Coherent control of molecular vibrations in carbon nanomaterials and monolayers with sub-10 fs pulse shaping technique

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13273
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanostructural physics
• Research Institution: Yokohama National University
• Principal Investigator: Takeda Jun 横浜国立大学, 大学院工学研究院, 教授 (60202165)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: フェムト秒分光 / 波形整形 / コヒーレント制御

Outline of Final Research Achievements

In this research, we have developed sub-10 fs pulse-shaping technique with a programmable spatial light modulator, negative chirp mirrors and a pair of glass wedges. Using three shaped pulses with optimized temporal modulations, we could successfully demonstrate the coherent control of multiple high-frequency phonons in 4H-SiC. In case of benzenethiol self-assembled monolayer samples adsorbed on Au film, we sensitively measured the frequency-shift of high frequency molecular vibrations, which originates from the interaction with its substrate.

Free Research Field

光物性、レーザー分光