CN105655851B - Terahertz emission source based on non-relativistic charged particle beam exciting media waveguide - Google Patents
Terahertz emission source based on non-relativistic charged particle beam exciting media waveguide Download PDFInfo
- Publication number
- CN105655851B CN105655851B CN201511016770.6A CN201511016770A CN105655851B CN 105655851 B CN105655851 B CN 105655851B CN 201511016770 A CN201511016770 A CN 201511016770A CN 105655851 B CN105655851 B CN 105655851B
- Authority
- CN
- China
- Prior art keywords
- laser
- terahertz emission
- charged particle
- group
- pulse train
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
This application discloses a kind of terahertz emission sources based on non-relativistic charged particle beam exciting media waveguide, comprising: pulsed laser light source, for emitting laser pulse train；Frequency regulation arrangement, for adjusting the repetition rate of the laser pulse train；Electron gun, the cathode of the electron gun are incident upon Medium Wave Guide for accelerating the electron beam group to seal in for absorbing the concurrent radio beamlet group string of the laser pulse train, the adjustable electric field formed between the cathode and anode of the electron gun；The Medium Wave Guide is used to be sent out to form terahertz emission by electron beam group series excitation；Wherein, the radiation frequency of the repetition rate of the laser pulse train and the Medium Wave Guide, which is formed, resonates.A kind of terahertz emission source based on non-relativistic charged particle beam exciting media waveguide effectively improves the energy conversion efficiency between the electronics of THz radiation source and radiation, improves radiant power, radiation frequency is adjustable, and reduces THz radiation source cost.
Description
Technical field
The present invention relates to electron accelerators, vacuum electronics technical field, more specifically to one kind based on non-opposite
By the terahertz emission source of electron-beam excitation Medium Wave Guide.
Background technique
Since THz wave is in life science, material science, the multiple fields such as the communication technology and national security have wide
Common concern of the wealthy application prospect by domestic and international scientist.THz wave refers to electromagnetism of the frequency between 0.1-30THz
Wave, the source THz are the bases for developing Terahertz science, and the THz radiation source based on non-relativistic charged particle Shu Jifa specifically includes that tradition
Smith-the Pu Saier of the backward wave oscillator (BWO) of vacuum electronics method and the THz wave band using electron beam group series excitation hair
It radiates (SMITH-PURCELL radiation).Wherein, the first THz radiation source, that is, BWO is widely used in low frequency THz wave band
Radiation source, but it needs high starting oscillation current density, as generated frequency electric current needed for the electromagnetic radiation of 1THz or more
Density will usually arrive several hundred A/cm2, considerably beyond the emissivities of existing cathode.Second of THz radiation source utilizes electronics
Smith-Pu Saier the radiation of the THz wave band of beam group's series excitation hair, does not need the electron beam of high current density as excitaton source, but
Its energy transformation ratio is lower, and radiant power only has 1mW or so；In addition, its electron beam used is rolled into a ball between the micropulse in string
Interval is unable to adjust, therefore its radiation frequency can not be adjusted.Using relativistic interval adjustable electron beam group string come
Exciting media waveguide generate THz radiation, although it can produce high-power radiation, due to velocity of electrons close to the light velocity, its
Radiation can not only can be carried out and continuously adjust in specific several frequencies；Additionally due to high-power electron beam need to pass through large-scale accelerator
It generates, therefore its cost is high, peripheral holding equipment is huge.In short, due to using grating in the prior art as radiation
Medium causes radiation conversion ratio low, and radiant power is low, due to using speed in the prior art as the relativistic electron beam of the light velocity
As the excitaton source of exciting radiation medium, cause radiation frequency non-adjustable.
Therefore, the energy conversion efficiency and radiant power between the electronics of THz radiation source and radiation how are improved, is made simultaneously
The frequency for obtaining THz radiation source is adjustable, and reduce THz radiation source cost is those skilled in the art's problem in urgent need to solve.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of terahertz based on non-relativistic charged particle beam exciting media waveguide
Hereby radiation source effectively improves the energy conversion efficiency between the electronics of THz radiation source and radiation, improves radiant power, radiation frequency
It is adjustable, and reduce THz radiation source cost.
