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Device and method for quickly adjusting size of terahertz time-domain spectroscopy measurement dead zone

A technology for terahertz time-domain and spectral measurement, which is applied in the field of devices for quickly adjusting the size of the quiet zone of terahertz time-domain spectral measurement, and can solve the problem that the terahertz time-domain spectral scattering characteristic measurement system cannot adjust the range of quiet zone targets of different sizes, etc. problem, to achieve the effect of improving system test flexibility, fast response speed, and fast and accurate adjustment of mirror position

Active Publication Date: 2020-11-03
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem that the existing terahertz time-domain spectral scattering characteristic measurement system cannot adjust the range of the quiet zone to test targets of different sizes

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  • Device and method for quickly adjusting size of terahertz time-domain spectroscopy measurement dead zone
  • Device and method for quickly adjusting size of terahertz time-domain spectroscopy measurement dead zone

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Embodiment Construction

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] A device for rapidly adjusting the size of the quiet zone in terahertz time-domain spectroscopy, such as figure 1 As shown, it includes a terahertz antenna 1, a first reflector 2, a second reflector 3, a third reflector 4, a main reflector 5, a first electric shift stage 6, a second electric shift stage 7 and an adjustment component 8,...

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Abstract

The invention relates to a device and method for quickly adjusting the size of a terahertz time-domain spectroscopy measurement dead zone, and the device comprises a terahertz antenna, a first reflector, a second reflector, a third reflector, a main reflector, a first electric moving table, a second electric moving table, and an adjustment part. The first electric moving table and the second electric moving table are erected on the optical platform; The terahertz antenna is erected on the first electric moving table, the first reflector and the third reflector are erected on the two adjustingcomponents respectively, the two adjusting components are erected on the first electric moving table and the second electric moving table respectively, the second reflector is fixedly connected to theoptical platform on one side of the second electric moving table, and the main reflector is fixedly connected to the optical platform on the other side of the second electric moving table. The firstreflector moves to reflect the wave beam emitted by the terahertz antenna to the second reflector or the third reflector, and the second reflector and the third reflector reflect the wave beam to themain reflector. The selection flexibility of the target test size of the terahertz time-domain spectral scattering measurement system is improved.

Description

technical field [0001] The invention relates to the technical field of changing the range of a quiet zone, in particular to a device and method for quickly adjusting the size of a quiet zone in terahertz time-domain spectroscopy. Background technique [0002] Terahertz waves generally refer to electromagnetic waves with a frequency in the range of 0.1-10 THz, and the energy of the photons is about 1-10 meV. In the terahertz time-domain spectral scattering characteristic measurement system, because the terahertz beam energy is weak and has a Gaussian distribution, the quiet zone is the range of 1dB amplitude fluctuation near the center of the beam. It is difficult to coordinate the quiet zone range and energy density. If the Gaussian beam is expanded to a larger quiet zone range, the quiet zone beam energy density is insufficient to test smaller-sized targets; conversely, it is impossible to test large-sized targets. Therefore, how to quickly adjust the quiet zone range to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G02B17/06G02B7/182
CPCG01B11/00G02B17/06G02B7/1821
Inventor 张旭涛李粮生蔡禾孙金海李进春
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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