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13 March 2024 Advances in volume Bragg gratings for 400-600 nm spectral region
V. Smirnov, R. Vasilyeu, O. Mokhun, A. L. Glebov
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Proceedings Volume PC12866, Components and Packaging for Laser Systems X; PC1286608 (2024) https://doi.org/10.1117/12.3004508
Event: SPIE LASE, 2024, San Francisco, California, United States
Abstract
The transparency region of Photo-Thermo-Refractive (PTR) glass extends from the near UV up to 2.5-micron spectral region. Recent advances in the technology of PTR glass and Volume Bragg Grating (VBG) recording enables fabrication of optical filters and intra-cavity mode selecting optical elements in the spectral region of 400-600 nm with bandwidth from 200 GHz down to 20 GHz. VBGs with reduced spectral bandwidth can be used for fabrication of lasers with extended coherence and improved wavelength accuracy. Filters with narrow spectral bandwidth (below 50 GHz) and high diffraction efficiency (>90%) are suitable for signal to pump separation, single photon detection, or other quantum applications.
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V. Smirnov, R. Vasilyeu, O. Mokhun, and A. L. Glebov "Advances in volume Bragg gratings for 400-600 nm spectral region", Proc. SPIE PC12866, Components and Packaging for Laser Systems X, PC1286608 (13 March 2024); https://doi.org/10.1117/12.3004508
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KEYWORDS
Volume Bragg gratings
Fabrication
Glasses
Optical filters
Quantum efficiency
Quantum signals
Signal detection
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