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Title: Power balancing the multibeam OMEGA laser

Journal Article · · Applied Optics
DOI:https://doi.org/10.1364/AO.57.009571· OSTI ID:1485416
ORCiD logo [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
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Multibeam lasers often require an output beam balance that specifies the degree of simultaneity of laser output energy, instantaneous power, or instantaneous irradiance (power per unit area). In this work the general problem of balancing a multibeam laser is described. 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 novel method of exchanging gain between saturated amplifiers in a single beam that have different saturation fluences to adjust balance is described.

Research Organization:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0001944
OSTI ID:
1485416
Alternate ID(s):
OSTI ID: 1480557
Report Number(s):
2018-169, 1452; APOPAI
Journal Information:
Applied Optics, Vol. 57, Issue 32; ISSN 1559-128X
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

References (11)

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Position measurement with a resolution and noise‐limited instrument journal June 1986
High efficiency frequency tripling schemes for high-power Nd: Glass lasers journal September 1981
Laser performance operation model and its application to LIL energy and power balance journal May 2008
Irradiation uniformity for high-compression laser-fusion experiments journal May 1999
Enhancements to the timing of the OMEGA laser system to improve illumination uniformity conference September 2016
Random Phasing of High-Power Lasers for Uniform Target Acceleration and Plasma-Instability Suppression journal September 1984
Demonstration of dual-tripler broadband third-harmonic generation and implications for OMEGA and the NIF
  • Babushkin, Andrei; Craxton, Robert S.; Oskoui, Stephen
  • Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion, SPIE Proceedings https://doi.org/10.1117/12.354153
conference July 1999
Reduction of laser imprinting using polarization smoothing on a solid-state fusion laser journal April 1999
Liquid-crystal laser optics: design, fabrication, and performance journal January 1988

Cited By (1)

Inferred UV fluence focal-spot profiles from soft x-ray pinhole-camera measurements on OMEGA journal February 2020

Figures / Tables (16)

Fig. 1.(p. 2)figure Fig. 1.
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Table 1.(p. 8)table Table 1.
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