Method and system for realizing tunable surface plasmon polariton frequency division

A surface plasmon and broadband technology, applied in the field of plasmon frequency division, can solve the problems that tunable plasmon frequency division components have not been realized.

Inactive Publication Date: 2019-07-19
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as one of the core components in the nanometer optical circuit, the tunable plasmonic frequency division element has not yet been realized

Method used

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  • Method and system for realizing tunable surface plasmon polariton frequency division
  • Method and system for realizing tunable surface plasmon polariton frequency division
  • Method and system for realizing tunable surface plasmon polariton frequency division

Examples

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Embodiment 1

[0070] 1. Using femtosecond pulsed laser radiation with a center wavelength of 400nm to etch the surface of the silver thin film with micro-nano groove structure, the size of the groove structure is 1×40 μm and 1×20 μm. The laser spot completely covers the groove structure and the horizontal projection of the wave vector of the incident light is along the long axis (x axis) of the groove structure. Such as image 3 , image 3 It is a schematic diagram of a femtosecond pulsed laser irradiating on the surface of a silver nanofilm with a groove-shaped structure etched.

[0071] image 3 Medium K S Represents the wave vector of the SPP, whose direction is consistent with the propagation direction of the SPPs, K L is the component of the incident light wave vector projected on the sample surface, K B is the "wave vector" of the interference signal in the PEEM image.

[0072] 2. By adjusting the polarization direction of the incident laser and controlling the groove structure ...

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Abstract

The invention discloses a method and system for realizing tunable surface plasmon polariton frequency division. The method for realizing tunable surface plasmon polariton frequency division comprisesthe following steps: preparing a metal film on a substrate; etching a micro-nano channel structure on the metal film by using a micro-nano processing technique; irradiating the long-axis direction ofthe micro-nano channel structure with a laser to excite the broadband surface plasmon polaritons; controlling a polarization direction of the laser and a size of the micro-nano channel structure to efficiently excite the broadband surface plasmon polaritons; and adjusting the wavelength of the laser to perform frequency division on the broadband surface plasmon polaritons after the high-efficiencyexcitation. By means of the method or system for realizing the tunable surface plasmon polariton frequency division, the tunable frequency division of the broadband surface plasmon polaritons can berealized.

Description

technical field [0001] The invention relates to the field of surface plasmon frequency division, in particular to a method and system for realizing tunable surface plasmon frequency division. Background technique [0002] The miniaturization and integration of optoelectronic devices is a prerequisite for efficient information transmission. Due to the restriction of the optical diffraction limit, traditional optical components cannot realize the transmission and processing of information at the sub-wavelength scale. This seriously hinders the development of miniaturization and integration of optoelectronic devices. Surface plasmon polaritons (SPPs) can confine energy to sub-wavelength scales and have propagation speeds close to the speed of light. Compared with traditional optical components, plasmonic components can manipulate and transmit information on a sub-wavelength scale, which is the key to realizing ultra-high-speed, miniaturized optoelectronic devices and breaking...

Claims

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Application Information

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IPC IPC(8): G02B5/00G02B6/122G02B6/125G02B6/136
CPCG02B5/008G02B6/1226G02B6/125G02B6/136
Inventor 林景全秦楡禄
Owner CHANGCHUN UNIV OF SCI & TECH
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