CN103956637A - High-frequency BSCCO-THz source - Google Patents
High-frequency BSCCO-THz source Download PDFInfo
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- CN103956637A CN103956637A CN201410202463.6A CN201410202463A CN103956637A CN 103956637 A CN103956637 A CN 103956637A CN 201410202463 A CN201410202463 A CN 201410202463A CN 103956637 A CN103956637 A CN 103956637A
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- bscco
- thz source
- frequency
- thz
- gold
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- 239000000758 substrate Substances 0.000 claims abstract description 26
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 35
- 229910052737 gold Inorganic materials 0.000 claims description 34
- 239000010931 gold Substances 0.000 claims description 34
- 239000003292 glue Substances 0.000 claims description 24
- 241000218202 Coptis Species 0.000 claims description 15
- 235000002991 Coptis groenlandica Nutrition 0.000 claims description 15
- 229920001721 polyimide Polymers 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 17
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 3
- 230000001070 adhesive effect Effects 0.000 abstract 3
- 239000004593 Epoxy Substances 0.000 description 2
- 230000005668 Josephson effect Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000002887 superconductor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Waveguide Connection Structure (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a high-frequency BSCCO-THz source which comprises a BSCCO-THz source body. An upper substrate is arranged on the BSCCO-THz source body. The upper substrate is bonded to a lower substrate of the BSCCO-THz source body through thermal conductive adhesives, and a BSCCO of the BSCCO-THz source body is wrapped by the thermal conductive adhesives. According to the high-frequency BSCCO-THz source, the BSCCO-THz source is wrapped by the thermal conductive adhesives, the upper substrate and the lower substrate, heat conduction of the BSCCO-THz source is really and effectively improved, therefore, bias voltage of the BSCCO-THz source is greatly increased, the terahertz signal radiation frequency of the BSCCO-THz source is increased, and terahertz radiation above 1THz can be obtained; the technological bottleneck at present is broken through effectively, the technology blank of the part is filled up, and the high-frequency BSCCO-THz source has wide application prospects, can be widely used in the field of BSCCO-THz sources, and has incomparable practicability.
Description
Technical field
The invention belongs to the solid-state THz source technical field of high-temperature superconductor BSCCO, be specifically related to a kind of high-frequency BSCCO-THz source.
Background technology
Terahertz (terahertz, conventionally be called for short THz) ripple, refer to the electromagnetic wave of frequency between 0.1THz to 30THz, than other frequency range electromagnetic waves, THz wave has much distinctive character, and it is had broad application prospects in fields such as astronomy, biology, communications.Owing to lacking the method that effectively produces and survey THz wave, make the development of THz wave very slow in early days.BSCCO-THz(Bi
2sr
2caCu
2o
8) source is the solid-state THz source of a kind of high-temperature superconductor based on Josephson effect, it have easy-to-use, continuous, tunable, monochromaticjty is good, power advantages of higher.Yet clear due to the physical mechanism in BSCCO-THz source is studied not yet completely, its radiation frequency mainly concentrates on 500 GHz left and right, and this is a difficult point that perplexs for many years this research field.
Typical BSCCO-THz source is gold-BSCCO-gold structure BSCCO-THz source, as shown in Figure 1, its main structural components is comprised of subtegulum 1, gold thread 2, elargol 3, bottom gold 4, BSCCO5, top layer gold 6, upper and lower surface at BSCCO5 is respectively equipped with bottom gold 4 and top layer gold 6, on bottom gold 4 and top layer gold 6, be equipped with gold thread 2, gold thread 2 is fixed on bottom gold 4 and top layer gold 6 by elargol; Bottom gold 4 is arranged on subtegulum 1.The BSCCO-THz source of this structure, only dispels the heat by BSCCO5 itself, so its heat dispersion is poor, directly affects its radiation frequency and mainly concentrates on 500 GHz left and right.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of high-frequency BSCCO-THz source, overcome current BSCCO-THz source radiation frequency generally in the technical bottleneck of 500GHz, more than its radiation frequency is risen to 1THz.
