Phase-Shifted Fresnel Zone Lenses for Photomixing Generation of Coherent THz Wave
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概要
- 論文の詳細を見る
Novel optics configurations simplified by using phase-shifted Fresnel zone lenses (FZLs) are proposed for THz wave generation by mixing optical beams from integrated twin lasers on GaAs photomixers. The phase-shifted FZL superimposes and collinearly collimates the beams from the closely-aligned twin lasers, or superimposes and focuses them directly onto a photomixer, with a high efficiency. Phase-shifted binary and analog FZLs were designed and fabricated by electron beam writing. Good performances close to the theoretical prediction were obtained, and THz wave generation was successfully demonstrated.
- 2012-07-25
著者
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Suhara Toshiaki
Department Of Elect Ronics Graduate School Of Engineering Osaka University
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Uemukai Masahiro
Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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Suhara Toshiaki
Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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Vijayakumar Anand
Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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