Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for realizing two-dimensional cold atom surface optic lattices by circular aperture array

A surface optics, cold atom technology, applied in radiation/particle processing, nuclear engineering, etc., can solve problems such as optical lattice bottlenecks

Inactive Publication Date: 2013-08-07
JIANGSU UNIV
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although great achievements have been made in the study of atomic optical lattices, due to the influence of the diffraction limit of light, the characteristic scale of the light field of traditional atomic optical lattices can only be limited to the linear range of the half-wavelength order. On the micron scale, so this will bring some deficiencies to the basic research and technical characteristics of atomic optical lattices
At the same time, with the continuous development of microfabrication technology and integrated optics, the continuous miniaturization of optical components has approached the diffraction limit of light, which will lead to a bottleneck in the nanoscale atomic optical lattice

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
  • Method for realizing two-dimensional cold atom surface optic lattices by circular aperture array
  • Method for realizing two-dimensional cold atom surface optic lattices by circular aperture array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Using the finite difference time domain method (FDTD) to simulate the figure 1 The shape of the sub-wavelength circular aperture array 4 of the two-dimensional cold atomic surface optical lattice 5 can be realized, and the drawing software is used to design and draw the drawing.

[0024] (2) Coating a layer of noble metal (such as silver) thin film on the flat silicon wafer by magnetron sputtering method, and then use the femtosecond laser processing system to process periodic circular apertures on the noble metal thin film, and process the figure 1 Subwavelength circular aperture arrays in 4 .

[0025] (3) Use the bracket to place figure 1 The subwavelength circular aperture array 4 in the medium is placed horizontally, the installation is fixed in place, and the noble metal thin film part faces upward.

[0026] (4) figure 1 Medium light source system 1 consists of figure 2 It consists of laser 8, chopper 9, focusing lens 10 and optical fiber 11. Adjust the l...

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

No PUM Login to View More

Abstract

The invention discloses a method for realizing two-dimensional cold atom surface optic lattices by a circular aperture array and relates to the field of neutral cold atom laser imprison and cold atom optic lattices. The method is implemented by a laser source system, a focusing lens, a beam expanding lens, a sub-wavelength circular aperture array, two-dimensional cold atom surface optic lattices, magneto-optical trap atom optic viscose, an atom detector, a laser, a wave chopper, another focusing lens, an optical fiber and a computer system on the basis of near-field optic diffraction of the sub-wavelength circular aperture array. Laser light irradiates on the horizontally arranged sub-wavelength circular aperture and diffracts through the same, local reinforcing near optical fields distributed periodically are generated, and neutral cold atoms loaded can be effectively imprisoned, and two-dimensional cold atom surface optic lattices are realized. The method for realizing two-dimensional cold atom surface optic lattices can realize surface optic lattices of neutral cold atoms of different types, lattice constant is adjustable, principle is simple, operation is convenient, and application range is wide.

Description

technical field [0001] The invention relates to the field of cold-atom optical lattices, in particular to a method for realizing a two-dimensional cold-atom surface optical lattice with a circular aperture array, and is applicable to any type of neutral cold-atom optical lattice. Background technique [0002] In recent years, the study of atomic optical lattices based on one-dimensional, two-dimensional and three-dimensional standing wave laser fields has become one of the research hotspots in the field of cold atom physics and atomic optics. This technique has been gradually applied to the confinement and control of cold atoms and Bose-Einstein condensates (BEC), dynamics of polarization gradient cooling and trapping, Raman cooling and adiabatic cooling, quantum transport and tunneling, etc. in the research. In micro-optical trap arrays, especially in the research of quantum information, optical lattices and atom chips, it is of great significance to use surface atomic opt...

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): G21K1/00
Inventor 王正岭姜文帆王艳丽
Owner JIANGSU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products