Technical scheme: for achieving the above object, the present invention adopts following technical scheme:
A high-frequency BSCCO-THz source, comprises BSCCO-THz source; On described BSCCO-THz source, be provided with substrate; Described upper substrate sticks on by heat-conducting glue on the subtegulum in BSCCO-THz source, and the BSCCO in described BSCCO-THz source is wrapped in heat-conducting glue inside.
Described BSCCO-THz source comprises subtegulum, bottom gold, BSCCO and the top layer gold upwards arranging successively from bottom; On described top layer gold, be provided with substrate; Described upper substrate sticks on subtegulum by heat-conducting glue, and described BSCCO is wrapped in heat-conducting glue inside.
On described bottom gold, by elargol, establish gold thread, described bottom gold, silver glue and part gold thread are all located in heat-conducting glue.
On described top layer gold, by elargol, establish gold thread, described part top layer gold, silver glue and part gold thread are all located in heat-conducting glue.
Described heat-conducting glue is polyimides (polyimide) or epoxy resin (epoxy).
Described upper substrate is magnesium oxide (MgO) substrate.
Beneficial effect: compared with prior art, high-frequency BSCCO-THz of the present invention source, its BSCCO-THz source is wrapped in by the substrate of heat-conducting glue and upper and lower, really effectively improve the heat conduction in BSCCO-THz source, thereby greatly increase its bias voltage, improve the frequency of its radiation terahertz signal, can obtain the above terahertz emission of 1THz; Effectively break through current technical bottleneck, fill up the technological gap of this part, have broad application prospects, at BSCCO-THz source domain, will be widely used, there is incomparable practicality.
Accompanying drawing explanation
Fig. 1 is the BSCCO-THz source structure schematic diagram of existing gold-BSCCO-gold structure;
Fig. 2 is the structural representation in high-frequency BSCCO-THz source;
Fig. 3 is current-voltage curve and voltage-terahertz signal frequency curve chart in existing structure and high-frequency BSCCO-THz source;
Fig. 4 is existing structure and the high-frequency BSCCO-THz source radiation terahertz signal frequency diagram under different temperatures.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
High-frequency BSCCO-THz of the present invention source, for sandwich structure form, can be applied to easily the BSCCO-THz source of different structure, at top, BSCCO-THz source, substrate is set, then upper substrate is pasted on the subtegulum in BSCCO-THz source with heat-conducting glue, and BSCCO is wrapped in to heat-conducting glue inside, the sandwich structure form of substrate-BSCCO-THz source-subtegulum in formation, the BSCCO-THz source radiation frequency that just current radiation frequency can be concentrated on to 500 GHz left and right improves, this Novel structure has been broken through current technical bottleneck, filled up the technological gap of this part, have broad application prospects, at BSCCO-THz source domain, will be widely used, there is incomparable practicality.Below only take the BSCCO-THz source of existing typical gold-BSCCO-gold structure describes as example, and other principles are identical.
As shown in Figure 2, high-frequency BSCCO-THz source, primary structure comprises subtegulum 1, gold thread 2, elargol 3, bottom gold 4, BSCCO5, top layer gold 6, heat-conducting glue 7 and upper substrate 8, upper and lower surface at BSCCO5 is respectively equipped with bottom gold 4 and top layer gold 6, on bottom gold 4 and top layer gold 6, be equipped with gold thread 2, gold thread 2 is separately fixed on bottom gold 4 and top layer gold 6 by elargol; Bottom gold 4 is arranged on subtegulum 1; Upper substrate 8 is located at the top of top layer gold 6, by heat-conducting glue 7, sticks on subtegulum 1, and BSCCO5 is wrapped in heat-conducting glue 7 completely, and gold thread 2, top layer gold 6 are partly wrapped up, " sandwich " structure of substrate 8-BSCCO5-subtegulum 1 in formation.Heat-conducting glue 7 can be commercially available polyimides (polyimide) or epoxy resin (epoxy), and upper substrate 8 is MgO substrates.
