CN107910733A - The device of High-Field Terahertz short pulse is produced based on more paper tinsel emitter cones - Google Patents
The device of High-Field Terahertz short pulse is produced based on more paper tinsel emitter cones Download PDFInfo
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- CN107910733A CN107910733A CN201711190212.0A CN201711190212A CN107910733A CN 107910733 A CN107910733 A CN 107910733A CN 201711190212 A CN201711190212 A CN 201711190212A CN 107910733 A CN107910733 A CN 107910733A
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- electron beam
- terahertz
- pole piece
- pulse
- circular
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S1/00—Masers, i.e. devices using stimulated emission of electromagnetic radiation in the microwave range
- H01S1/02—Masers, i.e. devices using stimulated emission of electromagnetic radiation in the microwave range solid
Abstract
The present invention relates to a kind of device that High-Field Terahertz short pulse is produced based on more paper tinsel emitter cones, is incided using electron beam and transition radiation and then radiation terahertz pulse are produced on the metal foil between two electrode slices.The movement velocity of electron beam is lifted by applying high pressure generation electric field to electrode slice, so as to fulfill the function of ultrashort terahertz pulse intensity is increased.Device only needs simple optical element, and with regard to that can be built, device is simple, significant effect, and the ultrashort pulse peak power of generation is up to gigabit level.During practical operation, it is only necessary to control electric field strength to realize flexible modulation, operation is easy.
Description
Technical field
It is more particularly to a kind of to produce High-Field Terahertz based on more paper tinsel emitter cones the present invention relates to a kind of Terahertz Technology
The device of short pulse.
Background technology
THz wave refers to electromagnetic wave of the frequency in 0.1-10THz (wavelength arrives 3mm scopes 0.03).With the eighties one
The development of serial new technologies and materials, particularly ultrafast technology development so that obtain broadband stablize, pulse THz source into
For a kind of quasi- routine techniques, Terahertz Technology is developed rapidly, and interior at the international level starts one Terahertz research boom.
At present, the main application study of THz wave has terahertz time-domain spectroscopic technology, THz imaging technology, safety inspection, terahertz
Hereby radar, astronomy, the communication technology.Based on current Terahertz Technology, we have invented one kind can produce ultrashort Terahertz
The device of pulse.Ultrashort terahertz pulse." ultrashort " refer to perdurabgility in femtosecond to picosecond scope, therefore in stage pulse
Energy is huge, and prospect is more wide.
But the technical method that ultrashort terahertz pulse produces at present can only produce the THz wave of certain energy intensity mostly.
The present invention produces the Terahertz ultrashort pulse of gigabit level peak power using a kind of new radiation appliance.
The content of the invention
Ultrashort terahertz pulse peak energy the present invention be directed to produce at present only has the problem of some strength, proposes
A kind of device that High-Field Terahertz short pulse is produced based on more paper tinsel emitter cones, using electron beam incides two electrode slices
Between metal foil on produce transition radiation so that radiate terahertz pulse.By to electrode slice apply high pressure produce electric field come
The movement velocity of electron beam is lifted, so as to fulfill the function of ultrashort terahertz pulse intensity is increased.
The technical scheme is that：A kind of device that High-Field Terahertz short pulse is produced based on more paper tinsel emitter cones,
Including electron beam generator, annular electro pole piece, DC high-voltage power supply, circular conductive paillon foil group, circular electric pole piece, condenser lens and
Thermal detector；
From the short electron beam of electron beam generator output along straightline propagation, initially pass through annular electro pole piece and enter high voltage electric field,
Then it is irradiated on the truncated cone for coaxially being shelved by multi-disc circular conductive paillon foil gap and stacking and forming, electron beam is beaten in circular electrode
On piece, the THz wave that electron beam gives off on each metal foil are superimposed to form tapered ultrashort terahertz pulse, it is ultrashort too
Hertz pulse is focused lens focus to thermal detector around circular electric pole piece, and annular electro pole piece and circular electric pole piece are external straight
High voltage power supply is flowed, high voltage electric field is formed between electrode slice, accelerates the pace of electron beam.
The truncated cone is formed by equal coaxial shelve in the multi-disc circular metal paillon foil gap successively decreased successively, adjacent metal piece
Between medium be non-conducting gas medium.
The beneficial effects of the present invention are：The present invention produces the dress of High-Field Terahertz short pulse based on more paper tinsel emitter cones
Put, it is only necessary to which simple optical element is with regard to that can be built, and device is simple, significant effect, the ultrashort pulse peak power of generation
Up to gigabit level.During practical operation, it is only necessary to control electric field strength to realize flexible modulation, operation is held
Easily.
