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A microcavity device that converts infrared (IR) radiation into blue light could enable safe, daily use of deep ultraviolet (DUV) light for disinfection and sterilization.
The device was developed by a research group from Osaka University and was built without a polarity-inverted structure. The lack of reliance on birefringence or the periodically polarization inverted structure expands the flexibility in the selection of the device structures and the materials — giving the researchers more flexibility in the selection of structures and materials for the wavelength conversion to convert to DUV light.
Digital camera image of blue second-harmonic light emission with a wavelength of 428 nm using an IR cutoff filter. Courtesy…READ MORE