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    • 1. 发明申请
    • SYSTEMS, METHODS, AND DEVICES FOR HANDLING TERAHERTZ RADIATION
    • 用于处理TERAHERTZ辐射的系统,方法和装置
    • US20080239317A1
    • 2008-10-02
    • US12013167
    • 2008-01-11
    • Brian SCHULKINXi-Cheng ZHANGThomas TONGUEJingzhou XUJian CHEN
    • Brian SCHULKINXi-Cheng ZHANGThomas TONGUEJingzhou XUJian CHEN
    • G01J4/00
    • G21K5/00B33Y80/00G01J4/00G01N21/211G01N21/3581H01S5/02236H01S2302/02
    • Methods and apparatus for detecting variations in electromagnetic fields, in particular, terahertz (THz) electromagnetic fields, are provided. The methods and apparatus employ polarization detection devices and controllers to maintain or vary the polarization of modulated signals as desired. The methods and apparatus are provided to characterize electromagnetic fields by directing the electromagnetic field and a probe beam upon an electro-crystal and detecting the modulation of the resulting probe beam. Detection of the modulation of the probe beam is practiced by detecting and comparing the polarization components of the modulated probe beam. Aspects of the invention may be used to analyze or detect explosives, explosive related compounds, and pharmaceuticals, among other substances. A compact apparatus, modular optical devices for use with the apparatus, sample holders, and radiation source mounts are also disclosed.
    • 提供了用于检测电磁场,特别是太赫兹(THz)电磁场的变化的方法和装置。 所述方法和装置使用偏振检测装置和控制器来根据需要维持或改变调制信号的极化。 提供的方法和装置用于通过将电磁场和探针光束引导到电晶体上并检测所得到的探针光束的调制来表征电磁场。 通过检测和比较调制探测光束的偏振分量来实现探测光束的调制的检测。 本发明的方面可用于分析或检测爆炸物,爆炸性相关化合物和药物等物质。 还公开了一种紧凑的装置,用于装置,样品架和辐射源底座的模块化光学装置。