Development of a cavity-enhanced phase-matched coherent anti-Stokes Raman spectroscopy

2015 Fiscal Year Final Research Report

• Project/Area Number: 26620120
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Analytical chemistry
• Research Institution: Kyushu University
• Principal Investigator: Zaitsu Shin-ichi 九州大学, 工学(系)研究科(研究院), 准教授 (60423521)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 共振器増強分光 / コヒーレント反ストークスラマン散乱 / ガス分析

Outline of Final Research Achievements

Cavity-enhanced phase-matched coherent anti-Stokes Raman spectroscopy (CARS) for a novel tool to improve a molecular detection sensitivity of conventional intracavity Raman spectroscopy has been developed. We found an issue in the stability of a cavity resonant condition when both hydrogen and inert gas are filled in the cavity chamber. To stabilize the cavity resonant condition, a feedback control system for two beams having different wavelengths (fundamental: Ti:sapphire laser and Stokes: ECLD). This work will contribute to high-sensitive detection of radio-active hydrogen isotopes based on a phase-matched CARS technique.

Free Research Field

応用分析化学