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Hybrid Rayleigh-Brillouin-Raman distributed sensing system: Coded pulse pairs are employed for simultaneously measuring vibration, strain and temperature distributions, through an optimized detection scheme of Rayleigh, Brillouin, and Raman scatterings.
The integration between vertical-cavity surface-emitting lasers and metasurfaces has been demonstrated to enable on-chip high-angle illumination for high-contrast microscopy, providing a versatile illumination module for biophotonics and life-science applications.