To achieve the above object, the invention provides the following technical scheme:
A kind of terahertz emission source based on non-relativistic charged particle beam exciting media waveguide, comprising:
Pulsed laser light source, for emitting laser pulse train；
Frequency regulation arrangement, for adjusting the repetition rate of the laser pulse train；
Electron gun, the cathode of the electron gun is for absorbing the concurrent radio beamlet group string of the laser pulse train, the electricity
The adjustable electric field formed between the cathode and anode of sub- rifle is incident upon Medium Wave Guide for accelerating the electron beam group to seal in；
The Medium Wave Guide is used to be sent out to form terahertz emission by electron beam group series excitation；
Wherein, the radiation frequency of the repetition rate of the laser pulse train and the Medium Wave Guide, which is formed, resonates.
Preferably, in the above-mentioned terahertz emission source based on non-relativistic charged particle beam exciting media waveguide, the pulse
Laser light source includes:
Laser light source；
Optical path is accumulated in n group pulse, and the laser pulse for emitting the laser light source forms 2 after accumulationnIt is a to swash
Optical pulse train (n >=1).
Preferably, in the above-mentioned terahertz emission source based on non-relativistic charged particle beam exciting media waveguide, the pulse
Accumulating optical path includes:
Polarization rotator, the laser rotary 45° angle for emitting the laser light source；
Polarization beam apparatus, for the laser after polarization to be divided into two beams, the first beam polarization laser is incident to first group of reflection
In mirror, the second beam polarization laser is incident in second group of reflecting mirror；
Polarization beam combiner, for will by first group of reflecting mirror reflect after the first beam polarization laser with it is described
The second beam polarization laser after second group of reflecting mirror reflection forms laser pulse train after closing beam.
Preferably, in the above-mentioned terahertz emission source based on non-relativistic charged particle beam exciting media waveguide, the frequency
Regulating device is optical delay line, and second group of reflecting mirror is provided on the optical delay line.
Preferably, in the above-mentioned terahertz emission source based on non-relativistic charged particle beam exciting media waveguide, the polarization
Beam splitter is polarization splitting prism.
It preferably, further include using in the above-mentioned terahertz emission source based on non-relativistic charged particle beam exciting media waveguide
In the reflecting mirror for the cathode that the laser pulse train is reflexed to the electron gun.
It preferably, further include using in the above-mentioned terahertz emission source based on non-relativistic charged particle beam exciting media waveguide
In the focusing electrode being focused to electron beam group string, it is set on the cathode both ends inclined-plane of the electron gun.
Preferably, in the above-mentioned terahertz emission source based on non-relativistic charged particle beam exciting media waveguide, the medium
Waveguide is medium in the column for be coated with metal film, and the middle medium is medium in quartz glass.
It can be seen from the above technical proposal that provided by the present invention a kind of based on non-relativistic charged particle beam exciting media wave
The terahertz emission source led, comprising: pulsed laser light source, for emitting laser pulse train；Frequency regulation arrangement, for adjusting
State the repetition rate of laser pulse train；Electron gun, the cathode of the electron gun is for absorbing the concurrent radio of the laser pulse train
Beamlet group's string, the adjustable electric field formed between the cathode and anode of the electron gun is for accelerating electron beam group string
It is incident to Medium Wave Guide；The Medium Wave Guide is used to be sent out to form terahertz emission by electron beam group series excitation；Wherein, described to swash
The radiation frequency of the repetition rate of optical pulse train and the Medium Wave Guide, which is formed, to resonate.
Since the mode of Medium Wave Guide has narrow bandwidth characteristic, as radiation medium, it is capable of forming narrow spectrum radiation, when
When the radiation frequency of the repetition rate of the laser pulse train and the Medium Wave Guide forms resonance, it can be realized by electron beam group
The relevant enhancing of the terahertz emission that string generates, the energy that not only greatly improved between its electron beam group string and terahertz emission turn
Efficiency is changed, and improves radiant power.
In order to guarantee the repetition rate of the laser pulse train and the radiation frequency formation resonance of the Medium Wave Guide, first
The electric field level formed between anode and cathode by adjusting electron gun calculates the speed of the electron beam group string under electric field acceleration,
Then the mode of Medium Wave Guide, Jie as corresponding to the mode of different Medium Wave Guides are chosen according to the speed of electron beam group string
The radiation frequency of matter waveguide is different, therefore, by choosing the mode of suitable Medium Wave Guide, obtains corresponding Medium Wave Guide
Radiation frequency.Later by frequency regulation arrangement by the repetition rate of laser pulse train, so that the weight of the laser pulse train
The radiation frequency of complex frequency and the Medium Wave Guide, which is formed, to resonate.It realizes and is concerned with by the terahertz emission that electron beam rolls into a ball string generation
Enhancing not only greatly improved the energy conversion efficiency between its electron beam group string and terahertz emission, but also improve radiation
Power.
