CN203216607U - Device using high-temperature superconductive YBCO bicrystal junction for detecting terahertz radiation of high-temperature superconductive BSCCO - Google Patents
Device using high-temperature superconductive YBCO bicrystal junction for detecting terahertz radiation of high-temperature superconductive BSCCO Download PDFInfo
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- CN203216607U CN203216607U CN201320097445.7U CN201320097445U CN203216607U CN 203216607 U CN203216607 U CN 203216607U CN 201320097445 U CN201320097445 U CN 201320097445U CN 203216607 U CN203216607 U CN 203216607U
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- ybco
- bscco
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- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 title claims abstract description 41
- 230000005855 radiation Effects 0.000 title abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 38
- 239000010703 silicon Substances 0.000 claims abstract description 38
- 239000013078 crystal Substances 0.000 claims description 31
- 239000002887 superconductor Substances 0.000 claims description 14
- 239000007767 bonding agent Substances 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 238000009713 electroplating Methods 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 2
- 229910004247 CaCu Inorganic materials 0.000 description 1
- 230000005668 Josephson effect Effects 0.000 description 1
- 241001124569 Lycaenidae Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000014987 copper Nutrition 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model discloses a device using a high-temperature superconductive YBCO bicrystal junction for detecting terahertz radiation of a high-temperature superconductive BSCCO. The device comprises a first body and a second body which are interconnected, via holes are arranged at corresponding positions of the first body and the second body respectively, a first super-hemispherical silicon lens and a second super-hemispherical silicon lens are arranged in the via holes, a BSCCO to-be-detected is arranged on one outer side of the first super-hemispherical silicon lens, that a BSCCO junction is aligned with the central position of the first super-hemispherical silicon lens is guaranteed, a YBCO to-be-detected is arranged on the outer side of the second super-hemispherical silicon lens, and that a YBCO junction aligned with the central position of the second super-hemispherical silicon lens is guaranteed. The device which is simple in structure and ingenious in design is capable of reducing radiation loss to the utmost extent. Through the device of the utility model, the high-temperature superconductive YBCO bicrystal junction can be used for successfully detecting terahertz radiation from the BSCCO. A foundation is laid for future development of a high-temperature superconductive YBCO terahertz detector integrated with local oscillators.
Description
Technical field
The utility model relates to HTS YBCO twin crystal knot terahertz detector and high-temperature superconductor BSCCO Terahertz source correlation technique, is specifically related to a kind of device that uses HTS YBCO twin crystal knot to survey high-temperature superconductor BSCCO terahertz emission.
Background technology
YBa
2Cu
3O
7(YBCO) twin crystal knot is to utilize epitaxial growth high-temperature superconducting thin film (YBCO material) on the twin crystal substrate, utilizes artificial crystal boundary and the weak johning knot that constitutes.It is a kind of Josephson knot, and its IV curve satisfies the Josephson effect, can be used for as the detector of surveying THz wave.Compare with other high-temperature superconducting thin film knot, the commercialization of twin crystal substrate, the growth technique of ybco film is also very ripe, and preparation technology is fairly simple for the twin crystal knot, junction characteristic high conformity, yield rate height, good reproducibility, knot Terahertz frequency response height is widely used.
Bi
2Sr
2CaCu
2O
8(BSCCO) also be a kind of high temperature superconducting materia, utilize the intrinsic Josephson knot (IJJ) of its preparation can the radiation THz wave, this technology has obtained development very in recent years, at present its at the reckoning power in 4 π spaces greater than 30 μ W, frequency is up to and reaches 2.5THz, and this technology can be used in some field at present.
HTS YBCO twin crystal knot is as terahertz detector, has that noise is low, response is fast, highly sensitive, precision is high, response frequency is high, the working temperature advantages of higher.High-temperature superconductor BSCCO intrinsic Josephson knot is as the Terahertz source, and its radiation has that the frequency adjustable scope is big, ray purity height, characteristics such as stable.If so can perhaps can use BSCCO as local oscillator both combinations, and use YBCO as frequency mixer, have finally prepared the high-temperature superconductor terahertz detector of local oscillator integrated.As the first step of this integrated detector, at first need to use YBCO successfully to detect BSCCO and give off THz wave, and the present relevant report of this direction not still in the world.
The utility model content
Goal of the invention: at technological gap, the purpose of this utility model provides a kind of device that uses HTS YBCO twin crystal knot to survey high-temperature superconductor BSCCO terahertz emission, in the hope of realizing using the detection of high-temperature superconductor BSCCO terahertz emission of becoming a partner of HTS YBCO twin crystal.
