Abstract

Insertion of samples into a broad-band dye-laser cavity enhances photographic detectability of trace absorptions by approximately three orders of magnitude. Optical densities as small as 0.0004 were readily detected in a dilute solution of Eu(NO₃)₃. In a modified technique the bandwidth of the dye laser was reduced by using prisms, and the wavelength of this narrow band was swept through the absorption. The modified technique permitted detection of optical densities as small as 0.01. Solutions of theoretical equations describing both processes give good agreement with experimental results, and they provide insight into the mechanism of the effect. The measurements with the broad-band laser could be made in 100 ns or less; therefore, this technique should provide a powerful tool for detection of short-lived transients in very small concentrations.

© 1972 Optical Society of America

Enhancement of Absorption Spectra by Dye-Laser Quenching*

Norman C. Peterson, Michael J. Kurylo, Walter Braun, Arnold M. Bass, and Richard A. Keller
J. Opt. Soc. Am. 61(6) 746-750 (1971)

Enhancement of absorption spectra by dye-laser quenching, III: Quantitative aspects and a comparison of flash-lamp-pumped and cw systems under high resolution

Richard A. Keller, Joe D. Simmons, and Donald A. Jennings
J. Opt. Soc. Am. 63(12) 1552-1555 (1973)

Reduction of Fluorescence Background in Raman Spectra by the Pulsed Raman Technique*

Perry Pappas Yaney
J. Opt. Soc. Am. 62(11) 1297-1303 (1972)

Quantitative detection of atomic absorption by intracavity dye-laser quenching

M. Maeda, F. Ishitsuka, M. Matsumoto, and Y. Miyazoe
Appl. Opt. 16(2) 403-406 (1977)

Design and Operation of a Tunable Continuous Dye Laser

S. A. Tuccio and F. C. Strome
Appl. Opt. 11(1) 64-73 (1972)