An optical angle sensor based on second harmonic generation of a modelocked laser

Hiraku Matsukuma, Shuhei Madokoro, Masaru Nakao, Yuki Shimizu, Wei Gao

研究成果: Conference article査読


This paper presents an optical angle sensor using characteristics of second harmonic generation (SHG) which is a nonlinear process of electromagnetic field. In a SHG process, the fundamental wave is made incidence into a non-linear optical crystal. The second harmonic wave which has double frequency of the fundamental wave is then generated. The light intensity of the generated second harmonic wave changes with the incident angle of the fundamental wave to the non-linear optical crystal due to phase mismatch which is a factor of determining the conversion efficiency of SHG. The dependence of second harmonic generation on angular displacement is calculated theoretically for mode-locked femto second laser light source. Experiment is also carried out in order to demonstrate the theoretical calculation.

ジャーナルProceedings of SPIE - The International Society for Optical Engineering
出版ステータスPublished - 2019
イベントOptical Technology and Measurement for Industrial Applications Conference 2019 - Yokohama, Japan
継続期間: 2019 4 222019 4 26

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学


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