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A beam-controllable nanowire laser based on patterned growth

A nanowire and patterning technology, applied in the fields of micro-nano optics and optical nanomaterials, can solve the problems of low utilization rate of light energy, difficulty in controlling the direction of outgoing light, and scattering of outgoing light emitted by nanowires, and achieves simple structure and reliability. High, tunable range effects

Inactive Publication Date: 2018-06-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims at problems such as severe scattering of emitted light emitted by nanowires, difficulty in controlling the direction of emitted light, and low utilization rate of light energy within a unit area. method

Method used

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  • A beam-controllable nanowire laser based on patterned growth
  • A beam-controllable nanowire laser based on patterned growth
  • A beam-controllable nanowire laser based on patterned growth

Examples

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Embodiment 1

[0019] Embodiment 1: In this embodiment, zinc oxide nanowires with a diameter of 200nm are taken as an example. The material of the isolation medium 2 is silicon dioxide with a refractive index of 1.47 and a thickness of 100nm; the pattern is etched on the isolation medium by photolithography , the graphic area is a Fresnel focusing lens model composed of eight concentric rings, and the radii of each ring are 4.43 μm; 6.85 μm; 8.6 μm; 10.05 μm; 11.31 μm; 12.45 μm; 13.73 μm; The design focal length is 35 μm. The material of the semiconductor nanowire 1 is zinc oxide, the refractive index is 2.45, the diameter is 200 nm, and the length is 5 μm. The nanowires grow within the grooves of the patterned isolation dielectric. The unit Fresnel lens nanolaser has a diameter of 14.75 μm. The material of the substrate 3 is gallium nitride, and the volume is (length×width×height) 50 μm×50 μm×100 μm. In this embodiment, a glass cover is used for sealing; in this embodiment, the volume of...

Embodiment 2

[0021] Embodiment 2: In this embodiment, a zinc oxide nanowire with a diameter of 100 nm is taken as an example, the length of the nanowire 4 is 1 μm, and the designed focal length of the nanowire laser is 20 μm, and the rest are the same as in Embodiment 1. In this embodiment, due to the short design focal length, the nanowires are thinner and denser. After calculation, the actual focal length of the nanowire laser is 19 μm, and the light intensity at the focus center is 480 times that of the incident light intensity, which corresponds to a higher light intensity.

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Abstract

The invention belongs to a beam-controllable nanowire laser based on patterned growth, belongs to the field of micro-nano optics and optical nanomaterials, and particularly relates to a nanowire laser. The beam-controllable nanowire laser includes a substrate, an isolation medium, a pattern groove opened in the isolation medium, and a nanowire array grown in the groove. The invention combines the luminescence characteristics of nanowires with the design of micro-nano beam control lenses, and creates a patterned area for beam control for the growth of nanowires, so that the outgoing light of nanowires can be collimated, focused and other beam controls. Therefore, the disadvantages of serious light scattering and low energy utilization rate of the nanowires are overcome. Improve the practical application of nanowire lasers in miniaturized and integrated optical devices.

Description

technical field [0001] The invention belongs to the field of micro-nano optics and optical nanomaterials, in particular to a nanowire laser. Background technique [0002] Since the 1990s, nanotechnology has developed rapidly. Compared with traditional bulk materials, nanomaterials have many unique properties, such as surface effects, quantum size effects, etc., and thus attract more and more people to engage in related fields. Research. The research on nano-luminescent materials based on zinc oxide, silver, gallium nitride, cadmium sulfide and other materials has attracted widespread attention of scientists. These luminescent nanomaterials have had a far-reaching impact on optics, information, military and other fields. [0003] In these years of research, various nanowire laser structures with different shapes have been prepared one after another, and their optical, electrical, magnetic, catalytic and other properties have also been revealed one by one. However, there ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/24
Inventor 赵青焦蛟黄小平林恩
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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