Kinetics of an oxygen – iodine active medium with iodine atoms optically pumped on the²P_1/2–²P_3/2transition

Abstract

The kinetics of the processes occurring in an O 2 -I 2 -He -H 2 O gas flow in which photodissociation of molecular iodine at a wavelength close to 500 nm and excitation of atomic iodine on the 2 P 1/2 -2 P 3/2 transition by narrow-band radiation near 1315 nm are implemented successively has been analysed. It is shown that implementation of these processes allows one to form an oxygen -iodine medium with a high degree of dissociation of molecular iodine and a relative content of singlet oxygen O 2 (a 1 D) exceeding 10 %. Having formed a supersonic gas flow with a temperature ~100 K from this medium, one can reach a small-signal gain of about 10 -2 cm -1 on the 2 P 1/2 -2 P 3/2 transition in iodine atoms. The specific power per unit flow cross section in the oxygen -iodine laser with this active medium may reach ~100 W cm -2 .

Resonator to Laser Cavity Decoupling Interface for Chemical Oxygen Iodine Laser

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