High-speed BOCDA system with dual sidebands for analyzing two-dimensional deformation induced by mechanical shock

초록

Dual sidebands are newly introduced to a Brillouin optical correlation domain analysis (BOCDA) system as an enhanced configuration for generating orthogonally-polarized probe sidebands (OPS). Pump and probe waves are independently generated as double sidebands of different modulations, effectively minimizing the beat noise from common components and achieving a 37.5% reduction in measurement error. The BOCDA system with dual sidebands is applied to high-speed mapping of the two-dimensional deformation of a wooden board induced by mechanical shock. © 2025 SPIE.

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