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1 April 2022 Reflective holographic phase masks for spatial beam shaping
Lam H. Mach, Oussama Mhibik, Leonid B. Glebov, Ivan B. Divliansky
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Proceedings Volume PC11987, Laser Resonators, Microresonators, and Beam Control XXIV; PC119870P (2022) https://doi.org/10.1117/12.2610372
Event: SPIE LASE, 2022, San Francisco, California, United States
Abstract
Transmissive holographic phase masks – i.e., complex phase-structures embedded into the volume of transmissive Bragg gratings – have been shown to possess a high degree of achromatism, uniquely suited for applications utilizing broadband optical-sources. Here we report on the holographic construction of their reflective counterpart in photo-thermo-refractive glass, operating as tunable narrowband spectral filters that simultaneously provide phase incursion for spatial beam-transformation. Such an element is further employed in a linear, wavelength-tunable, continuous-wave Yb3+:KYW laser for intracavity beam-shaping.
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Lam H. Mach, Oussama Mhibik, Leonid B. Glebov, and Ivan B. Divliansky "Reflective holographic phase masks for spatial beam shaping", Proc. SPIE PC11987, Laser Resonators, Microresonators, and Beam Control XXIV, PC119870P (1 April 2022); https://doi.org/10.1117/12.2610372
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KEYWORDS
Holography
Reflectivity
Beam shaping
High power microwaves
Bragg gratings
Continuous wave operation
Glasses
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