Room-temperature operation of a para-H2 rotational Raman laser

Abstract
We have successfully demonstrated high‐power operation of a para‐H2 rotational Raman laser at room temperature. A photon conversion efficiency of 60% was obtained with a 10.6‐μm CO2 pump energy of 4.3 J, giving 0.85 J in the first Stokes pulse at 17.0 μm. Transient effects observed under room‐temperature conditions are also reported.

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