Abstract

Spatially resolved nonlinear scattering of a train of picosecond pulses from ethanol microdroplets is investigated. Different time behavior is observed for light with the same and the opposite sense of circulation as the input-coupled light. The forward-circulating light exhibits a smooth, delayed pulse-to-pulse growth, attributed to increased input coupling with time induced by the laser pulses. The backward-circulating light has an irregular time behavior, attributed to near-backward stimulated Brillouin scattering. Increased scattering as a result of CO₂ (compared with He) dissolved gas is demonstrated by an intensity decrease of the spatially precessed radiation on a cavity resonance.

© 1995 Optical Society of America

Laser-induced distortion for increased input coupling of light to droplet-cavity modes

Justin M. Hartings, Xiaoyun Pu, Janice L. Cheung, and Richard K. Chang
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Laser-induced radiation leakage from microdroplets

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Radial profiling of microdroplets using cavity-enhanced Raman spectroscopy

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