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A space beam phase control device

A phase and light beam technology, applied in optical components, instruments, optics, etc., can solve the problems of large structural aspect ratio, difficult preparation, high cost, etc., to reduce reflection and absorption loss, simple device structure, and high work efficiency Effect

Active Publication Date: 2019-12-03
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

However, dielectric metamaterial phase control devices mostly use silicon nanoparticles, and their working wavelength is limited below 300THz; some devices using wide-bandgap dielectric materials such as titanium oxide can work in the visible light band, but their structural aspect ratio is too large , the preparation is extremely difficult, the cost is extremely high, and it is difficult to popularize
The Huygens metasurface phase modulation device based on metal materials is composed of multi-layer metal nanostructures, and its efficiency has been greatly improved compared with the phase modulation devices of the early single-layer ultra-thin metal nanostructures, but the current highest efficiency is still 40%. Below, and the preparation process of multilayer metal nanostructure is complex and costly

Method used

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  • A space beam phase control device
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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are well known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints.

[0033] The invention provides a space light beam phase control device. like figure 1 as shown, figure 1 It is a sectional view of a space beam phase control ...

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Abstract

The invention provides a spatial beam phase regulation device. The spatial beam phase regulation device is characterized in that a Fabry Perot resonant cavity is utilized to realize phase regulation of any degree between 0 to 360 DEG for the incident light; a dielectric substrate and a dielectric coating layer are utilized to provide protection and impedance match for a phase regulation layer; and different resonant cavity width in a periodicity array is used to generate different phase time-delay for the transmitted light to realize spatial beam phase regulation. The spatial beam phase regulation device utilizes Fabry Perot resonance in the thick metal meta-material particle periodicity array to realize phase regulation of the spatial beam, and has the advantages of large phase regulation range, high work efficiency, wide suitable wave band and simple device structure which is easy to prepare.

Description

technical field [0001] The invention relates to a control device, in particular to a space light beam phase control device. Background technique [0002] Metamaterial phase control technology has a wide range of applications in super-resolution imaging, subwavelength focusing, planar prisms, beam pointing, anomalous reflection and refraction, optical vortex generation, and optical polarization state control. Most of the early metal metamaterial phase control devices are composed of single-layer ultrathin metal nanostructures. The transmitted light phase can be effectively adjusted by changing the shape, size and arrangement of nanostructure units. However, this type of metamaterial phase control device based on a single-layer ultra-thin metal nanostructure cannot effectively suppress the reflection and absorption of the metal structure, so its efficiency is very low. [0003] The Huygens metasurfaces emerging in recent years have greatly improved the efficiency of metamate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/00G02B26/06
CPCG02B1/002G02B26/06
Inventor 韦欣胡晓斌宋国峰李健
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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