Pulsed H2 – F2 laser with simultaneous lasing on rotational and vibrational—rotational transitions

Abstract

The possibility of operation of a pulsed chemical H2 – F2 laser on purely rotational transitions with simultaneous lasing on vibrational – rotational transitions is theoretically investigated. The lasing of a hydrogen—fluorine laser (mixture pressure 1.1 atm) on both v,j – 1 → v – 1,j (j=2 – 20) and v,j → v,j – 1 (j = 12 – 19) transitions has been modelled taking into account the resonant one- and two-quanta vibrational – rotational processes. The calculated specific energy extraction for purely rotational transitions reaches 0.3–0.5 J L-1 at j=18 and 19 (wavelength 15.5–14 μm) and 0.4–0.7 J L-1 at j=13 and 14 (wavelength 21–19 μm).