Centroid stabilization for laser alignment to corner cubes: designing a matched filter
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Automation of image-based alignment of NIF high energy laser beams is providing the capability of executing multiple target shots per day. One important alignment is beam centration through the second and third harmonic generating crystals in the final optics assembly (FOA), which employs two retro-reflecting corner cubes as centering references for each beam. Beam-to-beam variations and systematic beam changes over time in the FOA corner cube images can lead to a reduction in accuracy as well as increased convergence durations for the template-based position detector. A systematic approach is described that maintains FOA corner cube templates and guarantees stable position estimation.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1341987
- Alternate ID(s):
- OSTI ID: 1330975
- Report Number(s):
- LLNL-JRNL-704797; APOPAI
- Journal Information:
- Applied Optics, Vol. 56, Issue 1; ISSN 0003-6935
- Publisher:
- Optical Society of America (OSA)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 3 works
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