Mid-infrared laser performance of Ce3+-doped selenide glass

An extensive study of a novel room-temperature mid-infrared Ce3+-doped Ge20Sb10Ga5Se65 glass laser is reported. An influence of output-coupler transmission on laser efficiency and emission spectra is investigated. Pumped by a pulsed Fe:ZnSe laser at 4.1 mu m, a maximum output energy of 35 mJ is demonstrated at 5.2 mu m, with a laser threshold of about 60 mJ and a slope efficiency of 21%. The tuning range of a mid-infrared Ce:glass laser is reported for the first time: with an intracavity prism, the laser is continuously tunable in the spectral range of 4.5-5.6 mu m. The internal losses are determined to be below 9% per roundtrip. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Automated summary

An extensive study of a novel room-temperature mid-infrared Ce3+-doped Ge20Sb10Ga5Se65 glass laser was reported. The study investigated the influence of output-coupler transmission on laser efficiency and emission spectra. The laser was pumped by a pulsed Fe:ZnSe laser at 4.1 mu m, demonstrating a maximum output energy and a tuning range for the first time.