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    • 3. 发明申请
    • THZ SPECTROSCOPE AND METHOD FOR DETERMINING THE SPECTRAL FREQUENCY AND/OR PHASE RESPONSE OF A SAMPLE
    • TMC分光镜和方法用于确定光谱频率和/或样品的相位响应
    • WO2011015298A8
    • 2011-05-12
    • PCT/EP2010004587
    • 2010-07-27
    • TECH UNI CAROLO WILHELMINA ZU BRAUNSCHWEIGSCHELLER MAIK
    • SCHELLER MAIK
    • G01J3/42G01N21/35
    • G01J3/42G01N21/3581
    • The invention relates to a THz spectroscope (1) having a multi-mode laser light source (2) for creating a multi-mode laser radiation having equidistant mode spacing, having a beam splitter (4) for dividing the laser light beam (3) into a transmit path (5) and a receive path (6), a delay unit (7) in the transmit or receive path (5, 6) or in the path of a THz wave (20), an emitter (17), preferably in the form of a photoconductive antenna in the transmit path (5) for transmitting electromagnetic THz waves (20) in the THz frequency range and a detector (8), preferably in the form of a photoconductive antenna in the receive path for capturing the electromagnetic response pulses (A) or a sample (10) that is arranged in the beam path of the emitter (17) and detector (8) and that can be loaded with the electromagnetic THz waves (20) of the emitter (17) and having a signal evaluation unit (9) that can be connected to a signal measurement output of the detector (8) that is configured to evaluate the spectral frequency and/or phase response of the sample (10) in dependence on the response pulses (A) of the sample (10) received by the detector (8) in relation to the multi-mode laser radiation (12), which modulates the detector (10), directed directly onto the detector (8) from the laser light source (2) in the receive path (6). The signal evaluation unit (9) is configured to separate individual response pulses (A) from the measurement signal based on the equidistant spacing of the response pulses (A) to one another that they have due to the equidistant mode spacing of the laser radiation, and to determine the spectral frequency and/or phase response of the sample (10) from the separated response pulses (A).
    • 阿太赫兹分光镜(1)与多模激光源(2),用于生成具有等距的方式间隔的多模激光辐射,用分束器(4),用于将所述激光束(3)在发射路径(5)和一个接收路径(6) ,在发送一个延迟单元(7)或接收路径(5,6)中或在THz波(20),发射极(17),优选地在传输路径(5)的光电导天线的形式的,用于发射电磁太赫兹的路径 波(20)在所述太赫兹频率范围,和一个检测器(8),优选在光电导天线的形式接收路径(A)(8)布置在所述发射器(17)和检测器的光束路径中的样品(10)的用于检测电磁响应脉冲 并与所述发射器(17)的太赫兹电磁波(20)可以被作用,并且可以被连接到与所述检测器的测量输出(8)信号评估单元(9)的信号,用于评估频谱频率和/ 或(8)所述样本(10)相对于该激光光源(2)在接收路径中的响应脉冲(A)(6)直接到检测器上由记录在响应中的样品(10)由检测器的相位响应(8)引导的多模 调节所述检测器(10)布置的激光辐射(12)进行说明。 所述信号分析单元(9),用于从所述测量信号个别响应脉冲(A)的响应脉冲(A)相互与此由于激光辐射的等距时尚距离的等距间隔的基础上的分离,并用于确定所述频谱的频率和/或样本的相位响应 (10)从分离的脉冲响应(A)组。