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a kind of vo x Terahertz uncooled focal plane detector assembly

A focal plane detector, terahertz technology, applied in the field of imaging and terahertz detection, can solve the problems of small array size, long imaging period, low sensitivity, etc., and achieve the effect of fast response speed, short imaging time and high sensitivity

Active Publication Date: 2016-08-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

At present, the commonly used THz detector types are mainly Si, Ge and InSb bolometers (Bolometers) cooled by liquid helium, Golay detectors (Golay Cells), Schottky diodes, field effect transistors, etc., and are available in the market. Most of the practical products are unit detectors, which can only use scanning imaging mode for imaging, the imaging period is long, the resolution is low, and it is difficult to meet the needs of practical applications; although there are a few pyrothermal detectors that can work in the THz band Electric (Pyroelectric) focal plane detector, but its sensitivity is low, the array size is small (about 120×120), and the price is high
This has greatly restricted the further research and application of THz imaging technology

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  • a kind of vo <sub>x</sub> Terahertz uncooled focal plane detector assembly
  • a kind of vo <sub>x</sub> Terahertz uncooled focal plane detector assembly
  • a kind of vo <sub>x</sub> Terahertz uncooled focal plane detector assembly

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Embodiment Construction

[0019] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0020] In recent years, high-performance, low-cost uncooled focal plane detector technology has been developed rapidly, and has been widely used in the field of infrared thermal imaging. At present, the relatively mature uncooled infrared focal plane detectors for infrared detection mainly include pyroelectric and microbolometers, of which microbolometers mainly include VO x and polysilicon. VO x The uncooled focal plane detector has a wide spectral response range in theory, even in the THz band, so it has a basis for application in the THz band. VO x Compared with pyroelectric uncooled focal plane detectors, uncooled focal plane detectors have higher sensitivity. Compared with the currently commonly used unit detectors, it is an area array detector that does not require scanning imaging, so the response speed is fast and the imaging time is short.

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Abstract

The invention discloses a VOx terahertz uncooled focal plane detector component, which is short in imaging time and high in sensitivity. The VOx terahertz uncooled focal plane detector component comprises a VOx terahertz uncooled focal plane detector, a frame frequency and integration time adjustable detector driving circuit and a detector signal processing part, wherein the frame frequency and integration time adjustable detector driving circuit is used for driving the VOx terahertz uncooled focal plane detector to work, and regulating the frame frequency and the exposure time of the VOx terahertz uncooled focal plane detector according to application requirements; the VOx terahertz uncooled focal plane detector is used for imaging the terahertz radiation of a target scenario onto a focal plane, and further outputting the imaged terahertz radiation to the detector signal processing part; and the detector signal processing unit is used for receiving a signal output by the VOx terahertz uncooled focal plane detector, and finishing the image signal processing of terahertz imaging.

Description

technical field [0001] The invention relates to the technical field of terahertz detection and imaging, in particular to a vanadium oxide compound (VO x ) Terahertz uncooled focal plane detector assembly. Background technique [0002] Terahertz (THz) waves refer to electromagnetic waves with a frequency between 0.1-10THz (wavelength 30μm-3mm), between millimeter waves (usually 1-10mm) and infrared waves (usually 1-20μm), That is, it is generally considered the junction area of ​​electronics and optics, so its properties are different from those of electronics and optics. In recent years, due to the characteristics of transient, broadband, high temporal and spatial coherence, low energy and unique transmission characteristics of terahertz waves, it has been widely used in spectrum analysis, security monitoring, imaging and communication, chemistry, biology, materials, etc. The fields of science and pharmacy show a wide range of application prospects, and become one of the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/10
Inventor 金伟其王霞田莉徐超李力
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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