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Single-shot, phase-diversity phase retrieval for high-energy beam focal-spot diagnostics
Abstract
A single-shot, phase-diversity phase-retrieval method is demonstrated for directly characterizing the on-target focal spot at kilojoule energy in the OMEGA 60-beam laser. A 2D holographic grating that introduces diversity focal spots is installed in an existing on-target focal-spot diagnostic to obtain a single-shot diversity focal-spot image. A nonlinear optimization phase-retrieval algorithm with four diversity focal spots is employed to determine modal coefficients for the incident wavefront. The agreement between the measured and calculated focal spots is excellent. Furthermore, this approach can be easily adapted for other high-energy focal-spot diagnostics.
- Authors:
-
- University of Rochester, NY (United States)
- Publication Date:
- Research Org.:
- Univ. of Rochester, NY (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 2205584
- Alternate Identifier(s):
- OSTI ID: 2203468
- Grant/Contract Number:
- NA0003856
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the Optical Society of America. Part B, Optical Physics
- Additional Journal Information:
- Journal Volume: 40; Journal Issue: 11; Journal ID: ISSN 0740-3224
- Publisher:
- Optical Society of America (OSA)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Bahk, Seung-Whan, Sampat, Siddharth, Heimbueger, Matthew, Weiner, David, Kwiatkowski, Joseph, Bauer, Katelynn A., and Waxer, Leon J. Single-shot, phase-diversity phase retrieval for high-energy beam focal-spot diagnostics. United States: N. p., 2023.
Web. doi:10.1364/josab.498218.
Bahk, Seung-Whan, Sampat, Siddharth, Heimbueger, Matthew, Weiner, David, Kwiatkowski, Joseph, Bauer, Katelynn A., & Waxer, Leon J. Single-shot, phase-diversity phase retrieval for high-energy beam focal-spot diagnostics. United States. https://doi.org/10.1364/josab.498218
Bahk, Seung-Whan, Sampat, Siddharth, Heimbueger, Matthew, Weiner, David, Kwiatkowski, Joseph, Bauer, Katelynn A., and Waxer, Leon J. Tue .
"Single-shot, phase-diversity phase retrieval for high-energy beam focal-spot diagnostics". United States. https://doi.org/10.1364/josab.498218.
@article{osti_2205584,
title = {Single-shot, phase-diversity phase retrieval for high-energy beam focal-spot diagnostics},
author = {Bahk, Seung-Whan and Sampat, Siddharth and Heimbueger, Matthew and Weiner, David and Kwiatkowski, Joseph and Bauer, Katelynn A. and Waxer, Leon J.},
abstractNote = {A single-shot, phase-diversity phase-retrieval method is demonstrated for directly characterizing the on-target focal spot at kilojoule energy in the OMEGA 60-beam laser. A 2D holographic grating that introduces diversity focal spots is installed in an existing on-target focal-spot diagnostic to obtain a single-shot diversity focal-spot image. A nonlinear optimization phase-retrieval algorithm with four diversity focal spots is employed to determine modal coefficients for the incident wavefront. The agreement between the measured and calculated focal spots is excellent. Furthermore, this approach can be easily adapted for other high-energy focal-spot diagnostics.},
doi = {10.1364/josab.498218},
journal = {Journal of the Optical Society of America. Part B, Optical Physics},
number = 11,
volume = 40,
place = {United States},
year = {Tue Oct 24 00:00:00 EDT 2023},
month = {Tue Oct 24 00:00:00 EDT 2023}
}
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