Correction of brillouin linewidths measured by multipass fabry-perot spectroscopy

S. M. Lindsay, S. Burgess, I. W. Shepherd

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)1404-1407
Number of pages4
JournalApplied Optics
Issue number5
StatePublished - May 1977
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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