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

The possibility of operation of a pulsed chemical H-2 - F-2 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 upsilon, j - 1 -> upsilon - 1, j (j = 2 - 20) and upsilon, j -> upsilon, 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 mu m) and 0.4-0.7 J L-1 at j = 13 and 14 (wavelength 21-19 mu m).