HF chemical lasing at higher vibrational levels

Abstract
HF lasing has been obtained from the P6(5) and P6(4) transitions as well as several P5 and P4 transitions of HF. Lasing from these high vibrational levels was produced by transverse pulsed discharges in mixtures of HI, He, and SF6 or SO2F2. The low bond energy of HI contributed to doubling the energy of laser pulses compared to the energy observed when H2 was substituted for HI. The HF laser frequencies were also measured for other fuels with low RH bond energies.
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