Abstract

A frequency-stabilized CO2 laser using the saturated fluorescence technique was constructed. Stainless-steel rods were used to support the cavity, and a thermoelectrically cooled PbSe detector monitored the 4.3-μm fluorescence from a low-pressure CO2 absorption cell. Stabilization of the CO2 laser at the center of the saturation dip was achieved with the absorption cell inside or outside the laser cavity. The frequency stability is estimated to be better than 3.5 × 10−9.

© 1988 Optical Society of America

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