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Anisotropic ZnS:Cr2+ crystal: material for compact and efficient mid-IR tunable lasers

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Abstract

A laser-quality anisotropic ${\rm ZnS}{:}{{\rm Cr}^{2 +}}$ 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 1.94 µm. The short-cavity laser slope efficiency with respect to the absorbed power was about 78%. The lasing wavelength was continuously tuned in the range of 2.35–2.52 µm by rotating the Brewster active element around the normal to its surface.

© 2021 Optical Society of America

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Supplementary Material (1)

NameDescription
Supplement 1       Calculating the transmission of a hexagonal ZnS Lyot filter.

Data Availability

Data underlying the results presented in this paper are available in Supplement 1.

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