Efficient lasing in mixtures of helium and fluorine in diffuse discharges formed by runaway electrons

The parameters of stimulated lasing in diffuse discharges formed in mixtures of helium and fluorine in a strongly inhomogeneous electric field are investigated. Lasing is obtained in the visible and VUV spectral regions on the transitions of fluorine atoms and molecules. It is shown that lasing in H...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 50; no. 10; pp. 900 - 903
Main Authors Tarasenko, V.F., Panchenko, A.N., Kozhevnikov, V.V.
Format Journal Article
LanguageEnglish
Published Bristol Kvantovaya Elektronika, Turpion Ltd and IOP Publishing 01.10.2020
IOP Publishing
Subjects
ATOMIC AND MOLECULAR PHYSICS
diffuse discharge
Discharge
effective VUV generation
EFFICIENCY
ELECTRIC FIELDS
FLUORINE
HELIUM
Homogeneity
inhomogeneous electric field
Inhomogeneous electric fields
LASERS
Lasing
MIXTURES
runaway electrons
WAVELENGTHS
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Summary:The parameters of stimulated lasing in diffuse discharges formed in mixtures of helium and fluorine in a strongly inhomogeneous electric field are investigated. Lasing is obtained in the visible and VUV spectral regions on the transitions of fluorine atoms and molecules. It is shown that lasing in He - F2 mixtures at a wavelength of 157 nm continues for several half-periods of the discharge current. Due to the homogeneity of the diffuse discharge, the maximum lasing efficiency of the F2 laser is 0.15 %, which corresponds to the efficiency of this type of lasers pumped by pre-ionised transverse volume discharges.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL17384