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

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

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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 (US)
Pages (from-to)1147-1149
Number of pages3
JournalApplied Physics B: Lasers and Optics
Issue number6
StatePublished - Jun 1 1999

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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