Abstract

A description is presented of an experimental method of obtaining Raman spectra of low-pressure gases under high resolution. The technique utilizes a single-mode argon laser, a multiple-pass Raman cell located inside the laser cavity, and baked Kodak IIIa-J photographic plates. A method is described which uses the single-mode Fabry–Pérot étalon to change the wavelength of the exciting line so as to compensate for changes of the dispersion of the spectrograph brought about by variations of barometric pressure. Rotational Raman spectra of heavy polyatomic molecules can now be photographed at room temperature with a resolution determined by the pressure and Doppler broadening of spectrum lines.

© 1972 Optical Society of America

Hypersensitization by baking of certain Kodak photographic prates for use in high-resolution Raman spectroscopy

K. S. Jammu and H. L. Welsh
Appl. Opt. 15(2) 423-426 (1976)

High-Resolution Raman Spectroscopy of Gases with cw-Laser Excitation*

Alfons Weber, Sergio P. S. Porto, Leonard E. Cheesman, and Joseph J. Barrett
J. Opt. Soc. Am. 57(1) 19-28 (1967)

Raman Spectroscopy of Gases

H. L. Welsh, E. J. Stansbury, J. Romanko, and T. Feldman
J. Opt. Soc. Am. 45(5) 338-343 (1955)

Method for Stabilizing the Frequency of an Unmodulated Laser Output*

Keiichi Tanaka
J. Opt. Soc. Am. 62(1) 24-29 (1972)

Brillouin Scattering from Some Low-Temperature Liquids

L. Y. Wong and A. Anderson
J. Opt. Soc. Am. 62(9) 1112-1116 (1972)