An all-electronic fail-safe for stimulated Brillouin scattering suppression

Conference · 14 March 2023 · High Power Lasers for Fusion Research VII

DOI:https://doi.org/10.1117/12.2644314· OSTI ID:1974593

Spilatro, Michael ^[1]; Bittle, Wade A. ^[1]; Bock, Michael ^[1]; Carofanello, Zachary ^[1]; Dorrer, Christophe ^[1]; Hill, Elizabeth M. ^[1]; Landis, Nathan ^[1]; Zuegel, Jonathan D. ^[1]

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1. University of Rochester, NY (United States)

The mitigation of transverse stimulated Brillouin scattering (SBS) via phase modulation is mandatory to avoid damage in high-energy laser systems. A novel fail-safe system that indirectly monitors the optical bandwidth applied to suppress SBS by monitoring the input, reflected, and through rf power of the SBS-suppression lithium-niobate phase modulator is demonstrated. The fail-safe system has high sensitivity and reliability provided by optimized redundant circuits for power monitoring and fail-safe decision logic. Calibration of the fail-safe’s thresholds is straightforward. Furthermore, the fail-safe circuitry reacts within 45 ns to stop an incorrectly modulated pulse by blocking the propagation of an electronic timing trigger.

• Research Organization: Univ. of Rochester, NY (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: NA0003856
• OSTI ID: 1974593
• Journal Information: High Power Lasers for Fusion Research VII, Vol. 12401; Conference: High Power Lasers for Fusion Research VII, San Francisco, CA (United States), 2 Jan - 2 Feb 2023
• Country of Publication: United States
• Language: English

Related Subjects

phase modulation
stimulated Brillouin scattering suppression
fail-safe
high-energy lasers