DUV coherent light emission from ultracompact microcavity wavelength conversion device

Posted on 12.05.2022 - 22:26
A unique design of our ultracompact microcavity wavelength conversion device exploits the simple principle that the wavelength conversion efficiency is proportional to the square of the electric field amplitude of enhanced pump light in the microcavity, and expands the range of suitable device materials to include crystals that do not exhibit birefringence or ferroelectricity. Here, as a first step toward practical applications of all-solid-state ultracompact deep-ultraviolet coherent light sources, we adopted a low-birefringence paraelectric SrB4O7 crystal with great potential for wavelength conversion and high transparency down to 130 nm as our device material, and demonstrated 234 nm deep-ultraviolet coherent light generation, whose wavelength band is expected to be used for on-demand disinfection tools that can irradiate the human body.


Nambu, Tomoaki; Yano, Taketo; Umeda, Soshi; Yokoyama, Naoki; Honda, Hiroto; Tanaka, Yasunori; et al. (2022): DUV coherent light emission from ultracompact microcavity wavelength conversion device. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.5958945.v2
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Tomoaki Nambu
Taketo Yano
Soshi Umeda
Naoki Yokoyama
Hiroto Honda
Yasunori Tanaka
Yutaka Maegaki
Yusuke Mori
Masashi Yoshimura
Shuhei Kobayashi


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