Abstract

Observation of resonance Raman scattering of fluorescent molecules is difficult because the weak Raman lines are often overwhelmed by the strong fluorescence background in the same spectral region. Recent advances include the development of the infrared Raman spectrometer and the shifted-excitation Raman-difference spectroscopy technique.¹ In this paper we describe the observation of stimulated resonance Raman scattering (SRRS) of fluorescent molecules at high input-laser intensity I_in. SRRS increases exponentially with input-laser intensity and dominates the background-fluorescence-lasing spectra at high I_in.

© 1993 Optical Society of America