The effect of hydrogen additive on population densities in the afterglow of barium vapour lasers

Richard P. Mildren, Daniel J. W. Brown, Robert J. Carman, James A. Piper

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The effects of hydrogen additive on the performance and detailed kinetics of a pulsed barium vapour laser operating with burst-mode excitation are reported. Time resolved density measurements of significant atomic and ionic barium states in pure neon buffer gas and in a NeH2 mixture show that the plasma relaxes between excitation pulses much more rapidly when hydrogen is present. The observed improvement in laser performance (65% increase in output pulse energy) under steady state (i.e. end of burst) conditions with hydrogen additive is directly attributable to improved pre-pulse conditions, resulting from cumulative effects of the enhanced plasma relaxation. The results and conclusions are relevant to other cyclic pulsed metal vapour lasers.

LanguageEnglish
Pages112-120
Number of pages9
JournalOptics Communications
Volume120
Issue number1-2
DOIs
Publication statusPublished - 1 Oct 1995

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Barium
afterglows
barium
Hydrogen
Vapors
vapors
Lasers
bursts
hydrogen
metal vapor lasers
pulses
Neon
lasers
Plasmas
Laser modes
Time measurement
neon
excitation
Laser pulses
pulsed lasers

Cite this

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abstract = "The effects of hydrogen additive on the performance and detailed kinetics of a pulsed barium vapour laser operating with burst-mode excitation are reported. Time resolved density measurements of significant atomic and ionic barium states in pure neon buffer gas and in a NeH2 mixture show that the plasma relaxes between excitation pulses much more rapidly when hydrogen is present. The observed improvement in laser performance (65{\%} increase in output pulse energy) under steady state (i.e. end of burst) conditions with hydrogen additive is directly attributable to improved pre-pulse conditions, resulting from cumulative effects of the enhanced plasma relaxation. The results and conclusions are relevant to other cyclic pulsed metal vapour lasers.",
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The effect of hydrogen additive on population densities in the afterglow of barium vapour lasers. / Mildren, Richard P.; Brown, Daniel J. W.; Carman, Robert J.; Piper, James A.

In: Optics Communications, Vol. 120, No. 1-2, 01.10.1995, p. 112-120.

Research output: Contribution to journalArticleResearchpeer-review

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