High-speed high-resolution gas-phase Raman spectroscopy.
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 mm2), and temporal resolution (<1 s).
Chen
Peter C
PC
Department of Chemistry, Spelman College, Atlanta, Georgia 30314, USA.
Joyner
Candace C
CC
Patrick
Sheena T
ST
Benton
Kanika F
KF
D005583:Fourier Analysis; D005740:Gases / Q000032:analysis*; D012680:Sensitivity and Specificity; D017550:Spectroscopy, Fourier Transform Infrared / Q000592:standards; D013059:Spectrum Analysis, Raman / Q000379:methods* / Q000592:standards; D013997:Time Factors
D005740:Gases