Simulations of recombination lasing in Ar7+ driven by optical field ionization in a capillary discharge waveguide

D. J. Spence, S. M. Hooker*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We present calculations of the small-signal gain coefficient, gain length, and output energy of a recombination laser in Ar7+ driven by optical field ionization. Simulations are presented for both 400 and 800 nm pump radiation, and for two targets containing mixtures of argon and hydrogen: a gas cell, and a gas-filled capillary discharge waveguide. Extremely high values for the small-signal gain coefficient are calculated for the 4s-3p transition at 23.2 nm using a pump wavelength of 400 nm for both the gas cell and waveguide. Operation in the waveguide is predicted to greatly increase the XUV laser output owing to a large increase of the gain length. The calculations also show that use of the waveguide allows significant single-pass gain to be achieved even with pump radiation of 800 nm wavelength.

Original languageEnglish
Pages (from-to)501-513
Number of pages13
JournalOptics Communications
Volume249
Issue number4-6
DOIs
Publication statusPublished - 15 May 2005
Externally publishedYes

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