No abstract available.
A. M. Tkachuk, I. K. Razumova, A. A. Mirzaeva, A. V. Malyshev, and V. P. Gapontsev, "Population of the Er3 levels in LiY1-xErxF4 crystals (x=0.003-1) with continuous pumping with the radiation of InGaAs laser diodes," J. Opt. Technol. 67, 851- (2000)