Sorokin, E., Bushunov, A. A., Tolstik, N., Teslenko, A., Einmo, E., Tarabrin, M. K., Lazarev, V. A., & Sorokina, I. T. (2022). All-laser-microprocessed waveguide Cr:ZnS laser. Optical Materials Express, 12(2), 414–420. https://doi.org/10.1364/OME.452026
We report the proof-of-concept of an operational laser active medium with a depressed cladding waveguide manufactured in the volume of a Cr2+:ZnS single-crystalline sample and antireflection microstructures fabricated on its facets exclusively by femtosecond laser processing techniques. This allowed us to achieve transmittance in a broad range from 2 to 8 µm, approaching a maximum of over 90% near 2.5 µm, and lasing at 2275 nm at the average output power of 20 mW for the absorbed pump power of 500 mW with the slope efficiency of 5.5 %. This demonstration opens up a route towards the industrial fabrication of compact integrable laser sources and sensors based on II-VI materials.
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Project (external):
Ministry of Science and Higher Education of the Russian Federation Norges Forskningsråd ATLA Lasers AS
