CN202633478U - Narrow-band terahertz passive filter with metal-surface micronano structure - Google Patents
Narrow-band terahertz passive filter with metal-surface micronano structure Download PDFInfo
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- CN202633478U CN202633478U CN 201220245224 CN201220245224U CN202633478U CN 202633478 U CN202633478 U CN 202633478U CN 201220245224 CN201220245224 CN 201220245224 CN 201220245224 U CN201220245224 U CN 201220245224U CN 202633478 U CN202633478 U CN 202633478U
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- holes
- terahertz
- passive filter
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Abstract
The utility model discloses a narrow-band terahertz passive filter with a metal-surface micronano structure. The narrow-band terahertz passive filter comprises a metal plate, wherein holes are punched on the metal plate; the diameters of the holes are equal, and the holes are arranged at equal interval; the holes between the lines are arranged in a staggered manner; and the periodical holes which are arranged in a triangle manner are in an array structure. The narrow-band terahertz passive filter disclosed by the utility model has the advantages that the structure is simple, the processing is convenient, and the cost is low; the wave filtering performance is excellent; the bandwidth (full width at half maximum) filtered terahertz electromagnetic wave can reach 0.08THz, and the transmittance can be up to 95%; and the central wavelength of the filtered terahertz electromagnetic wave can be changed randomly along with the difference of the sizes and the intervals of the holes.
Description
Technical field
The utility model relates to a kind of metal surface micro-nano structure narrow band terahertz band passive filter.Be applied to military affairs, communication, space flight and aviation, safety inspection, technical fields such as medical test.
Background technology
Why Terahertz Technology has special attraction, and be because the following characteristics of terahertz emission: the characteristic spectral line of about 50% cosmic space photon energy, a large amount of interstellar molecules is in the Terahertz scope; A large amount of organic molecule rotations and vibrational transition, semi-conductive subband and little band energy are in the Terahertz scope; Terahertz emission can penetrate nonmetal and non-polar material, penetrates smog and floating dust; Terahertz photon energy is little, can not cause the photoionization of biological tissue.Just be based on above characteristics, Terahertz Technology becomes the research of the focus of present research, particularly terahertz filter.
Mainly contain both at home and abroad at present about terahertz filter: the quantum well terahertz filter; The photonic crystal terahertz filter; These several types of nematic liquid crystal material terahertz filters, but all exist certain defective, as: the terahertz filter cost based on quantum well of University of California's development is high; The photon crystal filter structure of developments such as France H.N ě mec. is damaged easily; China Taiwan research personnel Chao-yuan Chen etc. has proposed to be difficult to regulation and control based on the upright filter difficult to understand of the room temperature Terahertz of nematic liquid crystal material.
The utility model content
The utility model discloses a kind of metal surface micro-nano structure narrow band terahertz band passive filter, its purpose is to overcome that existing terahertz filter cost is high, the photon crystal filter structure is damaged easily, the upright filter difficult to understand of the room temperature Terahertz of nematic liquid crystal material is difficult to shortcomings such as regulation and control.The utility model is not only simple in structure, processes easy, and with low cost; Filtering performance is excellent.
The utility model technical scheme is achieved in that
A kind of metal surface micro-nano structure narrow band terahertz band passive filter comprises a metallic plate, it is characterized in that: on described metallic plate, punch; Described bore dia equates; Identical at interval, the hole dislocation is arranged between row and the row, is the periodic array of holes structure that triangular form is arranged.
Described metallic plate is aluminium sheet or copper coin.
The utlity model has with low costly, simple in structure, volume is little, and is simple for production, and filtering performance is excellent, and the bandwidth of the terahertz electromagnetic wave that is leached (overall with half is high) can reach 0.08THz, and transmitance can be up to 95%; The centre wavelength of the terahertz electromagnetic wave that is leached can any change along with the different of the diameter b in interval a and the hole in the periodic hole of design.
Description of drawings
Fig. 1 is the utility model metal surface micro-nano structure narrow band terahertz band passive filter;
Fig. 2 is reference signal and the terahertz time-domain figure that sees through metal surface micro-nano structure narrow band terahertz band passive filter;
Fig. 3 is the filtered spectrum of this filter theory calculating and actual measurement.
A is the interval in hole, and b is the diameter in hole, and c is a plate thickness.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.
A kind of metal surface micro-nano structure narrow band terahertz band passive filter, as shown in Figure 1, comprise a metallic plate, on described metallic plate, punch, described bore dia equates, b=0.6mm, the identical a=1.13mm in interval, plate thickness c=0.25mm., the hole dislocation is arranged between row and the row, is the periodic array of holes structure that triangular form is arranged.The incident direction of THz wave is as shown in Figure 1,
Fig. 2 is reference signal and sees through this metal surface micro-nano structure narrow band terahertz band passive filter time domain THz wave later on that as can be seen from the figure, see through the later THz wave of filter, the signal of many frequencies is all by this filter filtering.
Fig. 3 is the filtered spectrum of this filter theory calculating and actual measurement, and it is fine that the spectrum signal that actual measurement obtains and the signal of Theoretical Calculation coincide, and its centre frequency is 0.25THz, and bandwidth (overall with half is high) can reach 0.08THz, and transmitance can be up to 95%.
Above-described embodiment only is used to explain technological thought of the present invention and characteristics; Its purpose is to make those skilled in the art can understand content of the present invention and implements according to this; Can not only limit claim of the present invention with present embodiment; Be all equal variation or modifications of doing according to disclosed spirit, still drop in the claim of the present invention.
Claims (2)
1. a metal surface micro-nano structure narrow band terahertz band passive filter comprises a metallic plate, it is characterized in that: on described metallic plate, punch; Described bore dia equates; Identical at interval, the hole dislocation is arranged between row and the row, is the periodic array of holes structure that triangular form is arranged.
2. metal surface according to claim 1 micro-nano structure narrow band terahertz band passive filter, it is characterized in that: described metallic plate is aluminium sheet or copper coin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220245224 CN202633478U (en) | 2012-05-28 | 2012-05-28 | Narrow-band terahertz passive filter with metal-surface micronano structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220245224 CN202633478U (en) | 2012-05-28 | 2012-05-28 | Narrow-band terahertz passive filter with metal-surface micronano structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202633478U true CN202633478U (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220245224 Expired - Fee Related CN202633478U (en) | 2012-05-28 | 2012-05-28 | Narrow-band terahertz passive filter with metal-surface micronano structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN202633478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461829A (en) * | 2014-06-09 | 2017-02-22 | 索尼公司 | Optical filter, solid-state imaging apparatus, and electronic device |
-
2012
- 2012-05-28 CN CN 201220245224 patent/CN202633478U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461829A (en) * | 2014-06-09 | 2017-02-22 | 索尼公司 | Optical filter, solid-state imaging apparatus, and electronic device |
| CN106461829B (en) * | 2014-06-09 | 2019-10-29 | 索尼半导体解决方案公司 | Optical filter, solid state image pickup device and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130528 |