Stimulated emission at an orange wavelength from cryogenically cooled Pr3+-doped LiYF4 and y3Al5O 12

Kohei Hashimoto, Fumihiko Kannari

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    Abstract

    Efficient stimulated emissions at an orange wavelength (604 nm) are obtainable from a cryogenically cooled Pr:LiYF4 crystal pumped by a 444 nm pulse laser. The red lasing at 639 nm, which is dominant at room temperature, decreases as the crystal temperature decreases. The orange laser power exceeds the red laser at temperatures lower than 180K. At 2OK, we obtain laser oscillation without an external cavity from a 10-mm-long crystal. Such efficient lasing is ascribed to the substantial absorption reduction at 604 nm at low temperatures. We can also obtain the orange (616 nm) laser from a Pr:Y 3Al5O12(YAG) crystal at < 100 K.

    Original languageEnglish
    Pages (from-to)589-592
    Number of pages4
    JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
    Volume46
    Issue number2
    DOIs
    Publication statusPublished - 2007 Feb 8

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    Keywords

    • LiYF
    • Solid-state laser
    • Spectroscopy
    • Trivalent-praseodimium
    • Visible laser
    • YAG

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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