Simultaneously as the electron beam group string that the present invention generates is non-relativistic charged particle beam group string, i.e., by adjusting electricity
The electric field level formed between the anode and cathode of sub- rifle rolls into a ball the energy gone here and there to adjust electron beam, so that the speed of electron beam group string can
It adjusts, such as the energy of electron beam group string can be 150keV, corresponding speed is 0.6343 times of light velocity, the energy of electron beam group string
It can be 100keV, corresponding speed is 0.5482 times of light velocity, to realize what electron beam group string was excited in Medium Wave Guide
Radiation frequency it is adjustable.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of terahertz emission based on non-relativistic charged particle beam exciting media waveguide provided in an embodiment of the present invention
Source constructed profile；
Fig. 2 is the index path that optical path is accumulated in 3 group pulse provided in an embodiment of the present invention；
Fig. 3 is the lateral dimension of electron beam group string in the case where different voltages value and time interval with the variation of lengthwise position
Schematic diagram；
Fig. 4 is the profile figure of electron beam frequency spectrum and electron beam in Medium Wave Guide outlet port；
Fig. 5 is Medium Wave Guide dispersion curve and different-energy electric wire；
Fig. 6 is the distribution of electromagnetic radiation longitudinal electric field and its radiation for the electron-beam excitation Medium Wave Guide basic mode that simulation obtains
Spectrogram；
Fig. 7 is radiation pulse power figure when simulating obtained electron-beam excitation Medium Wave Guide basic mode；
Fig. 8 be simulation obtain electron-beam excitation Medium Wave Guide second mode when electromagnetic radiation longitudinal electric field distribution and
Its transmitted spectrum figure；
Fig. 9 is radiation pulse power figure when simulating obtained electron-beam excitation Medium Wave Guide second mode.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is provided in an embodiment of the present invention a kind of based on non-relativistic charged particle beam exciting media waveguide
Terahertz emission source constructed profile.
In a kind of specific embodiment, a kind of terahertz based on non-relativistic charged particle beam exciting media waveguide is provided
Hereby radiation source, comprising: pulsed laser light source 101, for emitting laser pulse train；Frequency regulation arrangement, it is described sharp for adjusting
The repetition rate of optical pulse train；The cathode 104 of electron gun 103, the electron gun 103 is concurrent for absorbing the laser pulse train
Radio beamlet group string, the adjustable electric field formed between the cathode 104 and anode 105 of the electron gun 103 is for accelerating
The electron beam group, which seals in, is incident upon Medium Wave Guide 106；The Medium Wave Guide 106 is used to be sent out to be formed too by electron beam group series excitation
Hertzion radiation；Wherein, the radiation frequency of the repetition rate of the laser pulse train and the Medium Wave Guide 106, which is formed, resonates.
Specifically, electron gun 103 and one end of vacuum pipe are attached, the cathode 104 and vacuum pipe of electron gun 103
Pipeline opening be oppositely arranged, Medium Wave Guide 106 and reflecting mirror are all placed in vacuum pipe, and laser pulse train is by vacuum pipe
Window be incident to mirror surface, 104 surface of cathode of electron gun 103 is then irradiated to, by photoelectric effect in cathode 104
Surface emitting goes out electron beam group string, after electron beam group string is by the electric field acceleration between 103 cathode 104 of electron gun and anode 105
Into the Medium Wave Guide 106 in vacuum pipe, the electromagnetic radiation of THz wave band is finally inspired.
