Transient absorption and its influence on energy extraction in a discharge-pumped F2 laser

M. Kakehata, Y. Ueno, K. Tamura, F. Kannari

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    Small-signal transient absorption of a discharge-pumped F2 laser (157.6 nm) medium was measured by using a Raman-shifted F2 laser (168.6 nm). The small-signal total absorption was obtained for 6 atm laser media at an excitation rate of ∼26 MW/cm3, where a small-signal net gain was independently measured to ∼35%/cm, as the sum of a transient absorption of ∼2.5%/cm and a stationary absorption of ∼0.5%/cm. In spite of the relatively large gain-to-loss ratio a significantly low maximum laser intensity of ∼2 MW/cm2, which gives zero extraction efficiency in the F2 laser medium, measured in heavily saturated F2 laser amplification experiments, suggests that the energy extraction is limited by additional absorption.

    Original languageEnglish
    Pages (from-to)1304-1310
    Number of pages7
    JournalJournal of Applied Physics
    Volume75
    Issue number3
    DOIs
    Publication statusPublished - 1994 Dec 1

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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