Tm, Ho co-doped alumino-zirco-fluoride (AZF) glass is an attractive candidate for an optical pre-amplifier around two microns. In Tm, Ho doped materials, however, upconversion from the upper laser levels of Tm /sup 3/F/sub 4/ and Ho /sup 5/I/sub 7/ occurs which reduces the gain coefficient and efficiency. Therefore it is important to determine the upconversion rate constants in order to estimate optimum performance of such a Tm, Ho: AZF glass pre-amplifier. In this work, the upconversion rate constants were determined under high average power pumping conditions by measuring gain coefficients and an appropriate comparison made from a simple rate equation model.


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    Title :

    Upconversion studies in Tm, Ho co-doped alumino-zirco-fluoride glass


    Contributors:
    Doshida, M. (author) / Teraguchi, K. (author) / Obara, M. (author) / Ota, K. (author) / Saito, H. (author)

    Published in:

    Proceedings of LEOS'94 ; 2 ; 427-428 vol.2


    Publication date :

    1994-01-01


    Size :

    157271 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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