Frequency up-conversion of a discharge pumped molecular fluorine laser by stimulated Raman scattering in H2

Masayuki Kakehata, Etsu Hashimoto, Fumihiko Kannari, Minoru Obara

    Research output: Contribution to journalConference article

    2 Citations (Scopus)

    Abstract

    By exciting 10-atm He/F2 gas mixtures by electric discharge at 66MW/cm3, a specific output energy of 2.9J/1 (83mJ) has been obtained in the F2 laser (157.6nm). To extend an available laser wavelength region with high output laser energies in the vacuum ultraviolet, frequency conversion of the laser radiation by stimulated Raman scattering in H2 has been demonstrated for the first time. The laser energy focused into a Raman cell was about 10mJ (22ns FWHM), which corresponds to the focused intensity of 141MW/cm2. At H2 pressure of 5atm, 1st and 2nd Stokes lines (168.6nm, 181.4nm) and 1st anti-Stokes line (147.9nm) were observed. The energy conversion efficiency was approx. 10% for the 1st Stokes line, approx.2% for the 2nd Stokes line, and approx.0.8% for the 1st anti-stokes line at a 10atm H2.

    Original languageEnglish
    Pages (from-to)185-189
    Number of pages5
    JournalProceedings of SPIE - The International Society for Optical Engineering
    Volume1397
    Issue numberpt 1
    Publication statusPublished - 1991 Jan 1
    Event8th International Symposium on Gas Flow and Chemical Lasers Part 1 (of 2) - Madrid, Spain
    Duration: 1990 Sep 101990 Sep 14

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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