TWO-DIMENSIONAL TOPOLOGY PHOTONIC CRYSTAL CAVITY, DESIGN METHOD THEREOF AND APPLICATION IN LASER

Title:

TWO-DIMENSIONAL TOPOLOGY PHOTONIC CRYSTAL CAVITY, DESIGN METHOD THEREOF AND APPLICATION IN LASER

Document Type and Number:

WIPO Patent Application WO/2021/081697

Kind Code:

A1

Abstract:

A two-dimensional topology photonic crystal cavity, a design method thereof and an application in a laser. The two-dimensional topology photonic crystal cavity comprises multiple photonic crystal supercells, the multiple photonic crystal supercells having vortex-shaped structural variation around a center of the two-dimensional topology photonic crystal cavity, and bands of the multiple photonic crystal supercells having Dirac points at balanced positions of the vortex-shaped structural variation. The two-dimensional topology photonic crystal cavity, also called a Dirac vortex cavity, is characterized by having a large mode field area, a large free spectral range, a narrow light beam divergence angle, arbitrary mode degeneracy and compatibility with multiple types of substrate material, and may be used in a surface-emitting semiconductor laser, enabling stable single-transverse-mode and single-longitudinal-mode operation, while ensuring broad-area and high-energy output of a laser.

Inventors:

LU LING (CN)
YANG LECHEN (CN)
GAO XIAOMEI (CN)

Application Number:

PCT/CN2019/113621

Publication Date:

May 06, 2021

Filing Date:

October 28, 2019

Export Citation:

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Assignee:

INST PHYSICS CAS (CN)

International Classes:

G02B6/122; G02B27/00; H01S5/10

Foreign References:

CN106353853A	2017-01-25
CN106353853A	2017-01-25
US20140064310A1	2014-03-06
CN110007398A	2019-07-12
US20130279850A1	2013-10-24
CN110727047A	2020-01-24

Other References: