Simulation of grating compressor misalignment tolerances and mitigation strategies for chirped-pulse–amplification systems of varying bandwidths and beam sizes
Here, the effects of pulse compressor grating misalignment on the pulse duration and focusability are simulated for chirped-pulse–amplification systems of varying bandwidth, beam size, groove density, and incident angle. Tilt-alignment tolerances are specified based on a √2 drop in focused intensity, illustrating how tolerances scale with bandwidth and compressor beam size, which scales with energy when transformed via known grating damage thresholds. Grating-alignment tolerance scaling with grating groove density and incident/diffracted angles is investigated and applied to compressor design. A correlation between grating tip and in-plane rotation error sensitivity is defined and used to compensate residual out-of-plane angular dispersion, even for ultra-broadband pulses. Simulation of dispersion compensation methods after grating misalignment are shown to mitigate pulse lengthening, limited by temporal contrast degradation and higher-order effects for ultrabroad bandwidths.
- Research Organization:
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Contributing Organization:
- Laboratory for Laser Energetics, University of Rochester
- Grant/Contract Number:
- NA0001944
- OSTI ID:
- 1491233
- Alternate ID(s):
- OSTI ID: 1489319
- Report Number(s):
- 2018-166, 1459; APOPAI; 2018-166, 1459, 2415
- Journal Information:
- Applied Optics, Vol. 58, Issue 2; ISSN 1559-128X
- Publisher:
- Optical Society of AmericaCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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