Modulated Fourier Transform Raman fiber-optic spectroscopy
    2.
    发明授权
    Modulated Fourier Transform Raman fiber-optic spectroscopy 失效
    调制傅里叶变换拉曼光纤光谱

    公开(公告)号:US6061134A

    公开(公告)日:2000-05-09

    申请号:US316176

    申请日:1999-05-21

    IPC分类号: G01B9/02 G01J3/44

    CPC分类号: G01J3/44

    摘要: A modification to a commercial Fourier Transform (FT) Raman spectrometer is presented for the elimination of thermal backgrounds in the FT Raman spectra. The modification involves the use of a mechanical optical chopper to modulate the continuous wave laser, remote collection of the signal via fiber optics, and connection of a dual-phase digital-signal-processor (DSP) lock-in amplifier between the detector and the spectrometer's collection electronics to demodulate and filter the optical signals. The resulting Modulated Fourier Transform Raman Fiber-Optic Spectrometer is capable of completely eliminating thermal backgrounds at temperatures exceeding 300.degree. C.

    摘要翻译: 提出了商业傅里叶变换(FT)拉曼光谱仪的修改,用于消除FT拉曼光谱中的热背景。 该修改涉及使用机械光斩波器来调制连续波激光器,通过光纤远程收集信号,以及在检测器和检测器之间连接双相数字信号处理器(DSP)锁定放大器 光谱仪的收集电子设备来解调和滤波光信号。 所得到的调制傅立叶变换拉曼光纤光谱仪能够在超过300℃的温度下完全消除热背景。