Abstract

In this communication a method of electro-optic phase-sensitive detection is described. Phase-sensitive detection is exploited to suppress fluorescence which lags the modulated laser in phase while detecting Raman scattering, which is in phase with the excitation. In addition, ultra-fast phenomena may be studied using slow detectors by measuring the phase shift of the emission relative to the phase of the exciting laser light, which is modulated at high frequencies.

© 1984 Optical Society of America