Slope efficiency of up to 73% for Yb: Ca4YO(BO3)3 crystal laser pumped by a laser diode

H. Zhang*, X. Meng, Pu Wang, L. Zhu, X. Liu, R. Cheng, J. Dawes, P. Dekker, S. Zhang, L. Sun

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    66 Citations (Scopus)

    Abstract

    Yb:Ca4YO(BO3)3 (Yb:YCOB) crystal with good quality and large size has been grown by the Czochralski method. The polarization absorption and fluorescence spectra have been measured. The laser action of the Yb:YCOB crystal has been demonstrated when it is pumped by a fiber-coupled laser diode (LD) at the wavelength of 976.4 nm. The pumping threshold is 55 mW, the light-light conversion efficiency is 58.7%, and a slope efficiency of up to 73% is thus calculated.

    Original languageEnglish
    Pages (from-to)1147-1149
    Number of pages3
    JournalApplied Physics B: Lasers and Optics
    Volume68
    Issue number6
    DOIs
    Publication statusPublished - Jun 1999

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