Sub-wavelength thermal radiation waveguide device construction method and system based on near-field zero pole mode

Abstract

The present invention provides a sub-wavelength thermal radiation waveguide device construction method and system based on the near-field zero-pole mode, including: step S1: selecting alumina with a stable refractive index in the infrared and visible band as the base material of the thermal radiation waveguide device, And process an amorphous silicon coating with a set thickness on the substrate; step S2: construct the structural unit of the subwavelength thermal radiation waveguide device; step S3: perform micro-nano processing on the amorphous silicon coating to prepare a periodic Arranging the structural units to complete the processing of the sub-wavelength thermal radiation waveguide device; step S4: adjust the polarization direction of the incident energy and the periodic direction of the structural units in the waveguide device, so that the waveguide device has a set transmission efficiency. Step S5: Obtain a sub-wavelength thermal radiation waveguide device based on the near-field zero-pole mode. The invention solves the problems of difficult energy concentration, high transmission loss and complicated structure in the existing heat radiation waveguide device.

Description

technical field [0001] The present invention relates to the technical field of radiation waveguide devices, in particular to a construction method and system for a sub-wavelength thermal radiation waveguide device based on a near-field zero-pole mode. Background technique [0002] At present, the collection and utilization of thermal radiation energy is more serious than the way of macro-scale regulation, so it cannot be applied to miniaturized equipment to improve energy utilization efficiency. In order to realize the collection and utilization of thermal radiation energy at the micro-nano scale, it is necessary to overcome the diffraction limit of thermal radiation waves and concentrate the thermal radiation energy in subwavelength structures. Therefore, the research on subwavelength thermal radiation waveguides is of great significance. Existing sub-wavelength waveguide structures can generally be divided into two categories: one is the use of surface plasmons supported b...

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Problems solved by technology

However, this kind of waveguide is not only limited by the ohmic loss of the metal, but also the working band depends on the intrinsic properties of the noble metal and cannot be easily adjusted; the other is to use the photonic crystal structure to construct an artificial band gap, and localize the thermal radiation energy in the surface state , but the artificial bandgap in photonic crystal waveguides is heavily dependent on periodic conditions, and the structure is complex and difficult to process

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