IMAGED INTRACAVITY LASER ABSORPTION SPECTROSCOPY
Loading...
Date
1977
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Intracavity absorption spectroscopy with dye lasers has been used to detect absorptions with optical densities $10^{2}$ to $10^{5}$ weaker than can be detected with ordinary spectrometers. We have now shown that using a laser cavity which supports many high order transverse modes it is possible to enhance a spatial as well as a spectral variation in absorption. We can detect weakly absorbing samples that cover only a small fraction of the intracavity beam. This technique has some practical applications and can be used to increase the sensitivity of the intracavity technique.
Description
Author Institution: Department of Chemistry, Illinois Institute of Technology