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Circularly polarized laser source coupling microcavity

A laser light source, coupled microcavity technology, used in optics, nonlinear optics, instruments, etc., can solve the problem of inability to achieve gain amplification, and achieve the requirements of enhancing Faraday rotation effect, enhancing interaction, gain and loss parameters. Effect

Inactive Publication Date: 2019-09-24
CHANGZHOU INST OF LIGHT IND TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this structure has loss, let alone gain amplification

Method used

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  • Circularly polarized laser source coupling microcavity
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  • Circularly polarized laser source coupling microcavity

Examples

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Effect test

Embodiment 1

[0023] A circularly polarized laser light source coupling microcavity is a one-dimensional layered structure distributed along the z axis and extending in the xoy plane. The microcavity is formed by coupling the ABCD layers with each other, and the structure is expressed as DADBDCD, where the D layer It is a metal material, A layer and C layer are electromagnetic wave gain and electromagnetic wave loss materials respectively, and B layer is a defect layer composed of magneto-optical materials. The thickness of each layer: the thickness of A and C is 400nm, the thickness of B layer is 800nm, and the thickness of D layer is 205nm. The metal material layer is silver, and its effective metal plasma frequency is 4×10 15 S -1 . The electromagnetic wave gain material is a neodymium alumina laser gain material, which is produced by dissolving high-concentration neodymium ions into alumina crystals. The electromagnetic wave loss material is graphene. The magneto-optic material is a...

Embodiment 2

[0025]A circularly polarized laser light source coupling microcavity is a one-dimensional layered structure distributed along the z axis and extending in the xoy plane. The microcavity is formed by coupling the ABCD layers with each other, and the structure is expressed as DADBDCD, where the D layer It is a metal material, A layer and C layer are electromagnetic wave gain and electromagnetic wave loss materials respectively, and B layer is a defect layer composed of magneto-optical materials. The thickness of each layer: the thickness of A and C is 400nm, the thickness of B layer is 800nm, and the thickness of D layer is 205nm. The metal material layer is silver, and its effective metal plasma frequency is 4×1015S-1. The electromagnetic wave gain material is a neodymium alumina laser gain material, which is produced by dissolving high-concentration neodymium ions into alumina crystals. The electromagnetic wave loss material is graphene. The magneto-optical material is a rare...

Embodiment 3

[0027] An elliptically polarized laser light source coupling microcavity is a one-dimensional layered structure distributed along the z axis and extending in the xoy plane. The microcavity is formed by coupling the ABCD layers with each other, and the structure is expressed as DADBDCD, where the D layer It is a metal material, A layer and C layer are electromagnetic wave gain and electromagnetic wave loss materials respectively, and B layer is a defect layer composed of magneto-optical materials. The thickness of each layer: the thickness of A and C is 400nm, the thickness of B layer is 800nm, and the thickness of D layer is 205nm. The metal material layer is silver, and its effective metal plasma frequency is 4×1015S -1 . The electromagnetic wave gain material is a neodymium alumina laser gain material, which is produced by dissolving high-concentration neodymium ions into alumina crystals. The electromagnetic wave loss material is graphene. The magneto-optical material is...

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Abstract

A circularly polarized laser source coupling microcavity is a one-dimensional layered structure distributed along a z-axis and extending in a xoy plane. The microcavity is formed by coupling ABCD layers, and has a structure represented as DADBDCD, wherein the D layer is prepared from a metal material, the A layer and the C layer are prepared from an electromagnetic wave gain material and an electromagnetic wave loss material respectively, and the B layer is a defect layer prepared from a magneto-optical material. The laser amplification and circular polarization output are integrated by the coupled resonance of a conjugate microcavity and a magnetic microcavity. The microcavity has relatively low requirements for the gain and loss parameters of the C layer and the A layer for the formation of the circularly polarized laser output, and is very advantageous for the design of an actual device. The result of the present invention is actually the result of the interaction and coupling of various physical processes, and provides a new idea for designing a novel circularly polarized laser source.

Description

technical field [0001] The invention relates to a circularly polarized laser light source, in particular to an integrated structure for obtaining circular polarization and laser output by using a gain and loss microcavity, a magnetic microcavity and a metal layer to form a composite structure system. Background technique [0002] The circularly polarized laser has little change in atmospheric transmission, and the circularly polarized light has rotational symmetry. The performance of the system is not affected by the relative motion of the two communication terminals, which reduces the difficulty of technical implementation and has high reliability. Therefore, in There are important applications in the field of mobile communication terminals and free space optical communication. However, the existing semiconductor lasers can only generate linearly polarized beams with a fixed direction, and cannot emit linearly polarized light or circularly polarized light polarized in any d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/09G02F1/01
CPCG02F1/0136G02F1/09
Inventor 朱宇光
Owner CHANGZHOU INST OF LIGHT IND TECH
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