Transfer of angular momentum from circularly polarized terahertz pulse to electron beam

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K13817
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: Ito Hironori 東京農工大学, 工学(系)研究科(研究院), 特任助教 (60724127)
• Co-Investigator(Renkei-kenkyūsha): MISAWA Kazuhiko 東京農工大学, 大学院工学研究院, 教授 (80251396)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 時間反転対称の破れ / ベクトル波形整形 / テラヘルツ波 / 光誘起磁場

Outline of Final Research Achievements

This study demonstrates a fundamental physical phenomenon of manipulating the trajectory of electrons by optical pulse. In order to obtain a powerful terahertz wave that can change the trajectory of the electron beam, we demonstrate vector-field shaping of femtosecond near-infrared laser pulse without spatial light modulators. According to the result, instantaneous intensity tuning and polarization control of femtosecond near-infrared laser pulse with pulse energy of 0.3 mJ has been achieved. This is key technology to realize photon-induced time-reversal breaking of electron system.

Free Research Field

半導体光物性