2012年9月
Terahertz vector beam generation using segmented nonlinear optical crystals with threefold rotational symmetry
OPTICS EXPRESS
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- 巻
- 20
- 号
- 20
- 開始ページ
- 21896
- 終了ページ
- 21904
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1364/OE.20.021896
- 出版者・発行元
- OPTICAL SOC AMER
We propose and demonstrate a simple method for cylindrical vector beam generation in the terahertz frequency region using optical rectification in segmented nonlinear crystals with threefold rotational symmetry. We used segmented GaP(111) plates to generate the terahertz cylindrical vector beam, and obtained clear evidence of the beam generation with a terahertz camera. By this method, a broadband terahertz cylindrical vector beam can be generated, and the radial and azimuth modes can be easily switched. We also report on the direct observation of the longitudinal electric field components at the focal point using a terahertz time-domain spectroscopy technique. (C) 2012 Optical Society of America
- リンク情報
- ID情報
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- DOI : 10.1364/OE.20.021896
- ISSN : 1094-4087
- Web of Science ID : WOS:000309522400007