All-laser-microprocessed waveguide Cr:ZnS laser
Sorokin, Evgeni; Bushunov, Andrey; Tolstik, Nikolai; Teslenko, Andrei; Einmo, Eskil; Tarabrin, Mikhail; Lazarev, Vladimir; Sorokina, Irina T
Peer reviewed, Journal article
Published version
Permanent lenke
https://hdl.handle.net/11250/3047982Utgivelsesdato
2022Metadata
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Sammendrag
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. All-laser-microprocessed waveguide Cr:ZnS laser