Mitigation of the harmful effects of stray-light reflections in high-energy laser systems
Abstract
Reduction or elimination of negative consequences of reflected stray light from lens surfaces is achieved by propagating a laser beam through an eccentric pupil that excludes the optical axis of the system, which is rotationally symmetric. In such systems, stray light reflections eventually are focused onto the unique optical axis of the system, in either a real or virtual focal region. By using an eccentric pupil, all damage due to focusing of the stray light lies outside of the beam. These focal regions can, e.g., be physically blocked to eliminate beam paths that lead to optical damage, re-pulse beams and parasitic lasing.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1986785
- Patent Number(s):
- 11493756
- Application Number:
- 16/603,774
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- DOE Contract Number:
- AC52-07NA27344
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 04/19/2018
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Seppala, Lynn G., and Erlandson, Alvin C. Mitigation of the harmful effects of stray-light reflections in high-energy laser systems. United States: N. p., 2022.
Web.
Seppala, Lynn G., & Erlandson, Alvin C. Mitigation of the harmful effects of stray-light reflections in high-energy laser systems. United States.
Seppala, Lynn G., and Erlandson, Alvin C. Tue .
"Mitigation of the harmful effects of stray-light reflections in high-energy laser systems". United States. https://www.osti.gov/servlets/purl/1986785.
@article{osti_1986785,
title = {Mitigation of the harmful effects of stray-light reflections in high-energy laser systems},
author = {Seppala, Lynn G. and Erlandson, Alvin C.},
abstractNote = {Reduction or elimination of negative consequences of reflected stray light from lens surfaces is achieved by propagating a laser beam through an eccentric pupil that excludes the optical axis of the system, which is rotationally symmetric. In such systems, stray light reflections eventually are focused onto the unique optical axis of the system, in either a real or virtual focal region. By using an eccentric pupil, all damage due to focusing of the stray light lies outside of the beam. These focal regions can, e.g., be physically blocked to eliminate beam paths that lead to optical damage, re-pulse beams and parasitic lasing.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {11}
}
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