Abstract
The Fowler-Sung profile predicts that a nonzero mass ratio (m/M) of perturber to emitter atoms has a narrowing effect with respect to the conventional Voigt line shape. In this paper, two analytic approximations to the Fowler-Sung profile are given which give absolute errors between 0.0001 for m/M close or equal to zero and 0.01 for high values of m/M. Both approximations are used to develop procedures for analyzing Fowler-Sung profiles by means of nonlinear least-squares fitting. Moreover, a function is proposed as an analytic approximation to profile measured by a Fabry-Perot interferometer, and the corresponding technique of analysis is discussed.
© 1984 Optical Society of America
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Eusebio Bernabeu, J. J. Trujillo, and J. M. Alvarez, "Analytic approximations to the Fowler-Sung line shape: errata," Appl. Opt. 23, 4155-4163 (1984)https://opg.optica.org/ao/abstract.cfm?uri=ao-23-22-4155
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