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System for realizing terahertz wave beam transmission and bunching

A terahertz, beam technology, applied in the field of terahertz quasi-Gaussian beam transmission beamforming system, can solve problems such as low sensitivity

Inactive Publication Date: 2017-10-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

Compared with ultraviolet spectroscopy, infrared spectroscopy, paramagnetic resonance, etc., the sensitivity of conventional nuclear magnetic resonance spectroscopy is very low, so the sensitivity is very important for the successful promotion of this technology

Method used

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  • System for realizing terahertz wave beam transmission and bunching
  • System for realizing terahertz wave beam transmission and bunching
  • System for realizing terahertz wave beam transmission and bunching

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Embodiment Construction

[0021] Such as figure 1 As shown, the beamforming system for terahertz quasi-Gaussian beam transmission is mainly composed of a base 1, a phase correction mirror support 2, a phase correction mirror 3, an input corrugated waveguide 4, a rotating parabolic mirror support 5, a rotating parabolic mirror 6 and an output corrugated waveguide 7 composition. The phase correction mirror support 2 is connected with the phase correction mirror 3 and fixed on the base 1. The upper end of the phase correction mirror support 2 has an arc-shaped groove connected with the input corrugated waveguide 4, which is used to fix the corrugated waveguide with a large radius; the rotating parabolic mirror support 5 is connected with the rotating parabolic mirror 6 and fixed on the base 1, and the lower end of the rotating parabolic mirror support 5 has a round hole for fixing the output corrugated waveguide 7. The rotating parabolic mirror 3 is a part of the complete rotating parabolic mirror. It re...

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Abstract

The invention discloses a system for realizing terahertz wave beam transmission and bunching. The system comprises a corrugated waveguide input / output window, a rotating parabolic reflector and a phase position correcting mirror. A quasi-Gaussian mode is transmitted through mode corrugated waveguide and is radiated to a free space through a corrugated waveguide input end. The rotating parabolic reflector receives the quasi-Gaussian wave beam. After focusing and reflection, the wave beam irradiates the phase position correcting mirror, phase distribution is adjusted and the phase difference of the wave beam cross section is eliminated so that the wave beam satisfies Gaussian distribution in the phase and field strength and can be well coupled to the corrugated waveguide corresponding to the output window.

Description

Technical field: [0001] The invention relates to a terahertz quasi-Gaussian beam transmission beamforming system applied to DNP-NMR, and belongs to the technical field of high-power terahertz wave transmission. Background technique: [0002] Nuclear magnetic resonance (Nuclear Magnetic Resonance, NMR) is an atomic nucleus whose magnetic moment is not zero. Under the action of an external magnetic field, the spin energy level undergoes Zeeman splitting, and the physical process of resonantly absorbing electromagnetic radiation of a certain frequency. Due to the high resolution of NMR spectroscopy, as a spectral analysis method, NMR has been widely used in the fields of physics, chemistry, materials science and biomedicine. The NMR signal intensity is proportional to the difference Δn between the number of particles on the high energy level and the low energy level. However, due to the small interval of nuclear spin energy levels, the energy level interval is the smallest in a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/08
CPCG01N24/08
Inventor 刘頔威沈皓宋韬王维
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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