High-speed high-resolution gas-phase Raman spectroscopy

被引:7
作者
Chen, PC [1 ]
Joyner, CC [1 ]
Patrick, ST [1 ]
Benton, KF [1 ]
机构
[1] Spelman Coll, Dept Chem, Atlanta, GA 30314 USA
关键词
D O I
10.1021/ac011129+
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A new Raman spectrometer has been developed that can produce a complete high-resolution gas-phase vibrational spectrum during the time period of a single laser pulse. Conventional gas-phase Raman spectroscopy uses a single narrow-band laser to produce signals that are weak, requiring relatively long collection times. This spectrometer uses a degenerate OPO as a broad-band source that covers a continuous range of > 3000 cm(-1). When a beam from this broad-band source is added to a narrow-band laser beam, the intensity of the Raman signal is amplified by the nonlinear optical effect. The resulting instrument can generate spectra with high-spectral (< 1 cm(-1)), spatial (< 0.05 mm(2)), and temporal resolution (< 1 s).
引用
收藏
页码:1618 / 1623
页数:6
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