The Cryogenic CO-Laser, Excited By A Photoionization On-Self-Sustained Discharge

G. V. Abrosimov; V. A. Gurashvili; A. T. Rakhimov; V. B. Saenko; V. P. Tyashev; F. I. Vysikailo

doi:10.1117/12.950511

20 June 1989 The Cryogenic CO-Laser, Excited By A Photoionization On-Self-Sustained Discharge

G. V. Abrosimov, V. A. Gurashvili, A. T. Rakhimov, V. B. Saenko, V. P. Tyashev, F. I. Vysikailo

Proceedings Volume 1031, 7th Intl Symp on Gas Flow and Chemical Lasers; (1989) https://doi.org/10.1117/12.950511
Event: 7th International Symposium on Gas Flow and Chemical Lasers, 1988, Vienna, Austria

Abstract

The CO-laser is generated by exciting CO:N2:He:(02:C2H4) gas miksture cooled down to T= 110°K, N= 0.5 Amaga. The photoionization discharge is initiated by a short UV pulse of wavelength < 100 nm and duration t~ 1 μs at the reduced electric fill E/N < 3.3 x10-16 V.sm2. The energy consumed by direct photoionization of the (O2:C2H4) dope is 30% of the energy contribution to the volume discharge. The optimization of the photoionization pumping system parameters is examined. The dynamics of the recovery of optical homogeneity of active medium after the photoionization and discharge pulses is studied. The methods for improving the energy effectiveness of the photoionization CO-laser are proposed. The generation duration is shown to be adjustable within 2-600 μs, depending on the choice of the gas medium composition. The absence of He in the gas madium deteriorates but little the energy characteristics of the photoionization CO-laser. Effective excitation of the CO-CO2 laser media at temperatures of up to 145°K has been demonstrated to be in principle feasible.

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G. V. Abrosimov, V. A. Gurashvili, A. T. Rakhimov, V. B. Saenko, V. P. Tyashev, and F. I. Vysikailo "The Cryogenic CO-Laser, Excited By A Photoionization On-Self-Sustained Discharge", Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); https://doi.org/10.1117/12.950511

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