This high-frequency BSCCO-THz source is in work, the glue 7 by its surrounding such as the self-heating that BSCCO5 region produces because of current flowing, upper substrate 8, subtegulum 1 etc. are to outdiffusion, can only pass through the outside diffusion phase ratio of subtegulum 1 with script, its thermal diffusion efficiency improves greatly, thereby reduced the working temperature of BSCCO5 reality, its bias voltage is raise, to extraradial Terahertz frequency, also raise.This is because according to Josephson effect, the bias voltage of the single knot of raising BSCCO, will likely improve BSCCO-THz source radiation frequency.And according to current research, the heat conduction that improves sample will contribute to promote the bias voltage of BSCCO knot.
As shown in Figure 3, in the part of top (a), curve 9 represents original structure current-voltage, and curve 10 represents high-frequency BSCCO-THz source current-voltage; In the part of bottom (b), curve 11 represents original structure voltage-terahertz signal frequency, and curve 12 represents high-frequency BSCCO-THz source voltage-terahertz signal frequency; As can be seen from Figure 3, applied its integral biased voltage of high-frequency BSCCO-THz source and obviously increased, the bias voltage of corresponding radiation Terahertz point also obviously increases.
As shown in Figure 4, curve 13 is representative structure BSCCO-THz source radiation Terahertz frequency, curve 14,15 represents high-frequency BSCCO-THz source radiation Terahertz frequency, obviously finds out that high-frequency BSCCO-THz source radiation Terahertz frequency 14,15 is higher than original structure BSCCO-THz source radiation Terahertz frequency 13.High-frequency BSCCO-THz source radiation Terahertz highest frequency 15 has surpassed 1THz.
Claims (6)
1. a high-frequency BSCCO-THz source, comprises BSCCO-THz source; It is characterized in that: on described BSCCO-THz source, be provided with substrate; Described upper substrate sticks on by heat-conducting glue on the subtegulum in BSCCO-THz source, and the BSCCO in described BSCCO-THz source is wrapped in heat-conducting glue inside.
2. high-frequency BSCCO-THz according to claim 1 source, is characterized in that: described BSCCO-THz source comprises subtegulum (1), bottom gold (4), the BSCCO(5 upwards arranging successively from bottom) and top layer gold (6); On described top layer gold (6), be provided with upper substrate (8); It is upper that described upper substrate (8) sticks on subtegulum (1) by heat-conducting glue (7), described BSCCO(5) be wrapped in heat-conducting glue (7) inside.
3. high-frequency BSCCO-THz according to claim 2 source, it is characterized in that: at described bottom gold (4), above by elargol (3), establish gold thread (2), described bottom gold (4), elargol (3) and part gold thread (2) are all located in heat-conducting glue (7).
4. high-frequency BSCCO-THz according to claim 2 source, is characterized in that: at described top layer gold (6), above by elargol, establish gold thread, described part top layer gold (6), elargol and part gold thread are all located in heat-conducting glue (7).
5. according to the high-frequency BSCCO-THz source described in claim 1,2,3 or 4, it is characterized in that: described heat-conducting glue (7) is polyimides or epoxy resin.