Since there is the mode of Medium Wave Guide 106 narrow bandwidth characteristic to be capable of forming narrow spectrum spoke as radiation medium
Penetrate, when the radiation frequency of the repetition rate of the laser pulse train and the Medium Wave Guide 106, which is formed, to resonate, can be realized by
The relevant enhancing of the terahertz emission that electron beam group's string generates, not only greatly improved between its electron beam group string and terahertz emission
Energy conversion efficiency, and improve radiant power.In order to guarantee the laser pulse train repetition rate and the medium
The radiation frequency of waveguide 106 forms resonance, passes through the electric field level formed between the anode and cathode 105 for adjusting electron gun 103 first,
The speed for calculating the electron beam group string under electric field acceleration, then chooses Medium Wave Guide 106 according to the speed of electron beam group string
The radiation frequency of mode, the Medium Wave Guide 106 as corresponding to the mode of different Medium Wave Guides 106 is different, pass through choosing
The mode for taking suitable Medium Wave Guide 106 obtains the radiation frequency of corresponding Medium Wave Guide 106.Pass through frequency tune later
Regulating device is by the repetition rate of laser pulse train, so that the repetition rate of the laser pulse train and the Medium Wave Guide 106
Radiation frequency forms resonance.It realizes and the relevant enhancing of terahertz emission that string generates is rolled into a ball by electron beam, it not only greatly improved
Energy conversion efficiency between electron beam group's string and terahertz emission, and improve radiant power.
Simultaneously as the electron beam group string that the present invention generates is non-relativistic charged particle beam group string, i.e., by adjusting electricity
The electric field level formed between the anode and cathode 105 of sub- rifle 103 rolls into a ball the energy gone here and there to adjust electron beam, so that the speed of electron beam group string
Spend it is adjustable, such as electron beam group string energy can be 150keV, corresponding speed be 0.6343 times of light velocity, electron beam group string
Energy can be 100keV, and corresponding speed is 0.5482 times of light velocity, to realize string institute in Medium Wave Guide 106 of electron beam group
The radiation frequency of excitation it is adjustable.
Electron gun 103 of the invention accelerates electronics using DC electronic rifle, compared with the prior art in large size
For accelerator, a large amount of peripheral equipment is not needed, such as: large scale accelerating tube, microwave power source, large-scale magnet, radiation shield
Environment etc., so that the terahertz emission source provided by the invention based on non-relativistic charged particle beam exciting media waveguide 106 is at low cost
It is honest and clean.
Further, the pulsed laser light source 101 includes: laser light source 201；Optical path is accumulated in n group pulse, is used for institute
The laser pulse for stating laser light source transmitting forms 2 after accumulationnA laser pulse train (n >=1).Laser pulse passes through pulsed reactor
After the n times accumulation of product optical path, generate by 2nThe laser pulse train of a laser pulse composition.3 groups of heaps have been used in present embodiment
Product optical path, single pulse become 8 after passing through the optical path.
Further, the pulse pile-up optical path 202 includes: polarization rotator, for emit the laser light source
Laser rotary 45° angle；Polarization beam apparatus, for the laser after polarization to be divided into two beams, the first beam polarization laser is incident to first
In group reflecting mirror, the second beam polarization laser is incident in second group of reflecting mirror；Polarization beam combiner, for described first group will to be passed through
The second beam polarization laser after the first beam polarization laser and second group of reflecting mirror reflection after reflecting mirror reflection
It closes beam and forms laser pulse train later.
Further, the polarization beam apparatus is preferably polarization splitting prism.
Specifically, laser pulse train can be obtained by the pulsed reactor area method based on polarization splitting prism, as shown in Fig. 2,
After polarization laser horizontally or vertically passes through polarization rotator, polarization angle rotates 45 degree.By polarization splitting prism by its point
It is respectively two horizontal, vertical pulses at the identical polarization direction of amplitude, the pulse of horizontal direction is defined as the second beam polarization
Laser, the pulse of vertical direction are defined as the first beam polarization laser, and the pulse of horizontal direction is incident in second group of reflecting mirror, hang down
Histogram to pulse be incident in first group of reflecting mirror, it is horizontal after the reflection by first group of reflecting mirror and second group of reflecting mirror
The pulse in direction is still projected from horizontal direction, and the pulse of vertical direction is projected from vertical direction, and two pulses are in polarization coupling
Device merges, and is combined together, forms laser pulse train.
It should be pointed out that the mode of pulse pile-up includes but is not limited to above-mentioned pulse pile-up method, or use optics
Method of beat frequency etc. generates laser pulse train.In addition, in the present embodiment, polarization splitting prism can be changed to spectroscope,
Within protection scope.
Further, the frequency regulation arrangement is optical delay line, is provided with described second on the optical delay line
Group reflecting mirror.The continuously adjustable of the frequency at the interval or laser pulse train between two micropulses in laser pulse train is
It is realized under the control of optical delay line, n motor control n.Optical delay line carries second group of reflecting mirror in level side
To movement, the adjusting of the repetition rate of laser pulse train is realized by change light path.
