SPECTROSCOPY AND CW 2-PHOTON UP-CONVERSION IN TM3-DOPED ZNCL2-BASED GLASS()

In this paper, the preparation, spectroscopic characterization and opt ical up-conversion properties of Tm3+-doped ZnCl2-based glass are pres ented. The particular arrangement of the Tm3+ energy levels, combined with the low phonon energy of the glass, yields two continuous two-pho ton up-conversion processes from infrared light (795 nm) to blue (483 nm) and red (653 nm and 664 nm) light, and from red (707 nm) to ultrav iolet (378 nm) light, respectively.