Abstract

Recently, a novel Raman technique was introduced based on short excitation and prolonged coherent interrogation (SERI) of molecular transitions.¹ The experimental method allows improvement of spectral resolution beyond the limitations of spontaneous Raman spectroscopy. Up to now, discrete excitation frequencies were used, limiting wide applicability.^1,2 We present the first known data of the SEPI technique using continuously tunable excitation. The smooth tunability allows the determination of frequency positions and amplitudes of individual transitions. In congested spectral regions, new information, not available fiora spontaneous Raman data, is obtained.

© 1984 Optical Society of America