Effect of SF{sub 6} and NF{sub 3} additives on UV and IR lasing in nitrogen

The lasing regimes of nitrogen laser on the C{sup 3{Pi}}{sub u} - B{sup 3{Pi}}{sub g} transition with a high-energy long laser pulse under pumping by a transverse discharge in N{sub 2} - SF{sub 6} (NF{sub 3}) mixtures from generators with a semiconductor opening switch is studied. Laser pulses with...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2011-04, Vol.41 (4)
Main Authors: Genin, D E, Panchenko, Aleksei N, Tarasenko, Viktor F, Tel'minov, A E
Format: Article
Language:English
Subjects:
ADDITIVES
ATOMIC AND MOLECULAR PHYSICS
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFRARED RADIATION
LASERS
MATERIALS
NITROGEN
NITROGEN COMPOUNDS
NITROGEN FLUORIDES
NONMETALS
OPTICAL PUMPING
PULSES
PUMPING
RADIATIONS
SEMICONDUCTOR MATERIALS
SULFUR COMPOUNDS
SULFUR FLUORIDES
SWITCHES
ULTRAVIOLET RADIATION
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Summary:The lasing regimes of nitrogen laser on the C{sup 3{Pi}}{sub u} - B{sup 3{Pi}}{sub g} transition with a high-energy long laser pulse under pumping by a transverse discharge in N{sub 2} - SF{sub 6} (NF{sub 3}) mixtures from generators with a semiconductor opening switch is studied. Laser pulses with two peaks and controlled delay between these peaks are obtained. It is shown that the time interval between the peaks may exceed 50 ns for N{sub 2} - NF{sub 3} mixtures. The conditions for obtaining effective UV lasing with a laser pulse width of more than 50 ns at the base level are determined. A possibility of depopulating the lower level of the C{sup 3{Pi}}{sub u} - B{sup 3{Pi}}{sub g} transition by induced transitions in the first positive B{sup 3{Pi}}{sub g} - A{sup 3{Sigma}}{sub u}{sup +} system is shown; this process makes it possible to expand the pulse to 100 ns at {lambda} = 337.1 nm. The highest lasing energy and power in the IR and UV spectral ranges are obtained for nitrogen lasers with spark preionisation. (lasers)
ISSN:1063-7818
DOI:10.1070/QE2011V041N04ABEH014402