X2Σ→B2Σ absorption band of HgBr

Optically pumped 502-nm laser

D. P. Greene, K. P. Killeen, James Gary Eden

Research output: Contribution to journalArticle

Abstract

The X2Σ+1/2→B 2Σ+1/2 absorption band of HgBr has been observed in the afterglow of a pulsed Ne-N2-HgBr2 discharge. Peaking in the ultraviolet (UV) near 350 nm, this continuum degrades slowly to the red and at 410 nm the absorption coefficient is 30% of its maximum value. Upon exciting the X→B band with an XeF (351 nm) or frequency tripled Nd:YAG (355 nm) laser, intense lasing is observed in the blue-green (λ∼502 nm). For λpump=351 nm, the energy conversion efficiency (UV to green) is 22% which corresponds to a photon conversion efficiency of 32%. The quantum efficiency for this four level system is 71%.

Original languageEnglish (US)
Pages (from-to)1175-1177
Number of pages3
JournalApplied Physics Letters
Volume48
Issue number18
DOIs
StatePublished - Dec 1 1986

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energy conversion efficiency
afterglows
yttrium-aluminum garnet
lasing
quantum efficiency
absorptivity
pumps
continuums
absorption spectra
photons
lasers

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

X2Σ→B2Σ absorption band of HgBr : Optically pumped 502-nm laser. / Greene, D. P.; Killeen, K. P.; Eden, James Gary.

In: Applied Physics Letters, Vol. 48, No. 18, 01.12.1986, p. 1175-1177.

Research output: Contribution to journalArticle

Greene, D. P. ; Killeen, K. P. ; Eden, James Gary. / X2Σ→B2Σ absorption band of HgBr : Optically pumped 502-nm laser. In: Applied Physics Letters. 1986 ; Vol. 48, No. 18. pp. 1175-1177.
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