Quantum dot embedded integrated micro-cavity monochromatic light source array

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...

AI Technical Summary

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

Images