2022/12/01 by Sorokin, E., Okhrimchuk, A., Tolstik, N. +4
#FOS: Physical sciences #Optics (physics.optics)
paper · doi:10.48550/arxiv.2212.00905
We report the first direct femtosecond laser-writing of buried channel waveguides in monocrystalline ZnS. We also report the first single-mode Cr:ZnS depressed cladding buried waveguide laser manufactured by femtosecond laser writing. The laser yields 150 mW average power at 2272 nm wavelength with 11% slope efficiency. A depressed cladding waveguide with propagation loss of 0.62 dB/cm at 1030 nm allowed to obtain spectral broadening under femtosecond-pumping at 1030 nm.