Abstract

Design characteristics and performance are described for a low-temperature multiple-reflection cell used with a laser diode spectrometer. The optical pathlength can be varied from 0.04 km to 1.5 km in the temperature controlled cell from 160 K to 300 K. Examples are presented to illustrate pressure broadening in the 16 μm N₂O band and to indicate some high resolution absorption measurements of rotational manifolds in the ν₄ band of SF₆ and an application to the analysis of the Q-branch of the 2ν₄–ν₄ hot band transition in SF₆.

© 1978 Optical Society of America

High sensitivity pollution detection employing tunable diode lasers

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High sensitivity point monitoring of atmospheric gases employing tunable diode lasers

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