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Device for generating stable and controllable plasma photonic crystals and method thereof

A plasma and photonic crystal technology, applied in the field of plasma photonic crystal generation devices, can solve the problems of poor reproducibility and controllability

Inactive Publication Date: 2016-04-13
HEBEI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] One of the purposes of the present invention is to provide a device for producing stable and controllable plasma photonic crystals, so as to solve the problems of poor reproducibility and controllability of existing devices when forming plasma photonic crystals

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  • Device for generating stable and controllable plasma photonic crystals and method thereof
  • Device for generating stable and controllable plasma photonic crystals and method thereof
  • Device for generating stable and controllable plasma photonic crystals and method thereof

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Embodiment Construction

[0036] Such as figure 1 As shown, the device for generating a stable and controllable plasmonic photonic crystal provided by the present invention includes a femtosecond laser 1 , a lens group 2 , an adjustable aperture 3 , a microlens array 4 and a dielectric barrier discharge unit 5 arranged in sequence.

[0037] The femtosecond laser 1 is used to emit TW (terawatt) level or even PW (petawatt) level femtosecond ultra-intense pulse laser. The lens group 2 is composed of a concave lens 9 and a convex lens 10. The concave lens 9 is located in front of the convex lens 10, and the virtual focal point in front of the concave lens 9 (that is, the left side of the concave lens 9 in the figure) and the real focus point in front of the convex lens 10 (that is, the left side of the convex lens 10 in the figure) coincide. The femtosecond ultra-intensive pulsed laser emitted by the femtosecond laser 1 first diverges through the concave lens 9, and then converges through the convex lens ...

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Abstract

The invention provides a device for generating stable and controllable plasma photonic crystals and a method thereof. The device comprises a femtosecond laser, a lens group, an adjustable diaphragm, a micro-lens array and a dielectric barrier discharge unit. The lens group includes a concave lens and a convex lens which are arranged in turn. The dielectric barrier discharge unit comprises two opposite liquid electrodes and an AC power supply which is electrically connected with the two liquid electrodes. The focal plane of the micro-lens array is arranged in a discharge gap between the two liquid electrodes. Laser is utilized to initiate discharge, laser is enabled to form periodic plasma filament structures in the gas through the micro-lens array, and stable and controllable plasma photonic crystals of different symmetries are formed by the "memory effect" of dielectric barrier discharge so that the disadvantages of poor reproducibility and controllability due to the fact that existing devices realize the plasma photonic crystals of different symmetries by purely relying on the nonlinear self-organization method of discharge filaments can be overcome.

Description

technical field [0001] The invention relates to a device for generating plasma photonic crystals, in particular to a device and method for generating stable and controllable plasma photonic crystals. Background technique [0002] With the advent of the 21st century, human civilization has entered the information age, and the use of semiconductors has completely changed people's lives. Mobile phones, computers, and televisions have become an indispensable part of people's lives. The basis of the "information age" that people bathe in is the energy band theory of semiconductors to control electrons. In recent years, in order to further meet the needs of speed and compatibility, people have gradually turned their attention from the "electronic control" of semiconductors to the "photonic control" of photonic crystals. Just like semiconductors are to electrons, photonic crystals, as "semiconductors" in the optical information age, control light propagation through energy band st...

Claims

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Application Information

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IPC IPC(8): G02B1/00H05H1/24
CPCG02B1/005H05H1/2406
Inventor 范伟丽董丽芳
Owner HEBEI UNIVERSITY
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