Technical scheme: in order to realize the foregoing invention purpose, the technical solution adopted in the utility model is:
A kind of device that uses HTS YBCO twin crystal knot to survey high-temperature superconductor BSCCO terahertz emission is characterized in that: comprise interconnective main body one and main body two, establish perforation at the correspondence position of described main body one and main body two respectively; In described perforation, establish super hemisphere silicon lens one and super hemisphere silicon lens two; BSCCO to be measured is located at super hemisphere silicon lens one outside, and guarantees the become a partner center of accurate super hemisphere silicon lens one of BSCCO; YBCO to be measured is located at super hemisphere silicon lens two outsides, and guarantees the become a partner center of accurate super hemisphere silicon lens two of YBCO.
Described super hemisphere silicon lens one and super hemisphere silicon lens two all are fixed in the perforation by the low temperature heat-conductive bonding agent.
Described main body one and main body two are made by red copper processing, electroplating gold on surface.
Described super hemisphere silicon lens one is relative with super hemisphere silicon lens two common axis and sphere.
Device of the present utility model will be integrated on this device as the YBCO twin crystal of receiver knot with as the BSCCO of emissive source, only need a refrigeration machine just finish test, the simplification test process.Use the relative mode of hyper-hemispherical lens sphere of two symmetries, make transmitting terminal and receiving end all precisely focus on, thus the radiation power of enhanced rad to the receiver greatly.Utilize this method of testing in the experiment, under the 25K temperature, use YBCO twin crystal knot to survey the terahertz emission of BSCCO, 7 Xia Piluo steps appear at most on the IV curve of YBCO, lay a good foundation for the application such as superconduction Terahertz receiver that realize integrated local oscillator from now on, as seen this utility model has the good application development prospect.
Beneficial effect: device of the present utility model, simple in structure, design ingenious, the terahertz emission that radiates diffusion from transmitting terminal BSCCO becomes directional light through behind the super hemisphere silicon lens, directional light focuses on the YBCO by another identical super hemisphere silicon lens again, the radiation of transmitting terminal and receiving end all focuses on like this, and two lens distance very near (about 2mm), reduces the loss of radiation to the full extent.Use device of the present utility model, can successfully use the HTS YBCO twin crystal to tie the terahertz emission that has detected from BSCCO.For the HTS YBCO terahertz detector of developing local oscillator from now on integrated lays the first stone.
Description of drawings
Fig. 1 is to use HTS YBCO twin crystal knot to survey the structural representation of the device of high-temperature superconductor BSCCO terahertz emission;
Fig. 2 is the side view of Fig. 1;
Fig. 3 carries the structural representation of BSCCO main body one;
Fig. 4 is the structural representation of carrying YBCO main body two;
Fig. 5 is to use the measurement effect synoptic diagram of device of the present utility model;
The IV curve map of the YBCO that Fig. 6 is to use device of the present utility model to experimentize to measure;
Fig. 7 is the structural representation of super hemisphere silicon lens.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Shown in Fig. 1,2,3 and 4, use HTS YBCO twin crystal knot to survey the device of high-temperature superconductor BSCCO terahertz emission, comprise interconnective main body 1 and main body 22, punch the hole at the correspondence position of main body 1 and main body 22 respectively, will surpass hemisphere silicon lens 1 and super hemisphere silicon lens 24 correspondences are fixed on main body 1 and the main body 22 by the low temperature heat-conductive bonding agent.BSCCO5 to be measured is located at super hemisphere silicon lens one 3 outsides, and YBCO6 to be measured is located at super hemisphere silicon lens 24 outsides, and the center of the accurate lens of guaranteeing to become a partner.
In addition, can reserve some screws in main body 1 and main body 22, be used for installing elements such as applying copper circuit board, sub-miniature A connector.
Use in the experiment and be grown in that the thick YBCO superconducting thin film of 100nm substrate preparation goes out YBCO/MgO twin crystal knot (size: 10mm * 10mm * 0.5mm, twin crystal crystal boundary angle 24o) on the MgO twin crystal substrate.The wide 1.5 μ m of the twin crystal scaffolding of finally preparing, integrated planar-periodic logarithm antenna.
The BSCCO intrinsic Josephson knot that experiment is used is by two-sided knot preparation technology preparation.It is long to be of a size of 320 μ m, and 60 μ m are wide, and 1.2 μ m are thick.This sample uses other method to test in advance, can know that this BSCCO maximum can give off the radiation of about 25 μ W, and frequency is adjustable at 0.48THz ~ 0.52THz.