Brief description of the drawings
Fig. 1 produces High-Field Terahertz short pulse apparatus structure schematic diagram for the present invention based on more paper tinsel emitter cones；
Fig. 2 is metal foil schematic device of the present invention；
Fig. 3 is obtained ultrashort terahertz pulse intensity effect figure when high voltage power supply of the present invention is 2kv；
Fig. 4 is obtained ultrashort terahertz pulse intensity effect figure when high voltage power supply of the present invention is 4kv；
Fig. 5 is obtained ultrashort terahertz pulse intensity effect figure when high voltage power supply of the present invention is 6kv.
Embodiment
As shown in Figure 1 High-Field Terahertz short pulse apparatus structure schematic diagram, including electricity are produced based on more paper tinsel emitter cones
Sub-beam generator 1, annular electro pole piece 2, DC high-voltage power supply 3, circular conductive paillon foil group 4, circular electric pole piece 5, condenser lens 6,
Thermal detector 7.
The short electron beam exported from electron beam generator 1 initially passes through annular electro pole piece 2 and enters high-voltage electricity along straightline propagation
, then it is irradiated to the multi-disc circular conductive paillon foil gap successively decreased successively by radius and coaxially shelves on the truncated cone 4 for stacking and forming,
This process is beaten on circular electric pole piece 5 according to-Cerenkov radiation principle, electron beam is getted over, and electron beam is in each metal foil
On give off THz wave, and give off THz wave superposition form tapered terahertz emission, i.e., ultrashort terahertz pulse.
Ultrashort terahertz pulse is focused lens 6 around circular electric pole piece 5 and focuses on thermal detector 7.Annular electro pole piece 2 and circular electric
The external DC high-voltage power supply 3 of pole piece 5, forms the pace that high voltage electric field accelerates electron beam between electrode slice, so as to fulfill
Strengthen the function of ultrashort terahertz pulse intensity.
In the following examples, with energy 70Gev, speed utilizes metal foil high-purity for the electron beam of 0.9 times of light velocity
Give off THz wave under argon gas normal temperature condition, exemplified by detecting THz wave using thermal detector, other electron beams and its
His high-purity gas is consistent with the implementation.
Electron beam generator exports beam energy 70Gev, and speed is 0.9 times of light velocity, specifically produces ultrashort Terahertz arteries and veins
The process of punching is as follows：From the short electron beam that electron beam generator 1 exports along straightline propagation, initially pass through annular electro pole piece 2 and then shine
It is mapped on the truncated cone 4, enters afterwards in circular electric pole piece 5.This process is according to getting over-Cerenkov radiation principle, electron beam
Terahertz pulse is given off on each metal foil, final superposition forms tapered terahertz emission.Terahertz pulse passes through one
A condenser lens 6 is focused on thermal detector 7.5 external high voltage power supply 3 of annular electro pole piece 2 and circular electric pole piece, between electrode slice
Form the pace that high voltage electric field accelerates electron beam.The present invention only needs to change the i.e. achievable spirit of the high pressure applied at electrode slice
The function living of adjusting ultrashort THz wave intensity, device is simple and practical, simple operation.
Metal foil schematic device as shown in Figure 2, the circular metal paillon foil gap successively decreased successively by 7 radiuses are mutually equivalent
The truncated cone that axis is shelved, after the first circular metal paillon foil 4-1 is entered, the THz wave produced by transition radiation is to forward pass
Broadcast, electron beam continues to advance forward, into the second circular metal paillon foil 4-2.Due to the time difference, at the first circular metal paillon foil
The THz wave of generation is superimposed with the THz wave produced at the second circular metal paillon foil 4-2.Electron beam continues to advance forward.
Therefore the THz wave produced at every place is constantly superimposed, and energy gradually becomes higher, until electron beam passes through the 7th circular metal paillon foil
4-7.Electron beam is beaten on circular electric pole piece 5 after passing through the 7th circular metal paillon foil 4-7, and the ultrashort THz wave produced is gathered
Focus lens 6 are focused on thermal detector 7 to be detected.
Argon gas is used as shown in Fig. 3,4,5 as the medium in metal foil interval, respectively under the voltage of 2kv, 4kv, 6kv
The intensity effect figure of obtained terahertz pulse, opens the speed of the high-voltage electric switch accelerated electron beam of direct current, uses hot-probing
Device detects terahertz emission, obtains result shown in Fig. 3,4,5.Only it is non-conductive gas except argon gas or vacuum
Medium.
