A terahertz frequency measurement device and method
A frequency measurement and terahertz technology, applied in the field of electromagnetic wave detection, can solve problems such as measurement errors, weak terahertz signals, lack of high-sensitivity detectors, etc., and achieve the effect of improving convenience
Active Publication Date: 2022-03-22
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology
In practice, often due to weak terahertz signals, lack of high-sensitivity detectors and grid mirrors, fine enough interference peaks cannot be obtained, the detection signal-to-noise ratio is low, and even beam collimation, operation and stepping problems There is a measurement error
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.
[0034] The purpose of the present invention is to provide a terahertz frequency measurement device and method, which converts the terahertz frequency to near infrared for measurement, and can improve the convenience of measuring the terahertz frequency.
[0035] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompan...
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Abstract
The invention relates to a terahertz frequency measurement device and method. The device includes: a pump light generating module, a nonlinear crystal, a near-infrared measurement module and a signal processing module; the pump light generating module is used to generate pump light and transmit the pump light to the nonlinear crystal; nonlinear crystal setting At the intersection of the pump light and the terahertz wave to be measured; the nonlinear crystal transmits the signal light and pump light to the near-infrared measurement module; the near-infrared measurement module is set on the outgoing light path of the nonlinear crystal, and the near-infrared measurement module is used for Measure the wavelength of the signal light and the wavelength of the pump light; the signal processing module is used to calculate the frequency of the terahertz wave to be measured according to the wavelength of the signal light and the wavelength of the pump light. The invention converts the terahertz frequency to near-infrared for measurement, which can improve the convenience of measuring the terahertz frequency.
Description
technical field [0001] The invention relates to the technical field of electromagnetic wave detection, in particular to a terahertz frequency measurement device and method. Background technique [0002] Terahertz (THz) wave is a high-frequency electromagnetic wave with a frequency in the range of 0.1THz-10THz, which is located in the frequency range between millimeter waves and infrared light that has not been fully studied so far. Due to the particularity of its frequency band, terahertz waves It has the characteristics of strong penetrability, high signal-to-noise ratio, wide frequency band, and low radiation, so it is widely used in communication (broadband communication), radar, electronic countermeasures, electromagnetic weapons, astronomy, medical imaging (unmarked genetic inspection, imaging at the cell level) ), non-destructive testing, safety inspection (biochemical inspection) and other fields have extremely wide application requirements and values. But it is prec...
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IPC IPC(8): G01J9/00
CPCG01J9/00
Inventor 秦瑀孔维鹏周逊李赜宇严强邹明芮
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS