Abstract

Detecting the stimulated light is suggested rather than collecting the spontaneous emission due to radiative relaxation of the specie excited by a tuned laser pulse. A method is proposed to deviate a part of this stimulated emission from transmitted light under near saturation excitation conditions. Application to local and instantaneous concentration measurement is discussed.

© 1979 Optical Society of America

Direct measurement of OH local concentration in a flame from the fluorescence induced by a single laser pulse

D. Stepowski and M. J. Cottereau
Appl. Opt. 18(3) 354-356 (1979)

Hydroxyl and its concentration profile in methane–air flames

J. H. Bechtel and R. E. Teets
Appl. Opt. 18(24) 4138-4144 (1979)

Saturable absorber properties of a laser dye; stimulated propagation of the pump flux

P. R. Hammond
Appl. Opt. 18(4) 536-539 (1979)

Coherent optical transient spectroscopy in flames

John W. Daily
Appl. Opt. 18(3) 360-367 (1979)

Temperature measurements of the hydroxyl radical and molecular nitrogen in premixed, laminar flames by laser techniques

J. H. Bechtel
Appl. Opt. 18(13) 2100-2106 (1979)