发明名称 Terahertz spectroscopy system and method
摘要 A terahertz spectrometer includes: a terahertz-wave emitter and a terahertz receiver elements. The terahertz wave generated by means of generating beat frequency corresponding to the difference between two rapidly tunable continuous wave lasers. Having a difference in time between the interrogating signal and the reference signal at the receiver end side, which corresponds to intermediate frequency (IF), not centered around the baseband, i.e. zero Hertz. The offset step size of the intermediate frequency from zero Hertz is linearly correlated to the position of the interrogated object position.
申请公布号 US9279723(B2) 申请公布日期 2016.03.08
申请号 US201113212231 申请日期 2011.08.18
申请人 NOVATRANS GROUP SA 发明人 Roulston John F.;Mandelik Daniel
分类号 G01B9/02;G01J3/45;G01J3/42;G01J3/10;G01J3/433 主分类号 G01B9/02
代理机构 Browdy and Neimark, PLLC 代理人 Browdy and Neimark, PLLC
主权项 1. A method for use in spectroscopic measurements of a sample, the method comprising: generating inspecting and reference electro-magnetic radiation components of substantially the same frequency contents, said inspecting and reference electro-magnetic radiation components being swept according to a predetermined frequency pattern, directing said inspecting and reference radiation components to a detector along first and second different paths, respectively, allowing interaction of the inspecting radiation component with a sample located in the first path, thereby inducing a frequency difference between a frequency content of the inspecting radiation component and the reference radiation component interacting at the detector a signal resulting from said interaction between said inspecting and reference radiation components being indicative of one or more properties of the sample at a location where said inspecting radiation interacts with the sample; and controlling at least one of said predetermined pattern and the propagation of the inspecting and reference radiation components to the detector; wherein said controlling of said predetermined pattern of the frequency sweeping comprises concurrently affecting a firs, global frequency sweeping rate during a certain time period and a local modulation of the frequency sweeping with a second higher sweeping rate.
地址 Vaumarcus (NE) CH