6. according to the high-frequency BSCCO-THz source described in claim 1,2,3 or 4, it is characterized in that: described upper substrate (8) is magnesium oxide substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410202463.6A CN103956637B (en) | 2014-05-14 | 2014-05-14 | High-frequency BSCCO-THz source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410202463.6A CN103956637B (en) | 2014-05-14 | 2014-05-14 | High-frequency BSCCO-THz source |
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| Publication Number | Publication Date |
|---|---|
| CN103956637A true CN103956637A (en) | 2014-07-30 |
| CN103956637B CN103956637B (en) | 2017-01-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505458A (en) * | 2014-11-27 | 2015-04-08 | 南京大学 | Portable continuous adjustable terahertz generator |
| CN105576115A (en) * | 2015-12-24 | 2016-05-11 | 南京大学 | Fabrication method of double-sided junction and high-temperature super-conduction Bi<2>Sr<2>CaCu<2>O<8+Delta> (BSCCO) terahertz source |
| CN109039353A (en) * | 2018-05-24 | 2018-12-18 | 南京大学 | A kind of superconduction heterodyne integrated receiver |
| CN110556689A (en) * | 2019-09-10 | 2019-12-10 | 北京航空航天大学 | Optical fiber access type liquid pool for terahertz radiation generation |
Citations (4)
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|---|---|---|---|---|
| JPH0982445A (en) * | 1995-09-08 | 1997-03-28 | Kobe Steel Ltd | Superconductive connecting method for oxide type superconductive wire |
| CN102340099A (en) * | 2011-01-18 | 2012-02-01 | 南京长青激光科技有限责任公司 | Structure and method for packaging blue-green laser chip based on thin crystal |
| CN103427015A (en) * | 2013-09-02 | 2013-12-04 | 南京大学 | Portable high-power continuously-adjustable terahertz generator |
| CN203932648U (en) * | 2014-05-14 | 2014-11-05 | 南京大学 | A kind of high-frequency BSCCO-THz source |
-
2014
- 2014-05-14 CN CN201410202463.6A patent/CN103956637B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0982445A (en) * | 1995-09-08 | 1997-03-28 | Kobe Steel Ltd | Superconductive connecting method for oxide type superconductive wire |
| CN102340099A (en) * | 2011-01-18 | 2012-02-01 | 南京长青激光科技有限责任公司 | Structure and method for packaging blue-green laser chip based on thin crystal |
| CN103427015A (en) * | 2013-09-02 | 2013-12-04 | 南京大学 | Portable high-power continuously-adjustable terahertz generator |
| CN203932648U (en) * | 2014-05-14 | 2014-11-05 | 南京大学 | A kind of high-frequency BSCCO-THz source |
Non-Patent Citations (2)
| Title |
|---|
| D.Y.AN ET AL.: "Terahertz emission and detection both based on high-Tc superconductors: Towards an integrated receiver", 《APPLIED PHYSICS LETTERS》, vol. 102, no. 9, 4 March 2013 (2013-03-04), XP 012170319, DOI: doi:10.1063/1.4794072 * |
| L. OZYUZER ET AL.: "Emission of coherent THz radiation from superconductors", 《SCIENCE》, vol. 318, no. 23, 23 November 2007 (2007-11-23), pages 1291 - 1293 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505458A (en) * | 2014-11-27 | 2015-04-08 | 南京大学 | Portable continuous adjustable terahertz generator |
| CN104505458B (en) * | 2014-11-27 | 2017-10-20 | 南京大学 | A kind of portable continuously adjustabe Terahertz generator |
| CN105576115A (en) * | 2015-12-24 | 2016-05-11 | 南京大学 | Fabrication method of double-sided junction and high-temperature super-conduction Bi<2>Sr<2>CaCu<2>O<8+Delta> (BSCCO) terahertz source |
| CN105576115B (en) * | 2015-12-24 | 2018-04-17 | 南京大学 | A kind of preparation method of two-sided knot high-temperature superconductor BSCCO THz sources |
| CN109039353A (en) * | 2018-05-24 | 2018-12-18 | 南京大学 | A kind of superconduction heterodyne integrated receiver |
| CN110556689A (en) * | 2019-09-10 | 2019-12-10 | 北京航空航天大学 | Optical fiber access type liquid pool for terahertz radiation generation |
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| CN103956637B (en) | 2017-01-25 |
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