Unlock instant, AI-driven research and patent intelligence for your innovation.

Nano-chiral optical antenna for directional radiation of fluorescence and preparation method thereof

A directional radiation, optical antenna technology, applied in the direction of polarizing elements, etc., can solve the problems of restricting the development of miniaturization and integration, large size of optical devices, etc., to achieve the effect of improving operability

Active Publication Date: 2020-02-21
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The large size of traditional optical devices and the existence of diffraction limit limit the development of their miniaturization and integration

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nano-chiral optical antenna for directional radiation of fluorescence and preparation method thereof
  • Nano-chiral optical antenna for directional radiation of fluorescence and preparation method thereof
  • Nano-chiral optical antenna for directional radiation of fluorescence and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] See figure 1 , a nano-chiral optical antenna for directional radiative fluorescence, including a substrate 1 , a metal microstructure 2 and free electrons 3 .

[0032] The gold nanostructure 2 is built on the silicon dioxide substrate 1. The gold nanostructure is a Yagi-like antenna array structure composed of five left-handed chiral units. The center-to-center spacing of each unit structure is 275nm, and the total length of the Yagi-like antenna array structure is 1400nm. The center position of the leftmost unit of the 30KeV free electron 3 vertical excitation array structure, the data is extracted through a monitor 100nm high from the substrate, projected to the far field 1m away, and then the E of the electric field is extracted θ , Then spatially integrated in the upper hemisphere, the intensities of left-handed light (LCP) and right-handed light (RCP) are calculated separately.

[0033]

[0034]

[0035] When studying the far-field radiation direction of ...

Embodiment 2

[0042] See Figure 4 , a nano-chiral optical antenna for directional radiative fluorescence, including a substrate 1 , a metal microstructure 2 and free electrons 3 .

[0043]The silver nano-microstructure 2 is built on the silicon dioxide substrate 1. The silver nano-microstructure is a Yagi-like antenna array structure composed of three left-handed units and two right-handed units. The size of the five unit structures is exactly 400nm× 400nm×100nm, the distance between the centers of each unit structure is 450nm, and the total length of the Yagi-like antenna array structure is 2200nm. The 50KeV free electrons 3 act vertically on the center of the middle unit cylinder, and the data is extracted through a monitor 100nm high from the substrate, projected to the far field 1m away, and then the E of the electric field is extracted θ , Then spatially integrated in the upper hemisphere, the intensities of left-handed light (LCP) and right-handed light (RCP) are calculated separa...

Embodiment 3

[0053] See Figure 7 , a nano-chiral optical antenna for directional radiative fluorescence, including a substrate 1 , a metal microstructure 2 and free electrons 3 .

[0054] The aluminum nano-microstructure 2 is built on the magnesium fluoride substrate 1. The aluminum nano-microstructure is a Yagi-like antenna array structure composed of two left-handed units, two right-handed units and a symmetrical unit. The size of the five unit structures is 600nm. ×600nm×70nm, the center-to-center spacing of each unit structure is 650nm, and the total length of the Yagi-like antenna array structure is 3200nm. The 100KeV free electrons 3 act vertically on the center of the middle unit cylinder, and the data is extracted through a monitor 100nm high from the substrate, projected to the far field 1m away, and then the E of the electric field is extracted θ , Then spatially integrated in the upper hemisphere, the intensities of left-handed light (LCP) and right-handed light (RCP) are ca...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Radiusaaaaaaaaaa
Long axisaaaaaaaaaa
Login to View More

Abstract

The invention discloses a nano-chiral optical antenna for directional radiation of fluorescence and a preparation method thereof. The nano-chiral optical antenna comprises a substrate, a metal microstructure and free electrons, wherein the chiral units of the metal microstructure are arranged on the substrate in a certain way, and the free electrons are struck vertically on the metal microstructure. In the invention, chiral metal microstructure is excited by free electrons with different energies to generate chiral cathode fluorescent radiation, and then the nano-chiral optical antenna array structure is used to guide electromagnetic waves to control the emitted direction of the generated chiral polarized light. The invention successfully emits cathode fluorescence with different chiralities to different spatial solid angles to realize the separation of left-handed and right-handed polarized light, can control the angle of emission by changing the arrangement of the units to improve the operability of the sub-wavelength-scaled chiral polarized light, and is convenient to reduce the size of optoelectronic devices and improve the integration.

Description

technical field [0001] The invention relates to a technology for adjusting a light field by a chiral optical antenna, in particular to a nano chiral optical antenna for directional radiation fluorescence and a preparation method thereof. Background technique [0002] With the development of miniaturization and integration of photodetector devices, it is required to control the chiral polarization state of light at the nanoscale, and the artificial microstructure has a strong ability to manipulate photons and can control the amplitude, phase, and polarization of photons at the nanoscale. , spin angular momentum can be controlled almost arbitrarily, which shows great potential in improving the electrical performance of detectors by optical means. [0003] The large size of traditional optical devices and the existence of diffraction limit limit the development of their miniaturization and integration. The surface plasmons generated by free electrons exciting the metal microst...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G02B5/30
CPCG02B5/30
Inventor 李冠海王九旭陶玲陈效双陆卫
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com