Development of the THz optical tweezer using the high-intensity radial polarized THz radiation from the ultra-short electron beam

2015 Fiscal Year Final Research Report

• Project/Area Number: 26600148
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Kuroda Ryunosuke 国立研究開発法人産業技術総合研究所, 分析計測標準研究部門, 主任研究員 (70350428)
• Co-Investigator(Kenkyū-buntansha): Taira Yoshitaka 産業技術総合研究所, 分析計測標準研究部門, 研究員 (60635803) ; Toyokawa Hiroyuki 産業技術総合研究所, 分析計測標準研究部門, 研究グループ長 (80357582)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: テラヘルツ / 小型加速器 / 超短パルス電子ビーム / 光ピンセット / 高性能レーザー / ラジアル偏光

Outline of Final Research Achievements

We have performed the high-brightness electron beam using the photo-cathode RF-gun based S-band compact electron linac with the magnetic pulse compressor. We have achieved the peak current electron beam up to kA order and irradiate it to the target to emit the coherent THz transition radiation and generate the radial polarization THz pulse. The THz Z-axis electric fields can be generated at the focus point. We tried to estimate the electric fields by measuring with the Z-axis THz probe to make the optical tweezer effect in the THz region. In near future, we will realize the THz optical tweezer and its applications.

Free Research Field

工学