Le Journal de Physique Colloques

APPLICATIONS OF DEGENERATE FOUR-WAVE MIXING TO HIGH RESOLUTION MOLECULAR SPECTROSCOPY AT 10.6 µm

Jean-Luc Boulnois

Published Mar 1, 1983• 0 citations

Abstract

CW phase conjugation on the ν3 vibrational bands of SF6 and OsO4 is demonstrated as a means of investigation in high resolution spectroscopy through resonant degenerate four-wave mixing at 10.6 µm by using a stable low power CO2 laser operating on the P(18), P(16), P(12) lines respectively. Peak reflectivities of 3.8 10-3 are measured in SF6. They only reach 0.34 10-3 in OsO4. Phase conjugate spectra with 2 MHz, namely sub-Doppler resolutions, are compared with simultaneous recordings of the saturated-absorption spectra over a 80 MHz bandwidth. The saturation splitting encountered on a one-photon transition in SF6 is also analysed in terms of pressure broadening and pump imbalance.

DOI: 10.1051/jphyscol:1983216

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