COHERENT ANTI-STOKES RAMAN SPECTROSCOPY
    4.
    发明公开
    COHERENT ANTI-STOKES RAMAN SPECTROSCOPY 有权
    相干反斯托克斯拉曼光谱

    公开(公告)号:EP2409140A1

    公开(公告)日:2012-01-25

    申请号:EP10711255.9

    申请日:2010-03-19

    IPC分类号: G01N21/65 G01J3/44

    摘要: A coherent anti-Stokes Raman spectroscopy (CARS) system (10) comprises a laser light source (14) for emitting pulsed light, a dichroic beam splitter (18) for splitting a light pulse from the light source into a pump pulse (22) and a Stokes pulse (20) and directing these pulses along respective distinct paths, chirping means, e.g. dispersive glass blocks (24, 30), for chirping the pump and Stokes pulses, directing means for directing the chirped pump and Stokes samples to a sample in time overlap, and detecting means for detecting light stimulated from the sample by the interaction of the pump and Stokes pulses. The system may comprise means, e.g. a reflector (32) connected to a linear motor (34), for adjusting the period between the arrival at the sample of the starts of the chirped pump and Stokes pulses. The system may further comprise a pulse replicating unit for converting a pulse from the light source into a plurality of pulses distributed in time.