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A device and method for quickly adjusting the size of the quiet zone in terahertz time-domain spectroscopy

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 for 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. problems, to achieve the effect of increasing the measurable target size range, improving test flexibility, and fast and accurate adjustment

Active Publication Date: 2022-01-28
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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  • A device and method for quickly adjusting the size of the quiet zone in terahertz time-domain spectroscopy
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  • A device and method for quickly adjusting the size of the quiet zone in terahertz time-domain spectroscopy

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[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 the quiet zone of terahertz time-domain spectroscopy, including a terahertz antenna, a first reflector, a second reflector, a third reflector, a main reflector, and a first electric shift stage , the second electric shift stage and adjustment components, the first and second electric shift stages are set up on the optical platform, the terahertz antenna is set up on the first electric shift stage, and the first and third mirrors are respectively set up on the two adjustment On the components, the two adjustment components are erected on the first and second electric shift stages respectively, the second mirror is fixedly connected to the optical platform on the side of the second electric shift stage, and the main reflector is fixed to the second electric shift stage On the optical platform on the other side; the first reflector moves to reflect the beam emitted by the terahertz antenna to the second reflector or the third reflector, and the second reflector and the third reflector reflect the beam to the main reflector, The invention has the advantage of improving the flexibility of selecting the target test size of the terahertz time-domain spectral scattering measurement system.

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 Patents(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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