of simultaneity of the laser output energy, instantaneous power, or instantaneous irradiance (power per unit area). Here, this work describes the general problem of balancing a multibeam laser. Specific techniques used to balance the output power of the 60-beam pulsed OMEGA Laser System are discussed along with a measured reduction of beam-to-beam imbalance. In particular, the square-pulse distortion induced by a simple saturating amplifier operating with its output at some fraction of its saturation fluence is derived, and a method to exchange gain between saturated amplifiers in a single beam that have different saturation fluences to adjust balance is described.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Research Org.:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1515071
Report Number(s):
2018-218,1497
Journal ID: ISBN 9781510624382; 2018-218, 1497, 2457
Grant/Contract Number:  
NA0001944
Resource Type:
Accepted Manuscript
Journal Name:
Proc. SPIE
Additional Journal Information:
Journal Volume: 10898; Conference: SPIE LASE 2019, San Francisco, CA (United States), 2-7 Feb 2019
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; Inertial confinement fusion laser; OMEGA 60; power balance; master oscillator power amplifier

Citation Formats

Sampat, Siddharth, Kosc, Tanya Z., Bauer, Katelynn, Dean, Richard, Donaldson, William R., Kwiatkowski, Joseph, Moshier, Robert, Rigatti, Amy, Romanofsky, Mark, Waxer, Leon J., Kelly, John H., Haefner, Constantin L., and Awwal, Abdul A. Power balancing a multibeam laser. United States: N. p., 2019. Web. doi:10.1117/12.2506823.
Sampat, Siddharth, Kosc, Tanya Z., Bauer, Katelynn, Dean, Richard, Donaldson, William R., Kwiatkowski, Joseph, Moshier, Robert, Rigatti, Amy, Romanofsky, Mark, Waxer, Leon J., Kelly, John H., Haefner, Constantin L., & Awwal, Abdul A. Power balancing a multibeam laser. United States. doi:10.1117/12.2506823.
Sampat, Siddharth, Kosc, Tanya Z., Bauer, Katelynn, Dean, Richard, Donaldson, William R., Kwiatkowski, Joseph, Moshier, Robert, Rigatti, Amy, Romanofsky, Mark, Waxer, Leon J., Kelly, John H., Haefner, Constantin L., and Awwal, Abdul A. Wed . "Power balancing a multibeam laser". United States. doi:10.1117/12.2506823.
@article{osti_1515071,
title = {Power balancing a multibeam laser},
author = {Sampat, Siddharth and Kosc, Tanya Z. and Bauer, Katelynn and Dean, Richard and Donaldson, William R. and Kwiatkowski, Joseph and Moshier, Robert and Rigatti, Amy and Romanofsky, Mark and Waxer, Leon J. and Kelly, John H. and Haefner, Constantin L. and Awwal, Abdul A.},
abstractNote = {Multibeam lasers often require an output beam balance that specifies the degree of simultaneity of the laser output energy, instantaneous power, or instantaneous irradiance (power per unit area). Here, this work describes the general problem of balancing a multibeam laser. Specific techniques used to balance the output power of the 60-beam pulsed OMEGA Laser System are discussed along with a measured reduction of beam-to-beam imbalance. In particular, the square-pulse distortion induced by a simple saturating amplifier operating with its output at some fraction of its saturation fluence is derived, and a method to exchange gain between saturated amplifiers in a single beam that have different saturation fluences to adjust balance is described.},
doi = {10.1117/12.2506823},
journal = {Proc. SPIE},
number = ,
volume = 10898,
place = {United States},
year = {2019},
month = {5}
}

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Works referenced in this record:

Predicting and measuring optical pulse shapes on the OMEGA laser system
conference, January 2001

  • Donaldson, W. R.; Kelly, J. H.; Keck, R. L.
  • CLEO 2001. Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Technical Digest, Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Technical Digest (IEEE Cat. No.01CH37170)
  • DOI: 10.1109/CLEO.2001.947647

National direct-drive program on OMEGA and the National Ignition Facility
journal, October 2016


Power balancing the multibeam OMEGA laser
journal, January 2018