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Polarization-resolved Surface Plasmon Resonance Optical Measurement System

A technology of plasmon resonance optics and polarization resolution, which is applied in the fields of optical radiation measurement, color/spectral characteristic measurement, measuring device, etc., can solve the problems of high cost, high optical resolution, complex structure, etc., and reduce the workload and cost effects

Active Publication Date: 2022-01-11
WESTLAKE UNIV
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  • Abstract
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Problems solved by technology

At present, bright-field or dark-field scattering optical microscopy is mostly used to measure the scattering spectrum of plasmonic nanostructures. meta resonance

Method used

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  • Polarization-resolved Surface Plasmon Resonance Optical Measurement System
  • Polarization-resolved Surface Plasmon Resonance Optical Measurement System

Examples

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Embodiment 1

[0016] Embodiment 1: as figure 1 with figure 2 As shown, a polarization-resolved surface plasmon resonance optical measurement system includes an object stage, a plasmon nanostructure to be measured, a main spectrum measuring optical path, and an imaging optical path.

[0017] The stage is a two-dimensional or three-dimensional movable stage on which the sample with the plasmonic nanostructure is fixed. The stage is located at the confocal place of the two confocal light-gathering optical elements in the main optical path of the spectrum measurement, and the confocal is the overlapping focal point of the two light-gathering optical elements.

[0018] Such as figure 1 The main optical path of the spectrum measurement includes a white light source, optical fiber one 1 and optical fiber two 2, collimator one 1 and collimator two 2, a polarizer P1, a half-wave plate H1, two confocal focusing Optical optical elements F1 and F2, spectroscopic optical element B1 and a photodetect...

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Abstract

The invention relates to a polarization-resolved surface plasmon resonance optical measurement system, which includes an object stage, a plasmon nanostructure to be measured, a main optical path for spectrum measurement and an imaging optical path. In practical applications, it is only necessary to collect the transmitted light signals with the focus of the main optical path of the spectrum measurement inside and outside the area of ​​the plasmonic nanostructure to be measured, and the surface corresponding to the plasmonic nanostructure can be quickly obtained. The peak position and full width at half maximum of the plasmonic resonance greatly reduce the workload and cost of characterizing the optical properties of the polarization-resolved surface plasmon resonance, and provide an effective basis for the design and application of plasmonic nanostructures.

Description

technical field [0001] The invention designs a micro-nano photon spectrometry and imaging optical system, and in particular relates to a polarization-resolved surface plasmon resonance optical measurement system. Background technique [0002] Surface plasmon resonance is an electromagnetic oscillation formed during the interaction between photons and free electrons on the surface of plasmonic nanostructures. Because it can break through the diffraction limit and achieve local electromagnetic field enhancement, it is used in super-resolution imaging, biological Medical hyperthermia, Raman spectrum enhancement and other fields have been widely used. The optical characterization of surface plasmon resonance, such as the wavelength position of the resonant peak and the full width at half maximum of the resonant peak, makes full use of the resonance effect. Theoretically, the optical characterization of surface plasmon resonance can use not only the absorption spectrum and scatt...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G01N21/21G01J3/28G01J3/12
CPCG01N21/25G01N21/21G01J3/2823G01J3/12G01N2021/258G01N2021/217G01J2003/1291
Inventor 王纪永仇旻张磊
Owner WESTLAKE UNIV