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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

Inactive Publication Date: 2021-08-20
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some studies have demonstrated the method based on vortex beam generation, but the large volume of the device and the overly complex structure have a great impact on its actual use.

Method used

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  • Semiconductor vortex light laser based on topological photons
  • Semiconductor vortex light laser based on topological photons
  • Semiconductor vortex light laser based on topological photons

Examples

Experimental program
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Embodiment Construction

[0017] Specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] From figure 1 It can be seen that a semiconductor vortex optical laser based on topological photons of the present invention comprises a p-electrode layer (1), a p-type ohmic contact layer (2), a two-dimensional photon topological structure layer (3), Refractive index guiding layer (4), active layer (5), n-type ohmic contact layer (7) and n-electrode layer (8). The laser is an edge-emitting laser, and the schematic diagram of the laser output is shown in figure 1 shown.

[0019] In the present invention, the structural schematic diagram of the two-dimensional photon topological structure layer (3) and the refractive index guiding layer (4) is as follows figure 2 shown. The refractive index guiding layer (4) is composed of a Bragg grating (41) and a waveguide coupling layer (42). The Bragg grating structure is embedded in the upper s...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/06H01S5/20
CPCH01S5/0607H01S5/2018
Inventor 饶岚忻向军何晓颖张琦杨雷静田清华尹霄丽田凤刘博
Owner BEIJING UNIV OF POSTS & TELECOMM
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