Infrared detector and system based on graphene Johnson noise measurement
An infrared detector and noise measurement technology, applied in the field of infrared measurement, can solve the problems of inaccurate infrared detection, infrared wavelength error, etc.
Active Publication Date: 2021-06-08
SOUTHWEST UNIV
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[0005] The purpose of the present invention is to, aiming at the deficiencies in the above-mentioned prior art, provide an infrared detector and system based on graphene Johnson noise measurement, to solve the problem in the prior art due to the specific heat capacity of the irradiated object and the time of being irradiated by infrared rays The error caused by the calculation of the wavelength of infrared rays makes the detection of infrared rays inaccurate
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[0027] 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. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0028] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...
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The invention relates to an infrared detector and system based on graphene Johnson noise measurement, in particular to the field of infrared measurement. The present application is provided with graphene, a first electrode and a second electrode inside the cavity, wherein the first electrode and the second electrode are respectively arranged on two opposite inner walls in the cavity, and one end of the graphene is arranged on the first On the electrode, the other end of the graphene is arranged on the second electrode, and the cavity wall of the cavity on the side of the graphene away from the first electrode and the second electrode is provided with a through hole, and the position of the through hole is consistent with the position of the graphene. In contrast, using infrared light to irradiate the graphene from the through hole, the graphene and the infrared light are coupled to increase the temperature of the graphene. By detecting the temperature change of the graphene, and according to the relationship between the temperature change of the graphene and the thermal noise, The thermal noise of the graphene at this time can be obtained, and the wavelength of the infrared light irradiated on the graphene can be directly obtained according to the corresponding relationship between the thermal noise and the wavelength of the infrared light.
Description
technical field [0001] The invention relates to the field of infrared measurement, in particular to an infrared detector and system based on graphene Johnson noise measurement. Background technique [0002] Infrared is an electromagnetic wave with a wavelength between microwaves and visible light, with a wavelength between 750 nanometers and 1 millimeter. It is an invisible light with a wavelength longer than red light. Infrared rays have a thermal effect and are widely used in communication, detection, medical treatment, military affairs, etc. Infrared rays are also commonly known as infrared light. [0003] In the prior art, the measurement of infrared rays mainly relies on detecting the temperature of the object irradiated by infrared rays, because the temperature of the object to be measured is related to the wavelength of infrared rays, the specific heat capacity of the irradiated object and the time of being irradiated by infrared rays. [0004] Due to the error in ca...
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IPC IPC(8): G01H9/00
CPCG01H9/00
Inventor 解宜原叶逸琛宋婷婷刘波成柴俊雄朱云超江潇
Owner SOUTHWEST UNIV