ENGINEERING RESEARCH EQUIPMENT: Acquisition of an Infrared Optical Parametric Generator for Degenerate Four-Wave Mixing Measurements

摘要-CTS-9310942-PI建议购买一台光学参数发生器，以在红外(1.4m-4.0m)光谱区域产生可调谐的相干辐射，用于使用简并四波混频技术的分子光谱。在研究碳氢化合物扩散火焰和金刚石形成化学气相沉积过程中碳烟形成的详细化学方面，PI还有悬而未决的建议。红外DFWM被计划用于研究这些系统。OPG在以前无法访问的波长范围内产生相干辐射，因此可以在现场测量在碳氢化合物反应体系中重要的稳定和自由基物种的浓度，如C2H2和CH3。为了解释这些测量，PI还打算进一步发展DFWM理论，特别是当它适用于具有2个以上原子的分子时。

ABSTRACT--CTS-9310942 The PI proposes to purchase an optical parametric generator (OPG) to produce tunable coherent radiation in the infrared (1.4 - 4.0 m) spectral region for use in molecular spectroscopy using the degenerate four wave mixing (DFWM) technique. The PI has pending proposals to investigate the detailed chemistry of soot formation in hydrocarbon diffusion flames and in diamond-forming chemical vapor deposition processes. Infrared DFWM is planned to be used in studying these systems. The OPG generates coherent radiation over a range of wavelengths previously inaccessible so that concentrations of stable and radical species important in hydrocarbon reaction systems such as C2H2 and CH3, can be measured in situ. In order to interpret these measurements the PI also intends to further develop the theory of DFWM, especially as it applies to molecules with more than 2 atoms.