Abstract

The time-dependent properties of the wavelength-dispersed spectrum for a quasi-cw dye laser were measured (1) to define the operating criteria required for the quantitative application of intracavity laser spectroscopy (ILS) for absorption and (2) to determine the origin of the sensitivity limitations observed in several studies. Time-resolved and wavelength-dispersed spectra of a broadband dye laser were measured as a function of pumping power and of stability of the optical path length of the resonator cavity. The results of this study confirm that quantitative absorption measurements can be readily obtained by ILS and that the sensitivity of ILS detection derives from the overall stability of the dye laser, but especially that of its optical path length.

© 1985 Optical Society of America

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