199 nm vacuum-ultraviolet second harmonic generation from SrB4O7 vertical microcavity pumped with picosecond laser

Tomoaki Nambu; Masashi Yoshimura; Yusuke Mori; Yasufumi Fujiwara; Ryota Ishii; Yoichi Kawakami; Masahiro Uemukai; Tomoyuki Tanikawa; Ryuji Katayama

doi:10.35848/1882-0786/ad69fe

Applied Physics Express (Jan 2024)

199 nm vacuum-ultraviolet second harmonic generation from SrB4O7 vertical microcavity pumped with picosecond laser

Tomoaki Nambu,
Masashi Yoshimura,
Yusuke Mori,
Yasufumi Fujiwara,
Ryota Ishii,
Yoichi Kawakami,
Masahiro Uemukai,
Tomoyuki Tanikawa,
Ryuji Katayama

Affiliations

Tomoaki Nambu: Institute of Laser Engineering, Osaka University , Suita, Osaka 565‑0871, Japan
Masashi Yoshimura: Institute of Laser Engineering, Osaka University , Suita, Osaka 565‑0871, Japan
Yusuke Mori: Graduate School of Engineering, Osaka University , Suita, Osaka 565-0871, Japan
Yasufumi Fujiwara: Graduate School of Engineering, Osaka University , Suita, Osaka 565-0871, Japan; Research Organization of Science and Engineering, Ritsumeikan University , Nojihigashi, Kusatsu, Siga 1-1-1, Japan
Ryota Ishii: ORCiD; Department of Electronic Science and Engineering, Kyoto University , Kyoto 615-8510, Japan
Yoichi Kawakami: Department of Electronic Science and Engineering, Kyoto University , Kyoto 615-8510, Japan
Masahiro Uemukai: Graduate School of Engineering, Osaka University , Suita, Osaka 565-0871, Japan; Quantum Information and Quantum Biology Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University , Toyonaka, Osaka 560-0043, Japan
Tomoyuki Tanikawa: ORCiD; Graduate School of Engineering, Osaka University , Suita, Osaka 565-0871, Japan; Quantum Information and Quantum Biology Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University , Toyonaka, Osaka 560-0043, Japan
Ryuji Katayama: Graduate School of Engineering, Osaka University , Suita, Osaka 565-0871, Japan; Quantum Information and Quantum Biology Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University , Toyonaka, Osaka 560-0043, Japan

DOI: https://doi.org/10.35848/1882-0786/ad69fe
Journal volume & issue: Vol. 17, no. 8
p. 082004

Abstract

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We have proposed highly efficient microcavity wavelength conversion devices that do not utilize the birefringence or ferroelectricity of crystals. In this study, we utilized a low-birefringence paraelectric SrB _4 O _7 crystal with significant potential for wavelength conversion and high transparency down to 130 nm and succeeded in achieving 199 nm vacuum-ultraviolet second harmonic generation (SHG) with a picosecond laser. The wavelength of 199 nm is shorter than the theoretical minimum for SHG in BaB _2 O _4 of 205 nm. Our device could be a practical vacuum-ultraviolet SHG device, enabling significantly smaller and more efficient vacuum-ultraviolet laser sources compared to conventional systems.

Published in Applied Physics Express

ISSN: 1882-0778 (Print); 1882-0786 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics
Website: https://iopscience.iop.org/journal/1882-0786

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