Laser performance investigation of a new UV active media LiY 0,3Lu0,7F4:Ce3+ and LiY 0,3Lu0,7F4:Ce3++Yb3+

We show that the LiY0,3Lu0,7F4:Ce 3+ and LiY0,3Lu0,7F4:Ce 3++Yb3+ crystals are promising active media of UV spectral range with low-threshold lasing (30-90 mJ/cm2). Due to crystal-chemical approach (additional doping by ions Yb3+) we obtained the effect of suppression of spurious photodynamic processes. The active medium LiY0,3Lu0,7F4: Ce3++ Yb3+ combines properties of saturable amplifier and oscillator with small saturation energy, and promising to generate pulses of ultrashort duration in the UV spectrum. © Published under licence by IOP Publishing Ltd

Laser performance investigation of a new UV active media LiY 0,3Lu0,7F4:Ce3+ and LiY 0,3Lu0,7F4:Ce3++Yb3+

We show that the LiY0,3Lu0,7F4:Ce 3+ and LiY0,3Lu0,7F4:Ce 3++Yb3+ crystals are promising active media of UV spectral range with low-threshold lasing (30-90 mJ/cm2). Due to crystal-chemical approach (additional doping by ions Yb3+) we obtained the effect of suppression of spurious photodynamic processes. The active medium LiY0,3Lu0,7F4: Ce3++ Yb3+ combines properties of saturable amplifier and oscillator with small saturation energy, and promising to generate pulses of ultrashort duration in the UV spectrum. © Published under licence by IOP Publishing Ltd

Laser performance investigation of a new UV active media LiY 0,3Lu0,7F4:Ce3+ and LiY 0,3Lu0,7F4:Ce3++Yb3+

We show that the LiY0,3Lu0,7F4:Ce 3+ and LiY0,3Lu0,7F4:Ce 3++Yb3+ crystals are promising active media of UV spectral range with low-threshold lasing (30-90 mJ/cm2). Due to crystal-chemical approach (additional doping by ions Yb3+) we obtained the effect of suppression of spurious photodynamic processes. The active medium LiY0,3Lu0,7F4: Ce3++ Yb3+ combines properties of saturable amplifier and oscillator with small saturation energy, and promising to generate pulses of ultrashort duration in the UV spectrum. © Published under licence by IOP Publishing Ltd

Laser performance investigation of a new UV active media LiY 0,3Lu0,7F4:Ce3+ and LiY 0,3Lu0,7F4:Ce3++Yb3+

We show that the LiY0,3Lu0,7F4:Ce 3+ and LiY0,3Lu0,7F4:Ce 3++Yb3+ crystals are promising active media of UV spectral range with low-threshold lasing (30-90 mJ/cm2). Due to crystal-chemical approach (additional doping by ions Yb3+) we obtained the effect of suppression of spurious photodynamic processes. The active medium LiY0,3Lu0,7F4: Ce3++ Yb3+ combines properties of saturable amplifier and oscillator with small saturation energy, and promising to generate pulses of ultrashort duration in the UV spectrum. © Published under licence by IOP Publishing Ltd

Research of the interaction mechanism between HCl and semiconductor metal oxides

AbstractGas-sensitivity was investigated of n- and p-types conductivity semiconductor sensors based on zinc, indium and chrome oxides with the respect to hydrogen chloride (0.06 – 3 ppm). Disclosed were two mechanisms of interaction between НС1 and above metal oxides. It is demonstrated that HCl chemisorption results in decrease, and chlorine generation by HCl oxidation results in increase of semiconductor sensor resistance of n-type conductivity. Inverse relationship is observed for sensors with p-type conductivity. Calculation results of НСl conversion degree under the conditions of thermodynamic equilibrium of the reaction of HCl to Cl2 oxidation are in good agreement with the experimental results for different sensor temperatures, gas humidity range and oxygen content