As shown in Figure 5, above-mentioned YBCO/MgO twin crystal knot is adhesive on the super hemisphere silicon lens by low temperature, aims at by the embodiment microscope of band collimation, make the middle junction zone position aim at the lens center.BSCCO intrinsic Josephson knot on another super hemisphere silicon lens, is aimed at the center of the feasible accurate lens of becoming a partner by embodying microscope by the low temperature glue equally.
Then whole device is installed in the GM refrigeration machine, is cooled to 25K, finally record the result as shown in Figure 6.Curve 7 is illustrated in the IV curve of YBCO/MgO twin crystal knot when not having terahertz emission among the figure, and curve 8 is illustrated in the IV curve of YBCO/MgO twin crystal knot under the BSCCO terahertz emission.Can very clearly see on the twin crystal knot IV curve and produce a lot of Xia Piluo steps.Can see step at most the 7th time from the dV/dI curve.This shows, utilize device of the present utility model, can successfully use YBCO/MgO twin crystal knot to detect the THz wave that BSCCO gives off.
Claims (4)
1. one kind is used the HTS YBCO twin crystal to tie the device of surveying high-temperature superconductor BSCCO terahertz emission, it is characterized in that: comprise interconnective main body one (1) and main body two (2), establish perforation at the correspondence position of described main body one (1) and main body two (2) respectively; In described perforation, establish super hemisphere silicon lens one (3) and super hemisphere silicon lens two (4); BSCCO(5 to be measured) be located at super hemisphere silicon lens one (3) outside, and guarantee BSCCO(5) center of the accurate super hemisphere silicon lens one (3) of becoming a partner; YBCO(6 to be measured) be located at super hemisphere silicon lens two (4) outsides, and guarantee YBCO(6) center of the accurate super hemisphere silicon lens two (4) of becoming a partner.
2. use HTS YBCO twin crystal knot according to claim 1 is surveyed the device of high-temperature superconductor BSCCO terahertz emission, and it is characterized in that: described super hemisphere silicon lens one (3) and super hemisphere silicon lens two (4) all are fixed in the perforation by the low temperature heat-conductive bonding agent.
3. use HTS YBCO twin crystal knot according to claim 1 is surveyed the device of high-temperature superconductor BSCCO terahertz emission, it is characterized in that: described main body one (1) and main body two (2) are made by red copper processing, electroplating gold on surface.
4. use HTS YBCO twin crystal knot according to claim 1 is surveyed the device of high-temperature superconductor BSCCO terahertz emission, it is characterized in that: described super hemisphere silicon lens one (3) is relative with super hemisphere silicon lens two (4) common axis and sphere.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320097445.7U CN203216607U (en) | 2013-03-04 | 2013-03-04 | Device using high-temperature superconductive YBCO bicrystal junction for detecting terahertz radiation of high-temperature superconductive BSCCO |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320097445.7U CN203216607U (en) | 2013-03-04 | 2013-03-04 | Device using high-temperature superconductive YBCO bicrystal junction for detecting terahertz radiation of high-temperature superconductive BSCCO |
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| CN203216607U true CN203216607U (en) | 2013-09-25 |
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| CN201320097445.7U Expired - Fee Related CN203216607U (en) | 2013-03-04 | 2013-03-04 | Device using high-temperature superconductive YBCO bicrystal junction for detecting terahertz radiation of high-temperature superconductive BSCCO |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175609A (en) * | 2013-03-04 | 2013-06-26 | 南京大学 | Device using high-temperature superconducting YBCO (yttrium barium copper oxide) bicrystal junction for detecting terahertz radiation of high-temperature superconducting BSCCO (bismuth strontium calcium copper oxide) |
| CN103884422A (en) * | 2014-03-26 | 2014-06-25 | 中国科学院紫金山天文台 | Quasi-optics type probe for terahertz near-field measurement, detection system and detection method |
-
2013
- 2013-03-04 CN CN201320097445.7U patent/CN203216607U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175609A (en) * | 2013-03-04 | 2013-06-26 | 南京大学 | Device using high-temperature superconducting YBCO (yttrium barium copper oxide) bicrystal junction for detecting terahertz radiation of high-temperature superconducting BSCCO (bismuth strontium calcium copper oxide) |
| CN103884422A (en) * | 2014-03-26 | 2014-06-25 | 中国科学院紫金山天文台 | Quasi-optics type probe for terahertz near-field measurement, detection system and detection method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20140304 |