Kinetics of excitation transfer from Cr to Fe ions in co-doped ZnSe.

The transfer of electronic excitations from Cr to Fe ions in co-doped epitaxially grown ZnSe is studied by time-resolved photoluminescence (PL) spectroscopy with unprecedented sub-10 ns time resolution. Upon excitation of Cr ions by a picosecond pulse at 2.05 µm wavelength, PL from Fe ions displays a delayed onset and a retarded decay in comparison to Fe PL directly excited at 3.

Anisotropic ZnS:Cr crystal: material for compact and efficient mid-IR tunable lasers.

A laser-quality anisotropic : element was obtained using prolonged hot isostatic pressing at high temperature. Lasing centered at a wavelength of 2.45 µm was obtained with longitudinal pumping at a wavelength of 1.

Spectral dependence of the refractive index of chemical vapor deposition ZnSe grown on substrate with an optimized temperature increase.

Precise measurement of the refractive index of chemical vapor deposition (CVD) ZnSe with the Fourier-transform interference refractometry method from 0.9 to 21.7microm (from 11,000 to 460cm(-1)) with 0.