Phase sensitive ultrasonic modulation method for the detection of
strain-sensitive spectral features
    15.
    发明授权
    Phase sensitive ultrasonic modulation method for the detection of strain-sensitive spectral features 失效
    用于检测应变敏感光谱特征的相敏超声波调制方法

    公开(公告)号:US4614116A

    公开(公告)日:1986-09-30

    申请号:US697674

    申请日:1985-02-04

    IPC分类号: G01N29/00 G01L1/24

    CPC分类号: G01L1/24

    摘要: A phase-sensitive ultrasonic modulation method for the detection of strain-sensitive spectral features involves the use of an ultrasonic field with well-defined wavefronts and a light beam of spot size less than the ultrasonic wavelength and of linewidth less than that of the spectral feature. When the light wavelength coincides with the wavelength of the spectral feature, the ultrasonic wave shifts, splits, or broadens the absorption lineshapes of the various centers contributing to the spectral feature thereby changing the amplitude or phase of the light beam or emitted fluorescence in synchrony with the ultrasonic field.

    摘要翻译: 用于检测应变敏感光谱特征的相敏超声波调制方法涉及使用具有明确定义的波前的超声波场和小于超声波长的光斑尺寸的光束以及小于光谱特征的光束的线宽 。 当光波长与光谱特征的波长一致时,超声波移动,分裂或拓宽对于光谱特征有贡献的各种中心的吸收线形状,从而同步地改变光束的幅度或相位或发射的荧光 超声场。