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 language | English |
|---|---|
| Pages (from-to) | 1147-1149 |
| Number of pages | 3 |
| Journal | Applied Physics B: Lasers and Optics |
| Volume | 68 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 1999 |