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  • Title: Trace gas absorption spectroscopy using laser difference-frequency spectrometer for environmental application.
    Author: Chen W, Cazier F, Boucher D, Tittel FK, Davies PB.
    Journal: Laser Phys; 2001 May; 11(5):594-9. PubMed ID: 12143894.
    Abstract:
    A widely tunable infrared spectrometer based on difference frequency generation (DFG) has been developed for organic trace gas detection by laser absorption spectroscopy. On-line measurements of concentration of various hydrocarbons, such as acetylene, benzene, and ethylene, were investigated using high-resolution DFG trace gas spectroscopy for highly sensitive detection.
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