Optical Materials Express

Transition-metal-doped II-VI semiconductor materials enable high power lasers in the mid-infrared range and combine superb ultra-fast laser capabilities with high nonlinearity and polycrystalline microstructures that provide random quasi-phase matching. A femtosecond polycrystalline Cr:ZnS and Cr:ZnSe laser with a flexible design was developed by the authors; this figure shows the microstructure of polycrystalline Cr:ZnS, which is optimized for high SFH output. See Vasilyev et al. Opt. Mater. Express 7, 2636-2650 (2017).

1. Observation of “fast” and “slow” decay processes in oxygen-doped hydrogenated amorphous silicon nitride thin films
2. Negative refractive index metasurface in the 2.0-THz band
3. Three-dimensional beam-splitting transitions and numerical modelling of direct-laser-written near-infrared LiNbO3 cladding waveguides
4. Processing and fabrication of micro-structures by multiphoton lithography in germanium-doped arsenic selenide
5. Titanium nitride as a plasmonic material for visible and near-infrared wavelengths