Further, further include reflection for the laser pulse train to be reflexed to the cathode 104 of the electron gun 103
Mirror 102.Reflecting mirror 102 may be disposed in vacuum pipe.
It further, further include being set to the electronics for rolling into a ball the focusing electrode that string is focused to the electron beam
On the 104 both ends inclined-plane of cathode of rifle 103.The inclined-plane at 103 cathode of electron gun, 104 end is focusing electrode, can be gathered to electron beam
Coke can also not need focusing electrode, is focused using external magnetic field, be situated between with guaranteeing that the lateral dimension of electron beam group string is no more than
The size of matter waveguide 106.As shown in figure 3, electron beam lateral dimension is with vertical under different voltages value and time interval that simulation obtains
To the situation of change of position.
Further, the Medium Wave Guide 106 is to be coated with medium in the column of metal film, and the middle medium is stone
Medium in English glass.Medium Wave Guide 106 can be processed by fiber elongation method.
Terahertz emission source provided by the invention based on non-relativistic charged particle beam exciting media waveguide, in order to obtain some
The terahertz emission of specific frequency can be calculated by the high-voltage value between setting 103 cathode 104 of electron gun and anode 105 in electricity
Electron beam under field accelerates rolls into a ball the speed gone here and there, and the mode of Medium Wave Guide 106 is then chosen according to the speed that electron beam group goes here and there, is obtained
The radiation frequency of corresponding Medium Wave Guide 106.And the weight of laser pulse train is set according to the radiation frequency of Medium Wave Guide 106
Complex frequency f, the time interval for obtaining electronics interfascicular areRealize the repetition rate of laser pulse train with it is described
The radiation frequency of Medium Wave Guide 106 forms resonance.When setting the high pressure between the cathode 104 of electron gun 103 and anode 105 as it
When his numerical value, the time interval by setting corresponding electronics interfascicular obtains the THz radiation of other frequencies at once.
Fig. 3 is the lateral dimension of electron beam group string in the case where different voltages value and time interval with the variation of lengthwise position
Schematic diagram.Fig. 4 gives when the voltage between the anode and cathode 105 of electron gun 103 is -150kV, the time interval between laser pulse
When being 7 picoseconds, the sectional view of the electron beam frequency spectrum and electron beam simulated in 106 outlet port of Medium Wave Guide.Attached drawing 5 is given
Having gone out internal diameter is 0.4mm, and outer diameter 0.9mm, material is the color of the preceding 4 rank mode of vitreous silica (relative dielectric constant 3.8)
The electric wire of figure and different-energy is dissipated, dispersed lines ordinate corresponding with the intersection point of electric wire is radiation frequency.Attached drawing 6 is given
Go out when electron energy is 150keV, the time interval between electron beam micropulses is 7 picoseconds (1/0.1472THz), micropulse is electric
Lotus amount is 5 × 10-14When coulomb, micropulse number 16, the electron beam group string simulated passes through the wave of 10 centimeter lengths
The longitudinal electric field for leading inspired 106 basic mode of Medium Wave Guide radiation is distributed and corresponding result of spectrum analysis, such as 7 institute of attached drawing
Show, frequency 0.1472THz, the result of spectrum analysis that radiation pulse power is 1.75 watts.As shown in Fig. 8, other conditions
It is constant, when setting time interval (2/0.3848THz) between electron beam micropulses as 5.2 picoseconds, the second order mode of Medium Wave Guide 106
Formula will be excited, the longitudinal electric field distribution of radiation.As shown in Fig. 9, the electron-beam excitation Medium Wave Guide second order simulated
Radiation pulse power figure when mode.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (8)
1. a kind of terahertz emission source based on non-relativistic charged particle beam exciting media waveguide characterized by comprising
Pulsed laser light source, for emitting laser pulse train；
Frequency regulation arrangement, for adjusting the repetition rate of the laser pulse train；
Electron gun, the cathode of the electron gun is for absorbing the concurrent radio beamlet group string of the laser pulse train, the electron gun
Cathode and anode between the adjustable electric field that is formed for accelerating the electron beam group to seal in be incident upon Medium Wave Guide；Pass through
It adjusts and is formed by electric field level between the anode and cathode of the electron gun to adjust the energy of electron beam group string, so that described
The speed of electron beam group's string is adjustable；
The Medium Wave Guide is used to be sent out to form terahertz emission by electron beam group series excitation；
Wherein, the radiation frequency of the repetition rate of the laser pulse train and the Medium Wave Guide, which is formed, resonates.
