Brief Communications

Investigation of the feasibility of generation of short radiation pulses in an atmospheric-pressure chemical H₂–F₂ laser

A. S. Bashkin, V. A. Zolotarev, L. V. Kulakov, M. P. Frolov


Abstract: A study was made of the dependence of the duration of emission from an atmospheric-pressure H₂–F₂ laser on the composition of the mixture and on the degree of initiation. The initiation source was a neodymium glass laser system with a harmonic generator emitting 10-nsec pulses of the third and fourth harmonics which reached energies of 5 and 2J, respectively. The duration of emission from the H₂–F₂ laser was 45 nsec when the initial concentration of the fluorine atoms was [F]_o=3×10¹⁷cm^–3 and the composition of the mixture was F₂:O₂:H₂:He=300:30:100:320 Torr. The divergence of the radiation emitted by this chemical laser was 1.1 mrad when the specific output energy was 40J/liter; this divergence was only 1.6 times greater than the diffraction limit.

UDC: 621.373.826.038.823

PACS: 42.65.Re, 42.55.Ks, 42.65.Ky, 42.60.Jf

Received: 10.09.1985

 English version: Soviet Journal of Quantum Electronics, 1986, 16:5, 701–703

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