Abstract

The sharper instrumental profile of the multipassed Fabry-Perot etalon introduces distortions to Brillouin spectra which may differ considerably from those introduced by the single-pass etalon. The half-width at half-height of the observed profile is calculated for five-pass and three-pass spectrometers. Phonon spectral widths may be extracted from the graphs and appropriate relationships are presented. These calculations are valid for well aligned etalons when the phonon lineshape is Lorentzian and cover a wide range of instrumental and phonon spectral widths.

© 1977 Optical Society of America

Closed-form expressions to fit data obtained with a multipass Fabry–Perot interferometer

Hacène Boukari, E. D. Palik, and Robert W. Gammon
Appl. Opt. 34(1) 69-86 (1995)

Stable multipass Fabry-Perot interferometer: design and analysis

Chandrasekhar Roychoudhuri and Michael Hercher
Appl. Opt. 16(9) 2514-2520 (1977)

Tandem multipass Fabry-Perot interferometer for Brillouin scattering

J. G. Dil, N. C. J. A. van Hijningen, F. van Dorst, and R. M. Aarts
Appl. Opt. 20(8) 1374-1381 (1981)

Line-shape studies for single- and triple-pass Fabry–Perot interferometer systems

E. D. Palik, Hacène Boukari, and Robert W. Gammon
Appl. Opt. 34(1) 58-68 (1995)

Galatry profile convolved with the Fabry-Perot instrument function

David Goorvitch
Appl. Opt. 16(6) 1732-1735 (1977)