Er3+-and Nd3+-doped KLiYF5 as potential gain media for GaAlAs diode laser pumped systems

    Authors

    J. F. H. Nicholls; T. A. Murray; D. L. Russell; D. Armstrong; B. H. T. Chai; K. Holliday;B. Henderson

    Comments

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    Abbreviated Journal Title

    Pure Appl. Opt.

    Keywords

    ROOM-TEMPERATURE; CRYSTALS; SPECTROSCOPY; EMISSION; Optics

    Abstract

    Single crystals of Er3+- and Nd3+-doped KLiYF5 have been grown by top-seeded solution growth. Large concentrations of rare-earth substituents on the Y3+ Site are possible in this crystal on account of the orientation and packing of adjacent Y-F-8 coordination polyhedra. Odd-parity distortions of the rare-earth site result in large absorption and emission cross sections for both Er3+ and Nd3+. The absorption, emission and lifetime spectroscopy of Er3+:KLiYF5 are reported. Applications of Er3+:KLiYF5 and Nd3+:KLiYF5 as gain media in GaAlAs diode-pumped laser devices are discussed in terms of the spectroscopy of these materials. Preliminary experiments connected with such applications are reported. Whilst pumping the materials close to 800 nm, low-threshold, high slope efficiency continuous wave laser action was achieved at 1.05 mu m in Nd3+:KLiYF5 and strong upconversion photoluminescence close to 550 nm was observed in Er3+:KLiYF5.

    Journal Title

    Pure and Applied Optics

    Volume

    7

    Issue/Number

    1

    Publication Date

    1-1-1998

    Document Type

    Article

    Language

    English

    First Page

    83

    Last Page

    97

    WOS Identifier

    WOS:000071910300012

    ISSN

    0963-9659

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