2. the terahertz emission source as described in claim 1 based on non-relativistic charged particle beam exciting media waveguide, feature exist
In the pulsed laser light source includes:
Laser light source；
Optical path is accumulated in n group pulse, and the laser pulse for emitting the laser light source forms 2n laser arteries and veins after accumulation
Punching string, wherein n >=1.
3. the terahertz emission source as claimed in claim 2 based on non-relativistic charged particle beam exciting media waveguide, feature exist
In the pulse pile-up optical path includes:
Polarization rotator, the laser rotary 45° angle for emitting the laser light source；
Polarization beam apparatus, for the laser after polarization to be divided into two beams, the first beam polarization laser is incident in first group of reflecting mirror,
Second beam polarization laser is incident in second group of reflecting mirror；
Polarization beam combiner, for the first beam polarization laser and described second after being reflected by first group of reflecting mirror
The second beam polarization laser after group reflecting mirror reflection forms laser pulse train after closing beam.
4. the terahertz emission source as claimed in claim 3 based on non-relativistic charged particle beam exciting media waveguide, feature exist
In the frequency regulation arrangement is optical delay line, is provided with second group of reflecting mirror on the optical delay line.
5. the terahertz emission source as claimed in claim 4 based on non-relativistic charged particle beam exciting media waveguide, feature exist
In the polarization beam apparatus is polarization splitting prism.
6. such as the terahertz emission source described in any one of claim 1 to 5 based on non-relativistic charged particle beam exciting media waveguide,
It is characterized in that, further including the reflecting mirror for the laser pulse train to be reflexed to the cathode of the electron gun.
7. the terahertz emission source as claimed in claim 6 based on non-relativistic charged particle beam exciting media waveguide, feature exist
In further including for the focusing electrode that is focused of electron beam group string, the cathode both ends for being set to the electron gun to be oblique
On face.
8. the terahertz emission source as claimed in claim 7 based on non-relativistic charged particle beam exciting media waveguide, feature exist
In the Medium Wave Guide is medium in the column for be coated with metal film, and the middle medium is medium in quartz glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511016770.6A CN105655851B (en) | 2015-12-29 | 2015-12-29 | Terahertz emission source based on non-relativistic charged particle beam exciting media waveguide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511016770.6A CN105655851B (en) | 2015-12-29 | 2015-12-29 | Terahertz emission source based on non-relativistic charged particle beam exciting media waveguide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105655851A CN105655851A (en) | 2016-06-08 |
| CN105655851B true CN105655851B (en) | 2019-01-22 |
Family
ID=56478349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511016770.6A Active CN105655851B (en) | 2015-12-29 | 2015-12-29 | Terahertz emission source based on non-relativistic charged particle beam exciting media waveguide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105655851B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106206217B (en) * | 2016-08-31 | 2019-03-12 | 安徽华东光电技术研究所 | Special-shaped anode structure and processing technology thereof |
| CN107623243A (en) * | 2017-09-18 | 2018-01-23 | 中国科学技术大学 | A kind of high power Terahertz free-electron laser radiation source |
| CN107910733A (en) * | 2017-11-24 | 2018-04-13 | 上海理工大学 | The device of High-Field Terahertz short pulse is produced based on more paper tinsel emitter cones |
| CN108550509B (en) * | 2018-05-21 | 2019-10-25 | 中国科学技术大学 | A kind of electromagenetic wave radiation system and electromagenetic wave radiation method |
| CN109683424B (en) * | 2018-12-27 | 2020-10-27 | 中国科学技术大学 | Multi-frequency ultrashort laser pulse train generating device |
| CN110444996B (en) * | 2019-07-05 | 2020-08-21 | 清华大学 | Coherent Smith-Purcell radiation device and coherent THz radiation signal generation method |
| CN111341630B (en) * | 2020-04-07 | 2022-02-01 | 电子科技大学 | Photocathode excited electromagnetic wave generator |
| CN112952532B (en) * | 2021-01-27 | 2022-11-22 | 电子科技大学 | Terahertz radiation generation method based on interaction of multi-electron beam and plasma |
