Abstract
We present results from a study of an optically pumped hydrogen fluoride laser. Rotation–vibration transitions within the (2,0) band near 1.3 μm are pumped, and both amplified spontaneous emission (ASE) and laser oscillation are observed on (2,1) band transitions near 2.7 μm. Longitudinal and transverse pumping schemes are discussed. We also have pumped the (3,0) band and observed ASE on both the (3,2) and (2,1) bands. This system serves as a prototype for other mid-infrared diatomic and polyatomic lasers based upon overtone pumping.
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