Novel infrared broadband and high-resolution spectroscopy

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05547
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Analytical chemistry
• Research Institution: Keio University
• Principal Investigator: Hasegawa Taro 慶應義塾大学, 理工学部(矢上), 講師 (80289305)
• Co-Investigator(Kenkyū-buntansha): 佐々田 博之 慶應義塾大学, 理工学部(矢上), 教授 (30146576)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 光周波数コム / 高分解能分光 / ヘテロダイン分光 / 位相変調

Outline of Final Research Achievements

We developed a fast spectroscopic scheme for high-resolution and broadband spectroscopy of molecules absorbing in the near infrared ligh. This scheme is a new spectroscopy using "optical frequency comb" as a light source for spectroscopy. With this spectroscopy, high-resolution, fast, and sensitive spectroscopy can be performed.
In additioni, in order to improve the mode density of the optical frequency comb, a multiplication scheme using phase modulation was developed. By combining these two schemes, direct spectroscopy of optical frequency comb with higher resolution than before can be performed.

Free Research Field

高分解能レーザー分光