| CN112947259B (en) * | 2021-04-07 | 2022-08-02 | 重庆理工大学 | Non-relativistic high-current pulse electron beam single chip microcomputer fine synchronization control method |
| CN113488831B (en) * | 2021-07-09 | 2022-07-01 | 电子科技大学 | Terahertz gas laser of electron beam pumping |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0954009A2 (en) * | 1998-04-29 | 1999-11-03 | DLR Deutsches Zentrum für Luft- und Raumfahrt e.V. | Tunable electromagnetic radiation source |
| CN101364517A (en) * | 2007-08-09 | 2009-02-11 | 李德杰 | Terahertz radiation source |
| CN102403180A (en) * | 2010-09-08 | 2012-04-04 | 中国科学院电子学研究所 | Distribution terahertz oscillator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050242287A1 (en) * | 2004-04-30 | 2005-11-03 | Hosain Hakimi | Optical terahertz generator / receiver |
-
2015
- 2015-12-29 CN CN201511016770.6A patent/CN105655851B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0954009A2 (en) * | 1998-04-29 | 1999-11-03 | DLR Deutsches Zentrum für Luft- und Raumfahrt e.V. | Tunable electromagnetic radiation source |
| CN101364517A (en) * | 2007-08-09 | 2009-02-11 | 李德杰 | Terahertz radiation source |
| CN102403180A (en) * | 2010-09-08 | 2012-04-04 | 中国科学院电子学研究所 | Distribution terahertz oscillator |
Non-Patent Citations (2)
| Title |
|---|
| Generation of quasiequally spaced ultrashort microbunches in a photocathode rf gun;Zhigang He et al.;《Nuclear Instruments and methods in Physics Research》;20141212;第3页4-6段，附图4-5 |
| Nonrelativistic electron bunch train for coherently enhanced terahertz radiation sources;Yuelin et al.;《Applied Physics Letters》;20080102;第92卷(第1期);摘要，第2页3段-第3页第8段 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105655851A (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105655851B (en) | Terahertz emission source based on non-relativistic charged particle beam exciting media waveguide | |
| Amico et al. | Forward THz radiation emission by femtosecond filamentation in gases: theory and experiment | |
| Hemsing et al. | Beam by design: Laser manipulation of electrons in modern accelerators | |
| Kneip et al. | Near-GeV acceleration of electrons by a nonlinear plasma wave driven by a self-guided laser pulse | |
| Liu et al. | Terahertz radiation source in air based on bifilamentation of femtosecond laser pulses | |
| Antipov et al. | Subpicosecond bunch train production for a tunable mJ level THz source | |
| CN105742943B (en) | A kind of tunable narrow-band compact terahertz emission source based on free-electron laser | |
| Wang et al. | Interaction of an ultrarelativistic electron bunch train with a W-band accelerating structure: high power and high gradient | |
| Franzi et al. | Recirculating-planar-magnetron simulations and experiment | |
| CN107623243A (en) | A kind of high power Terahertz free-electron laser radiation source | |
| Heuer et al. | Observations of a field-aligned ion/ion-beam instability in a magnetized laboratory plasma | |
| CN106253030A (en) | Hollow laser plasma produces the device and method of tunable terahertz emission | |
| CN109374595A (en) | A kind of detection system of ultrafast pulse radiolysis | |
| Shafir et al. | High power microwave source for a plasma wakefield experiment | |
| Eckey et al. | Strong-field Breit-Wheeler pair production with bremsstrahlung γ rays in the perturbative-to-nonperturbative-transition regime | |
| CN105470786A (en) | Tunable terahertz source based on electronic cloud string and over-mode waveguide coupling mechanism | |
| Feng et al. | Optimization and testing of groove-shaped grid-controlled modulated X-ray tube for X-ray communication | |
| WO2016166549A1 (en) | Coherent radiation source | |
| Blair et al. | Generation of rf radiation by low-intensity laser pulse trains in air | |
| CN112952532B (en) | Terahertz radiation generation method based on interaction of multi-electron beam and plasma | |
| Meng et al. | Smith-Purcell free electron laser based on the semi-elliptical resonator | |
| Nagao et al. | High-power microwave generation by double-anode virtual cathode oscillator | |
| Meng | Smith–Purcell free electron laser based on a semi-conical resonator | |
| Yan et al. | Investigating instabilities of long, intense laser pulses in plasma wakefield accelerators | |
| Wu et al. | The dependence on optical energy of terahertz emission from air plasma induced by two-color femtosecond laser-pulses |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |