Semiconductor vortex light laser based on topological photons

A laser and semiconductor technology, applied in semiconductor lasers, optical waveguide semiconductor structures, lasers, etc., can solve the problems of large size and complex structure of devices, and achieve the effect of small size and good universality
CN113285346AInactive Publication Date: 2021-08-20BEIJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF POSTS & TELECOMM
Publication Date
2021-08-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a semiconductor vortex light laser based on topological photons, which belongs to the field of optoelectronic devices. The laser sequentially comprises a p electrode layer, a p-type ohmic contact layer, a two-dimensional photon topological structure layer, a refractive index guide layer, an active layer, an n-type ohmic contact layer and an n electrode layer from top to bottom. The two-dimensional photon topological structure is composed of a photonic crystal array with a photon spin-orbit coupling effect, each photonic crystal is formed by alternately stacking voltage layers and magnetic pressure layers, and vortex laser beams are generated through interaction of the two-dimensional photon topological structure on a light field in the active region. The spinning characteristic of laser output is changed through a two-dimensional topological photonics structure, and high-integration vortex laser output is effectively achieved.
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Description

technical field

[0001] The invention relates to the field of optoelectronic devices, in particular to a semiconductor vortex optical laser based on topological photons, and more specifically utilizes a photonic crystal array with a photonic spin-orbit coupling effect to form a two-dimensional photonic topological structure to design a semiconductor laser to generate a vortex laser. Background technique

[0002] With the development of optoelectronic science, the application range of lasers has been continuously expanded, covering various fields such as industry and commerce. Among them, semiconductor lasers show broad application prospects due to their wide wavelength range, low manufacturing cost, small size, light weight, and long life. The development of semiconductor physics has further improved and innovated the structure of lasers, and semiconductor lasers with different structures such as (multiple) quantum well lasers, distributed Bragg reflection lasers, distribute...

Claims

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