Development of terahertz spectroscopic system with compactness and wide frequency range

2016 Fiscal Year Final Research Report

• Project/Area Number: 25286075
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Optical engineering, Photon science
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: Nawata Kouji 国立研究開発法人理化学研究所, 光量子工学研究領域, 基礎科学特別研究員 (90586405)
• Co-Investigator(Renkei-kenkyūsha): Minamide Hiroaki 理化学研究所, 光量子工学研究領域テラヘルツ光源研究チーム, リームリーダー (10322687)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 非線形光学波長変換 / 差周波発生 / 近赤外レーザー / テラヘルツ波

Outline of Final Research Achievements

Widely tunable THz-wave generation based on difference frequency generation and THz-wave up-conversion detection were demonstrated. As extending to lower frequency generated by DFG method, injection-seeding technique was applied. THz-wave generation with the tunability from 0.3 THz to 4 THz was demonstrated. To improve the signal/noise ratio for spectroscopic measurement, sensitive up-conversion detection was also demonstrated. As a result, minimum detectable THz-wave energy was 100 aJ/pulse, which was exceeding cryogenically cooled Si-bolometer.

Free Research Field

非線形光学