Study of a helium laser pumped by a pulsed electron beam generated in an open discharge

A laser on the self-contained helium 2{sup 1}P{sub 1}{sup 0} - 2{sup 1}S{sub 0} transition pumped by a pulsed electron beam generated in an open discharge is simulated and experimentally studied. Lasing without decreasing the pulse energy in a tube of diameter 31 mm was observed up to the pump pulse...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2008-09, Vol.38 (9), p.823-828
Main Authors: Bel'skaya, E V, Bokhan, P A, Zakrevskii, D E
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLIFICATION
BEAMS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DISTRIBUTION
EFFICIENCY
ELECTRIC FIELDS
ELECTRICAL PUMPING
ELECTRON BEAM PUMPING
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
ELEMENTS
ENERGY LEVELS
FLUIDS
FREQUENCY RANGE
GASES
HELIUM
KHZ RANGE
LASERS
LEPTON BEAMS
NONMETALS
PARTICLE BEAMS
POWER SUPPLIES
PULSES
PUMPING
QUANTUM EFFICIENCY
RARE GASES
SIMULATION
SPATIAL DISTRIBUTION
TUBES
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Summary:A laser on the self-contained helium 2{sup 1}P{sub 1}{sup 0} - 2{sup 1}S{sub 0} transition pumped by a pulsed electron beam generated in an open discharge is simulated and experimentally studied. Lasing without decreasing the pulse energy in a tube of diameter 31 mm was observed up to the pump pulse repetition rate of 10 kHz determined by the parameters of a power supply. Dynamics of the electric field in an accelerating gap and populations of the working levels of helium are calculated. The radiation power calculated in accordance with its radial distribution measured in the saturated amplification regime is 7.85 times higher than that in the lasing regime. The practical laser efficiency of 0.056% is achieved for the quantum efficiency of 0.7%. (active media. lasers)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2008v038n09ABEH013516