High-sensitivity detection of stable isotopes by laser and photonic technology

Research Project

Project/Area Number	15H03756
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Research Field	Geochemistry/Cosmochemistry
Research Institution	Japan Agency for Marine-Earth Science and Technology
Principal Investigator	SAKAI Saburo 国立研究開発法人海洋研究開発機構, 生物地球化学研究分野, 技術研究員 (90359175)
Project Period (FY)	2015-04-01 – 2018-03-31
Project Status	Completed (Fiscal Year 2017)
Budget Amount *help	¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000) Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000) Fiscal Year 2016: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000) Fiscal Year 2015: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Keywords	レーザー分光 / 中赤外 / 安定同位体 / 同位体 / ファイバ / 軽元素 / レーザ分光
Outline of Final Research Achievements	The purpose of this study is to develop a mid-infrared laser spectrometer with “mid-infrared “optical fiber technology for detection of isotopologues. The laser oscillation and detection test with a mid-infrared quantum cascade laser, a mid-infrared fiber, a mid-infrared collimator, a small cell, and a mid-infrared detector showed that the laser oscillation-detection result through the mid-infrared fiber and collimators was good, however a fringe increase due to a small cell was found. As the results, the fiber-based laser spectroscopic system, without using the traditional optical lens system, could be possible even in the mid-infrared region.