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Spectrometer and metasurface light splitting device

A metasurface and spectrometer technology, which is applied in the field of spectrometers and metasurface spectroscopic devices, can solve the problems of difficult design, processing, assembly and adjustment, and large phase changes of metasurfaces, and achieves the effect of reducing difficulty and easy realization.

Pending Publication Date: 2022-01-07
SHENZHEN METALENX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although spectrometers using metasurfaces have been demonstrated, the phase change of off-axis focusing metasurfaces is large, which poses great challenges to the design and processing of metasurfaces; Multiple reflections and splitting in the planar cavity, making design, processing and assembly difficult

Method used

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  • Spectrometer and metasurface light splitting device
  • Spectrometer and metasurface light splitting device
  • Spectrometer and metasurface light splitting device

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no. 1 approach

[0026] According to an embodiment of the present invention, a spectrometer is provided. The spectrometer uses a reflective curved metasurface device based on a curved substrate. image 3 A schematic representation of a spectrometer according to an embodiment of the invention is shown. Such as image 3 As shown, the spectrometer includes:

[0027] At least one reflective curved metasurface device 310 is used to split light of different wavelengths, and has a curved substrate and a nanostructure layer. The processing method of the reflective curved metasurface device 310 may be, for example, directly processing nanostructures on the curved substrate, for example, attaching the processed nanostructures vertically downward to the curved surface.

[0028] The detector 320 is configured to receive the focused light formed by light splitting by the reflective curved metasurface device. The detector 320 can adopt, for example, CCD and CMOS.

[0029] Such as image 3 As shown, th...

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Abstract

The invention provides a spectrometer and a metasurface light splitting device. The spectrometer comprises at least one reflection type curved surface metasurface device which is used for realizing light splitting of light with different wavelengths and is provided with a curved surface substrate and a nano structure layer, and a detector which is used for receiving focused light formed after light splitting of the reflection type curved surface metasurface device. According to the technical scheme of the invention, the reflection type curved surface metasurface device is adopted to realize light splitting, and one part of focal power for realizing light focusing can be transferred to the curved surface substrate, so that the difficulty of nanostructure design and processing is greatly reduced, and a compact spectrometer is easier to realize.

Description

technical field [0001] The invention relates to spectroscopic technology, in particular to a spectrometer and a metasurface spectroscopic device. Background technique [0002] A spectrometer is a scientific instrument that decomposes complex light into spectral lines. It is composed of a prism or a diffraction grating. The spectrometer can measure the light reflected by the surface of an object. [0003] Existing spectrometers include: grating-based spectrometers, narrow-band filter array-based spectrometers, off-axis metasurface-based spectrometers, etc. Spectrometers based on gratings and off-axis metasurfaces split light through different diffraction angles of different wavelengths; narrowband filter array spectrometers achieve spectroscopic measurement by directly sampling and extracting characteristic spectra. Spectral encoding is a new type of spectral measurement method, which obtains the spectral information of the incident light by reconstructing the spectral encod...

Claims

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Application Information

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IPC IPC(8): G01J3/02G01J3/28G02B5/00
CPCG01J3/021G01J3/2803G02B5/00
Inventor 郝成龙谭凤泽朱健
Owner SHENZHEN METALENX TECH CO LTD