Upconversion (UC) refers to nonlinear optical processes in which the sequential absorption
of two or more photons leads to the emission of light at shorter wavelength than the …

Abstract Mit Upconversion (UC, Aufwärtskonversion) werden nichtlineare optische Prozesse
beschrieben, bei denen die aufeinander folgende Absorption von zwei oder mehr Photonen …

This volume presents a complete and thorough examination of advances in the
instrumentation, evaluation, and implementation of UV technology for reliable and efficient …

A survey is given of experimental phase equilibrium data from binary systems of alkali metal
fluorides (MF) and lanthanide fluorides (RF3). The stability of compounds and …

K2YF5 crystals doped Sm3+ ions were synthesized under hydrothermal condition. The
absorption, luminescence spectra, and lifetimes of K2YF5: Sm3+ were measured at room …

Inorganic fluoride single crystals feature large bandgaps, very wide optical transmittance
ranges from vacuum-ultraviolet (VUV) to mid-IR wavelength regions, lower refractive indices …

New possibilities have been investigated for recently developed solid-state tunable
ultraviolet (UV) laser materials such as Ce/sup 3+/ion-activated LuLiF/sub 4/(LLF) and …

Vacuum-ultraviolet (VUV) laser radiation at 172 nm has been obtained from a solid-state
LaF_3: Nd^ 3+-based laser pumped by a pulsed-discharge molecular F_2 laser at 157 nm …

Hydrothermal crystal growth offers a complementary alternative to many of the classical
techniques used to synthesise new materials and grow bulk crystals for various applications …

Crystals of Er 3+ doped K 2 YF 5 and K 2 YbF 5 as well as stoichiometric K 2 ErF 5 have
been grown under hydrothermal conditions. Peculiarities of Er 3+ luminescence in these …