Infrared-to-visible CW frequency upconversion in Er3+-doped fluoroindate glasses

We report on efficient frequency upconversion in Er3+ -doped fluoroindate glasses. The process is observed under 1.48 µm laser diode excitation and results in the generation of strong blue (~407 nm), green (+ 550 nm), and red (~670 nm) radiation. The main mechanism that allows for upconversion appears to be the energy transfer among Er3+ ions in excited states. The results illustrate the large potential of this new class of glasses for photonic applications

Violet-blue emissions due to frequency up-conversion in Nd3+-doped fluoroindate glasses

We report the observation of intense frequency up-conversion in Nd3+-doped fluoroindate glasses pumped by the second harmonic of a cw mode-locked Nd : YAG laser. Mechanisms for generating the observed emissions are discussed