Claims (2)
1. a kind of device that High-Field Terahertz short pulse is produced based on more paper tinsel emitter cones, it is characterised in that including electron beam
Generator, annular electro pole piece, DC high-voltage power supply, circular conductive paillon foil group, circular electric pole piece, condenser lens and thermal detector；
The short electron beam exported from electron beam generator initially passes through annular electro pole piece and enters high voltage electric field, then along straightline propagation
It is irradiated on the truncated cone for coaxially being shelved by multi-disc circular conductive paillon foil gap and stacking and forming, electron beam is beaten in circular electric pole piece
On, the THz wave that electron beam gives off on each metal foil is superimposed to form tapered ultrashort terahertz pulse, ultrashort terahertz
Hereby pulse is focused lens focus to thermal detector around circular electric pole piece, annular electro pole piece and the external direct current of circular electric pole piece
High voltage power supply, forms high voltage electric field between electrode slice, accelerates the pace of electron beam.
2. producing the device of High-Field Terahertz short pulse based on more paper tinsel emitter cones according to claim 1, its feature exists
In the truncated cone is formed by equal coaxial shelve in the multi-disc circular metal paillon foil gap successively decreased successively, between adjacent metal piece
Medium be non-conducting gas medium.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711190212.0A CN107910733A (en) | 2017-11-24 | 2017-11-24 | The device of High-Field Terahertz short pulse is produced based on more paper tinsel emitter cones |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711190212.0A CN107910733A (en) | 2017-11-24 | 2017-11-24 | The device of High-Field Terahertz short pulse is produced based on more paper tinsel emitter cones |
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| CN107910733A true CN107910733A (en) | 2018-04-13 |
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| CN201711190212.0A Pending CN107910733A (en) | 2017-11-24 | 2017-11-24 | The device of High-Field Terahertz short pulse is produced based on more paper tinsel emitter cones |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108665A (en) * | 2019-05-07 | 2019-08-09 | 上海理工大学 | High speed direct picking type terahertz time-domain spectral scan method |
| CN110118989A (en) * | 2019-04-19 | 2019-08-13 | 西北核技术研究所 | Picosecond pulsed electron beam measuring device and method based on Optical transition radiation |
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| US7649328B2 (en) * | 2007-12-07 | 2010-01-19 | Duly Research Inc. | Compact high-power pulsed terahertz source |
| US20150244135A1 (en) * | 2012-08-16 | 2015-08-27 | Korea Atomic Energy Research Institute | Ultra-short terahertz pulse generator having multiple foils |
| CN105470786A (en) * | 2016-01-25 | 2016-04-06 | 中国科学技术大学 | Tunable terahertz source based on electronic cloud string and over-mode waveguide coupling mechanism |
| CN105655851A (en) * | 2015-12-29 | 2016-06-08 | 中国科学技术大学 | Non-relativistic electron beam induced dielectric waveguide-based terahertz radiation source |
| CN106253031A (en) * | 2016-08-12 | 2016-12-21 | 中国人民解放军国防科学技术大学 | Submicrosecond level long pulse high efficiency the Theory of Relativity Cherenkov's agitator |
| WO2017026819A1 (en) * | 2015-08-12 | 2017-02-16 | 한국원자력연구원 | Device for generating linearly polarized ultra-short terahertz wave |
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2017
- 2017-11-24 CN CN201711190212.0A patent/CN107910733A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7649328B2 (en) * | 2007-12-07 | 2010-01-19 | Duly Research Inc. | Compact high-power pulsed terahertz source |
| US20150244135A1 (en) * | 2012-08-16 | 2015-08-27 | Korea Atomic Energy Research Institute | Ultra-short terahertz pulse generator having multiple foils |
| WO2017026819A1 (en) * | 2015-08-12 | 2017-02-16 | 한국원자력연구원 | Device for generating linearly polarized ultra-short terahertz wave |
| CN105655851A (en) * | 2015-12-29 | 2016-06-08 | 中国科学技术大学 | Non-relativistic electron beam induced dielectric waveguide-based terahertz radiation source |
| CN105470786A (en) * | 2016-01-25 | 2016-04-06 | 中国科学技术大学 | Tunable terahertz source based on electronic cloud string and over-mode waveguide coupling mechanism |
| CN106253031A (en) * | 2016-08-12 | 2016-12-21 | 中国人民解放军国防科学技术大学 | Submicrosecond level long pulse high efficiency the Theory of Relativity Cherenkov's agitator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118989A (en) * | 2019-04-19 | 2019-08-13 | 西北核技术研究所 | Picosecond pulsed electron beam measuring device and method based on Optical transition radiation |
| CN110108665A (en) * | 2019-05-07 | 2019-08-09 | 上海理工大学 | High speed direct picking type terahertz time-domain spectral scan method |
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