Ia. Grishin et al., CONVERSION OF INFRARED RADIATION INTO VISIBLE IN ZBLAN GLASS WITH 3-COMPONENT DOPING BY RARE-EARTH ELEMENTS, Technical physics letters, 23(1), 1997, pp. 70-72
Experimental results are presented that lead to the conclusion that ne
w laser systems and elements of fiber-optic communication lines can in
principle be made on the basis of the material studied here, which ha
ve new spectroscopic characteristics. The effect studied in this paper
is the following: an increase in the luminescence efficiency with fre
quency upconversion for three-element doping; this is a novel finding
and has no analog. (C) 1997 American Institute of Physics. [S1063-7850
(97)02401-4].