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    • 96. 发明申请
    • METHOD AND APPARATUS FOR PHASE-COMPENSATED SENSITIVITY-ENHANCED SPECTROSCOPY (PCSES)
    • 相位敏感度增强光谱(PCSES)的方法和装置
    • WO2010110926A3
    • 2011-01-13
    • PCT/US2010000930
    • 2010-03-26
    • N & K TECHNOLOGY INCLI GUOGUANG
    • LI GUOGUANG
    • G01B11/06G01J3/36G01J3/447G01N21/25G01N21/41
    • G01B11/0641G01J3/447G01N21/211G01N21/8422G01N2021/213
    • A method and apparatus for convolving spectroscopic data with certain phase information for practicing phase- compensated sensitivity-enhanced spectroscopy (PCSES). PCSES uses a beam of radiation in a polarization state PSP from a source emitting at a plurality of wavelengths, and places in the beam a compensator capable of altering polarization state PSP by applying a delimited phase shift ? between two orthogonal polarization axes of the radiation to restrict a finely-vibrating spectrum. A sample disposed in the beam after the compensator generates a response beam by reflection, transmission or even both. A polarization state PSa of the response beam is passed to a detector to determine a spectrum of the response beam. A first spectrum is collected when polarization states PSP, PSa and the compensator are in a first polarization-altering configuration and a second spectrum is collected when polarization states PSP, PSa and the compensator are in a second polarization-altering configuration. A phase-compensated spectrum is then derived from just the first and second spectra thereby allowing the user to undertake optical characterization, including the measurement of film thickness t and complex indices of refraction n, k of the sample with as few as just two polarization-altering configurations.
    • 一种用于实现相位补偿灵敏度增强光谱(PCSES)的具有某些相位信息的光谱数据卷积的方法和装置。 PCSES使用来自发射多个波长的源的偏振状态PSP中的辐射束,并且通过施加限定的相移θ将能够改变偏振状态PSP的补偿器放置在光束中。 在辐射的两个正交偏振轴之间限制细振动光谱。 在补偿器之后设置在光束中的样品通过反射,透射或甚至两者产生响应光束。 响应光束的偏振态PSa被传递到检测器以确定响应光束的光谱。 当极化状态PSP,PSa和补偿器处于第一偏振改变配置时收集第一光谱,并且当偏振态PSP,PSa和补偿器处于第二偏振改变配置时收集第二光谱。 然后,仅从第一和第二光谱导出相位补偿光谱,从而允许用户进行光学表征,包括测量膜厚度t和样品的复数折射率n,k,其中仅具有两个极化 - 改变配置