6 March 2013 Solid-state laser source of narrowband ultraviolet B light for skin disease care
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Abstract
We report about the development of all-solid-state laser source of narrowband UV-B light for medical applications. The device is based on a gain-switched Ti: Sapphire laser with volume Bragg grating, pumped at 532 nm and operating at 931.8 nm, followed by a third harmonic generator and a fiber optic beam homogenizer. The maximum available pulse energy exceeded 5 mJ at 310.6 nm, with a pulse repetition rates of 50 Hz. The output characteristics satisfy the medical requirements for psoriasis and vitiligo treatment. A new optical scheme for third harmonic generation enhancement at moderate levels of input intensities is proposed and investigated. As a result, 40% harmonic efficiency was obtained, when input pulse power was only 300 kW.
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Aleksandr A. Tarasov, Aleksandr A. Tarasov, Hong Chu, Hong Chu, } "Solid-state laser source of narrowband ultraviolet B light for skin disease care", Proc. SPIE 8599, Solid State Lasers XXII: Technology and Devices, 85991R (6 March 2013); doi: 10.1117/12.2000265; https://doi.org/10.1117/12.2000265
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