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9 March 2023 Continuous-wave narrow-line lasing of polycrystalline Cr:ZnS/Se gain media in non-selective twisted mode cavities
Rem Danilin, Sergey Mirov, Vladimir Fedorov, Dmitry Martyshkin
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Proceedings Volume PC12399, Solid State Lasers XXXII: Technology and Devices; PC123990F (2023) https://doi.org/10.1117/12.2649415
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
Current work reports comparative laser characterization of Cr:ZnS/Se polycrystalline gain media in non-selective Fabry-Perot and twisted mode cavities. It was demonstrated that the spectral output of lasers based on polycrystalline Cr:ZnS/Se in non-selective Fabry-Perot cavities is broadened to ~20-50 nm due to spatial hole burning in the gain elements. Mitigating the spatial hole burning in the same cavities via “mode twisting” results in narrow-line oscillation with linewidth narrowing to ~80-90 pm. Switching between broadened and narrow line oscillations was demonstrated by adjusting the orientation of intracavity waveplates with respect to the Brewster facilitated polarization.
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Rem Danilin, Sergey Mirov, Vladimir Fedorov, and Dmitry Martyshkin "Continuous-wave narrow-line lasing of polycrystalline Cr:ZnS/Se gain media in non-selective twisted mode cavities", Proc. SPIE PC12399, Solid State Lasers XXXII: Technology and Devices, PC123990F (9 March 2023); https://doi.org/10.1117/12.2649415
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KEYWORDS
Continuous wave operation
Fabry–Perot interferometers
Hole burning spectroscopy
Photonics
Polarization
Diffusion
Laser beam characterization
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