The growth of high optical quality Tm : Ho : YVO4 single laser crystals by
the floating zone method is reported. The relationship between crystal qual
ity and growth conditions was studied and the optimum method was obtained.
The absorption and fluorescence spectra were measured at room temperature a
nd the influence of concentration of Tm3+ and Ho3+ On the emissions is also
discussed. (C) 2000 Elsevier Science B.V. All rights reserved.