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

M. Spilatro; W. A. Bittle; M. Bock; Z. Carofanello; C. Dorrer; E. M. Hill; N. Landis; J. D. Zuegel

doi:10.1117/12.2644314

14 March 2023 An all-electronic fail-safe for stimulated Brillouin scattering suppression

M. Spilatro, W. A. Bittle, M. Bock, Z. Carofanello, C. Dorrer, E. M. Hill, N. Landis, J. D. Zuegel

Author Affiliations +

Proceedings Volume 12401, High Power Lasers for Fusion Research VII; 1240103 (2023) https://doi.org/10.1117/12.2644314
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

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. The fail-safe circuitry reacts within 45 ns to stop an incorrectly modulated pulse by blocking the propagation of an electronic timing trigger.

Conference Presentation

Citation Download Citation

M. Spilatro, W. A. Bittle, M. Bock, Z. Carofanello, C. Dorrer, E. M. Hill, N. Landis, and J. D. Zuegel "An all-electronic fail-safe for stimulated Brillouin scattering suppression", Proc. SPIE 12401, High Power Lasers for Fusion Research VII, 1240103 (14 March 2023); https://doi.org/10.1117/12.2644314

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