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Title: Spatial filters for high average power lasers

Patent ·
OSTI ID:1080283

A spatial filter includes a first filter element and a second filter element overlapping with the first filter element. The first filter element includes a first pair of cylindrical lenses separated by a first distance. Each of the first pair of cylindrical lenses has a first focal length. The first filter element also includes a first slit filter positioned between the first pair of cylindrical lenses. The second filter element includes a second pair of cylindrical lenses separated by a second distance. Each of the second pair of cylindrical lenses has a second focal length. The second filter element also includes a second slit filter positioned between the second pair of cylindrical lenses.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
8,320,056
Application Number:
12/544,988
OSTI ID:
1080283
Country of Publication:
United States
Language:
English

References (2)

Laser beam filtering by refractive or diffractive microstructures conference August 2005
High-damage-threshold pinhole for glass fusion laser applications
  • Kurnit, Norman A.; Letzring, S. A.; Johnson, Randall P.
  • Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion, SPIE Proceedings https://doi.org/10.1117/12.354211
conference July 1999

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