Enhancement of short-pulse recombination-pumped gain by soft-x-ray photoionization of the ground state

J. P. Apruzese, D. Umstadter

Research output: Contribution to journalArticle

Abstract

The gain achieved in lasing to the ground state following short-pulse field ionization by a pump laser is highly transient. It will usually persist for only tens of picoseconds because of the rapid filling and negligible emptying of the ground state. Employing a detailed atomic model of lasing in hydrogen, we show that the removal of ground-state population by an appropriate broadband ionizing radiation field can enhance and prolong the gain in such a laser.

Original languageEnglish (US)
Pages (from-to)443-446
Number of pages4
JournalJournal of the Optical Society of America B: Optical Physics
Volume13
Issue number2
DOIs
StatePublished - Feb 1996

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photoionization
ground state
lasing
augmentation
pulses
emptying
x rays
ionizing radiation
radiation distribution
lasers
pumps
broadband
ionization
hydrogen

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

Cite this

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abstract = "The gain achieved in lasing to the ground state following short-pulse field ionization by a pump laser is highly transient. It will usually persist for only tens of picoseconds because of the rapid filling and negligible emptying of the ground state. Employing a detailed atomic model of lasing in hydrogen, we show that the removal of ground-state population by an appropriate broadband ionizing radiation field can enhance and prolong the gain in such a laser.",
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