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arXiv · 2212.00905

Femtosecond laser writing of the depressed cladding buried channel waveguides in ZnS crystal

E. Sorokin·A. Okhrimchuk·N. Tolstik·M. Smayev·V. Likhov·V. L. Kalashnikov·I. T. Sorokina
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Abstract

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.

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E. Sorokin, A. Okhrimchuk, N. Tolstik, M. Smayev, V. Likhov, V. L. Kalashnikov, I. T. Sorokina. 2022-12-01. Femtosecond laser writing of the depressed cladding buried channel waveguides in ZnS crystal. https://arxiv.org/abs/2212.00905

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