Terahertz full-polarization-state detection spectrograph
A terahertz detector and terahertz technology, applied in the field of terahertz wave detection, can solve problems such as long measurement time and measurement error, achieve rapid detection, improve detection accuracy and detection efficiency
Active Publication Date: 2016-12-21
SHENZHEN CCT THZ TECH CO LTD
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This measurement can use electro-optic crystals or conventional photoconductive antenna receivers, but the electro-optic crystals or photoconductive antennas must be rotated to detect each polarization state independently. This mechanical adjustment not only takes a long time to measure, but also causes great measurement errors.
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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0026] see figure 1 , figure 1 It is a structural diagram of a terahertz full polarization detection spectrometer ...
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Abstract
The invention relates to a terahertz full-polarization-state detection spectrograph. The terahertz full-polarization-state detection spectrograph comprises a terahertz wave generator, a polarizer, a polarizing beam-splitting sheet, a horizontal terahertz detector and a vertical terahertz detector, wherein the terahertz wave generator is used for generating a terahertz wave and carrying out purity optimization on the terahertz wave through the polarizer; a measured object is used for modulating the terahertz wave after purity optimization to obtain a terahertz modulated wave; the terahertz modulated wave is decomposed into a horizontal terahertz wave and a vertical terahertz wave which are vertical to each other in a polarization state through the polarizing beam-splitting sheet; the two corresponding terahertz detectors are used for detecting the two terahertz waves respectively, and then characteristic analysis is carried out on a measured sample according to the structure of the detected object. According to the terahertz full-polarization-state detection spectrograph, various full-polarization-state terahertz waves can be accurately detected quickly, so that the detection precision and detection efficiency of the measured sample are improved.
Description
technical field [0001] The invention relates to the field of terahertz wave detection, in particular to a terahertz full polarization state detection spectrometer. Background technique [0002] Terahertz full polarization state detection can be applied to research in many fields, such as the detection of terahertz optical devices, including terahertz prisms, wave plates, and polarization-sensitive photoconductive antennas. It can also be applied in the biological field, such as the detection of biomolecules with chiral characteristics such as amino acids and proteins. Molecules with chiral characteristics absorb differently the left-handed or right-handed circularly polarized light of terahertz. This phenomenon is also called circular dichroism sex. The wide range of application fields makes the research of terahertz full polarization state detection spectrometer of great value. [0003] To measure multiple polarization states introduced by circular dichroism or optically ...
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IPC IPC(8): G01N21/3581
CPCG01N21/3581G01N2201/0636G01N2201/0638G01N21/21G01N2201/0683G01N21/3586G01N2201/06113
Inventor 潘奕彭世昌丁庆
Owner SHENZHEN CCT THZ TECH CO LTD