Computer modelling of the pulsed DF-HBr optical resonance transfer laser (ORTL)

Michail A. Azarov; V. A. Iskhakov; V. I. Mashendzhinov; V. E. Revich; A. P. Vorobjev

doi:10.1117/12.270141

4 April 1997 Computer modelling of the pulsed DF-HBr optical resonance transfer laser (ORTL)

Michail A. Azarov, V. A. Iskhakov, V. I. Mashendzhinov, V. E. Revich, A. P. Vorobjev

Proceedings Volume 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (1997) https://doi.org/10.1117/12.270141
Event: XI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference, 1996, Edinburgh, United Kingdom

Abstract

The aim of the present investigation is to forecast a principle opportunity of a pulsed DF to HBr laser frequency conversion and to evaluate an efficiency of that process. Computer modeling of the pulsed DF-HBr optical resonance transfer laser (DF-HBr ORTL) is performed and output characteristics of the system are predicted. The ORTL gas mixture contained DF at 10 torr, HBr at 10 torr and He at 100 torr. It was considered as a multiline pumping. The pump radiation flux was varied from 0.02 to 2 J/cm². Depending on conditions the length of an ORTL gas media must be between 2 and 30 cm at using the longitudinal pump geometry. When DF- HBr gas mixture is pumped by a pulsed flash-initiated chemical DF laser, it is feasible to produce HBr lasing with a specific output energy over 100 mJ/cm³ and efficiency of 40% relative to absorbed radiation energy. When used for pumping, a pulsed electrical discharge chemical DF laser can provide HBr lasing with specific energy up to 20 mJ/cm³ and efficiency up to 25%. Therefore one will anticipate that a highly efficient laser system of the 4.2-5.2 micrometer spectral region can be developed.

Citation Download Citation

Michail A. Azarov, V. A. Iskhakov, V. I. Mashendzhinov, V. E. Revich, and A. P. Vorobjev "Computer modelling of the pulsed DF-HBr optical resonance transfer laser (ORTL)", Proc. SPIE 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (4 April 1997); https://doi.org/10.1117/12.270141

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KEYWORDS

Chemical lasers

Pulsed laser operation

Laser optics

Deuterium fluoride lasers

Modeling

Molecules

Energy efficiency

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