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Scanning near field optical microscope apparatus and novel fiber probe structure

A technology of scanning near-field optics and fiber optic probes, applied in scanning probe technology, scanning probe microscopy, measuring devices, etc., can solve the problems of long system scanning time, low efficiency of longitudinal field coupling, and low efficiency of target signal collection and other issues to achieve the effect of maintaining integrity and improving signal collection efficiency

Inactive Publication Date: 2016-12-07
SHENZHEN UNIV
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Problems solved by technology

[0006] The invention provides a scanning near-field optical microscope device and a novel fiber probe structure, which solves the technical problems of low longitudinal field coupling efficiency of scanning near-field optical microscopes in the prior art, resulting in low target signal collection efficiency and long system scanning time

Method used

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  • Scanning near field optical microscope apparatus and novel fiber probe structure
  • Scanning near field optical microscope apparatus and novel fiber probe structure

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Embodiment Construction

[0014] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] First, the general principle of surface plasmon coupled directional emission is introduced, as follows:

[0016] Under the action of surface plasmon (Surface Pasom, SP), the energy of the nanoradiator located on the surface of the smooth metal film can effectively pass through the metal film and re-radiate at the excitation angle of SP. This phenomenon of directional excitation of surface plasmon is called Surface Plasmon Coupled Emission (SPCE). The following introduces a scanning near-field optical microscope device provided by an embodiment of the present invention based on the general principle of surface plasmon coupling directional emission, such as figure 1 As shown, it includes: an optical illumination system 1, a ...

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Abstract

The invention relates to the technical field of near field optical sensing and imaging, and discloses a scanning near field optical microscope (SNOM) apparatus and a novel fiber probe structure. The SNOM apparatus includes: an optical lighting system (1), a probe scanning control system (2), a detection system (3) and an optical probe (4). The optical probe (4) has an end face which is provided with a metal membrane and metal particles. The metal particles are processed on the metal membrane of the end face of the optical probe (4). According to the invention, the SNOM apparatus and the novel fiber probe structure address the defect of inability of traditional SNOMs to conduct effective detection on longitudinal components of an optical field due to sensitivity to transverse components of the optical field, maintain completeness of sampled information, and increase the efficiency of signal collecting.

Description

technical field [0001] The invention relates to the technical field of optical sensing and imaging of near-field optical detection, in particular to a scanning near-field optical microscope device and an optical fiber probe structure. Background technique [0002] As a kind of SPM (Scanning Probe Microscope, SPM), scanning near field optical microscope (Scanning near field optical microscope, SPM) converts the evanescent field information bound on the surface of an object into a propagating field that can be detected in the far field through a needle tip. It is used in sample shape detection and special light field measurement. The fiber optic probe used by SNOM determines the imaging integrity of the scanning near-field optical microscope as well as the resolution and light signal collection efficiency. However, both theory and experiments show that the current general-purpose aperture-type SNOM fiber probe has higher coupling sensitivity to the transverse component of the...

Claims

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Application Information

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IPC IPC(8): G01Q60/18G01Q60/22
CPCG01Q60/18G01Q60/22
Inventor 杜路平杨爱萍袁小聪
Owner SHENZHEN UNIV
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