Quantum dot embedded integrated micro-cavity monochromatic light source array

A monochromatic light source and quantum dot technology, which is applied in the field of quantum dot embedded integrated microcavity monochromatic light source arrays, can solve the problems that monochromatic light sources and single photon sources cannot be integrated, and achieve high integration, good monochromaticity, and device small size effect

Inactive Publication Date: 2015-04-22
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The purpose of the present invention is to propose a quantum dot embedded integrated microcavity monochromatic light source array, which can meet the application requirements of integrated monochromatic light sources and even integrated single photon sources in some special structures and special occasions, and solve the problem of monochromatic light sources (even monochromatic light sources) photon source) cannot be integrated

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Embodiment 1

[0028] 1. Graphene quantum dots with a certain size distribution are prepared by conventional graphene quantum dot preparation methods. The specific preparation process is as follows: disperse the graphene oxide powder into N-dimethylformamide, ultrasonically transfer it to the reaction kettle, and react at 150-300°C for 5-20 hours. After the reaction, take the supernatant and carry out Rotary evaporation drying, thereby obtaining dry graphene quantum dots. Perform two-step gradient column chromatography on the dried graphene quantum dots to obtain green fluorescent graphene quantum dots, see invention patent: 201210421532.3, its luminescence spectrum and size distribution are as Figure 4 shown.

[0029] 2. According to Figure 4 For the luminescence spectrum of the quantum dots shown, an optical microcavity film system is designed based on its luminescence center, and it is required that the bandpass peaks of the film system are all distributed in the luminescence region o...

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Abstract

The invention discloses a quantum dot embedded integrated micro-cavity monochromatic light source array which comprises a substrate, a high quality factor optical micro-cavity array firmly combined with the substrate, quantum dots embedded in the optical micro-cavity array, an excitation light source and a long-wave-pass or band-pass optical filter arranged on the back side of the substrate and firmly combined with the substrate. According to the monochromatic light source array, frequency selection is carried out on light emitting of the quantum dots through a series of resonance cavities of different cavity lengths, and accordingly arrays of different wavelengths corresponding to monochromatic light in different space positions are formed and are small, the size and the shape of each wavelength light source unit can be designed at will, and monochromaticity is good. When a medium optical micro-cavity is adopted, material selection can not be limited by quantum dot lattice matching, quality factors can be very high and can even form single-photo sources or laser arrays of different wavelengths, and the quantum dot embedded integrated micro-cavity monochromatic light source array has important application value in the fields of quantum communication, micro spectrographs and the like.

Description

technical field [0001] The invention relates to a luminescent light source, in particular to a quantum dot embedded integrated microcavity monochromatic light source array. Background technique [0002] Commonly used monochromatic light sources are generally formed by white light sources such as halogen lamps and white LEDs after being split by a monochromator. The monochromator is usually bulky, which greatly limits the size of the light source, so it cannot meet the needs of objects such as micro-spectrometers and micro-projectors. Demand for miniature monochromatic light sources. [0003] If a monochromatic light source has a highly sub-Poisson distribution and emits only one photon in a time interval, it is called a single-photon source. The single photon source is the key component to realize the single photon qubit, optical quantum key transmission, optical quantum computing and quantum network. It will bring new changes to the transmission and processing of informat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/34
Inventor 王少伟冀若楠陆卫陈效双
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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