Band-Selective Enhanced Quantum Well Infrared Focal Plane for Hyperspectral Imaging
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of hyperspectral imaging and trapping infrared focus, applied in optical radiation measurement, measurement device, radiation pyrometry, etc., can solve the problems of inability to exhibit resonance characteristics, low optical coupling efficiency, etc., to improve the response rate and the response rate. Effect
Active Publication Date: 2017-05-03
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
View PDF1 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Since the dielectric grating cannot exhibit resonance characteristics for optical coupling, the optical coupling efficiency is low
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0028] Embodiment 1: By designing different line widths s for multiple pixels to achieve the resonance wavelength of different enhanced responsivity, the upper metal is a two-dimensional metal square array, and the line width s takes 7 different values, which are 5.1 . The value of the period p remains constant at 10 microns.
Embodiment 2
[0029] Embodiment 2: By designing different line widths s for multiple pixels to regulate the resonance wavelengths of different enhanced responsivity rates, the upper metal is a one-dimensional metal stripe array, and the line width s takes 7 different values, which are 5.1, 5.3, 5.5, 5.7, 5.9, 6.1, 6.3 microns, the corresponding resonance wavelengths are 13.0, 13.5, 13.8, 14.1, 14.4, 14.8, 15.2 microns respectively. The value of the period p is s+2 microns.
Embodiment 3
[0030] Embodiment 3: By designing different line widths s to achieve different resonance wavelengths of enhanced responsivity, the upper metal is a single metal stripe, and the line width s takes 7 different values, which are 5.1, 5.3, 5.5, and 5.7 respectively. , 5.9, 6.1, 6.3 microns, the corresponding resonance wavelengths are 13.0, 13.5, 13.8, 14.1, 14.4, 14.8, 15.2 microns, respectively. Only one plasmonic microcavity is placed in each pixel.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a waveband selective enhancement quantum well infrared focal plane applied to hyperspectral imaging. A plasmon micro cavity is integrated on a QWIP focal plane pixel, the micro cavity can effectively capture incident photons and localize the incident photons in the plasmon micro cavity to form a transversely-propagated fabry-perot resonating standing wave, coupling with the QWIP in the micro cavity is carried out, a light current is converted, and thus, the response rate performance of the focal plane device is enhanced. The central wavelength of the resonating standing wave is decided by the geometrical size of the micro cavity, micro cavities with different sizes are designed and prepared on different focal plane pixels to enable the pixels to have different response peak wavelengths, and pixel waveband selective response is formed. The selected wavebands and hyperspectral spectral bands are distributed on the focal plane pixel correspondingly, the pixel response rate of each waveband in the hyperspectral imaging application can be selectively enhanced, and the detection sensitivity of the entire hyperspectral imaging focal plane is thus enhanced.
Description
technical field [0001] The invention relates to an infrared focal plane detector that selectively enhances the responsivity of a quantum well infrared detector in hyperspectral imaging applications, specifically refers to a hyperspectral imaging quantum well infrared detector that enhances the responsivity by plasmon microcavity optical coupling. focal plane device. Background technique [0002] Spectral analysis, especially infrared spectral analysis, can reflect the atomic and molecular vibration information of the measured object, reveal its microstructure and chemical composition and other indicators, so it has become an important means in natural science research. Spectral imaging technology is a new photoelectric imaging detection technology. While detecting the optical intensity distribution of the target object, it also detects the corresponding spectral distribution of the object. Detection, but the band division of the spectrum is much finer. Spectral imaging has...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/09H01L27/146G01J5/20
CPCG01J5/20G01J2005/204H01L27/146H01L31/09
Inventor 李志锋景友亮陆卫李宁陈效双陈平平李天信王文娟甄红楼王少伟
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI