Abstract

We describe the characteristics of a cw HF chemical laser used for molecular-beam scattering studies. Unlike with most such lasers, a complete population inversion is achieved, resulting in ~100 mW of single-line output even for some R-branch transitions. The laser emission shows a prominent Lamb dip and can achieve high spectral resolution (≲ 15 MHz). For inelastic scattering studies, improved signal stability and intensity has been attained by lowering the resolution, thereby better matching the laser emission and molecular-beam absorption linewidths. Preliminary measurements of rotationally inelastic differential cross sections for HF scattered into J′ = 1, 2, 3 by Ar are also presented.

© 1989 Optical Society of America

Effect of velocity on saturation behavior of HF molecular beams

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