CN102956415A - Ray representation method of gyrotron quasi-optical output system - Google Patents
Ray representation method of gyrotron quasi-optical output system Download PDFInfo
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- CN102956415A CN102956415A CN2011102497265A CN201110249726A CN102956415A CN 102956415 A CN102956415 A CN 102956415A CN 2011102497265 A CN2011102497265 A CN 2011102497265A CN 201110249726 A CN201110249726 A CN 201110249726A CN 102956415 A CN102956415 A CN 102956415A
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Abstract
The invention discloses a ray representation method of a gyrotron quasi-optical output system, and relates to the microwave technology. The method comprises the following steps of: a) determining an incident light angle; b) selecting the curved surface shape of two mirror reflectors; c) orderly placing the first mirror reflector and the second mirror reflector on an output light path of a gyrotron radiator; d) converting the propagation characteristics of a millimeter wave beam on the first mirror reflector and the second mirror reflector into a light propagation process of a light ray on the first mirror reflector and the second mirror reflector; e) charting the reflected propagation path of the light ray in a first mirror reflector and second mirror reflector conversion system; f) according to the propagation path chart formed in the step e), guiding design and rectification of the curved surface of the reflector of a quasi-optical mode converter, and finishing. The representation method provided by the invention is accurate, simple, practical and low in cost.
Description
Technical field
The present invention relates to microwave technology, particularly high power gyrotron Millimeter-Wave Source is the ray representation of the quasi-optical output system of a kind of gyrotron.
Background technology
Gyrotron is the fast wave device that a class grows up take electronic cyclotron maser as mechanism, its working mechanism can be regarded as the variation that utilizes electronics cyclotron frequency in magnetic field and the relativistic effect generation clustering of electronics, electronics and synchronous electric magnetic wave are interacted, excite to produce the High-Power Microwave radiation.The structure of gyrotron is relatively simple, can produce in many ways high impulse peak power and continuous wave power at millimeter and submillimeter region, has filled up traditional microwave pipe and laser in the blank of this wave band.At present, gyrotron has been widely used in the fields such as plasma heating, high-energy particle accelerator, millimeter wave directed energy weapon, material processed and plasma chemistry of controlled thermonuclear fusion.
Along with gyrotron develops towards high-frequency, high power, its mode of operation adopts low-loss high-order cavity modes mostly, and most typical mode of operation has TE
0nAngle symmetric mode, TE
MnThe side corner mould (m＞＞n and n=1 or 2) and TE
MnAsymmetric phantom (m＞＞1 and n＞2).In fact and be not suitable for the transmission of free space because higher order mode exists serious diffraction and polarization loss in transmission course in the cavity,, the higher order mode in the cavity must be converted to the low order waveguide mode that is beneficial to transmission or the Gaussian beam of free space.In order directly the complicated field structure of high-order mode of operation in the gyrotron to be converted to the Gaussian beam of linear polarization, can be realized by quasi-Optical Mode Converter.Generally speaking, quasi-Optical Mode Converter combines (as shown in Figure 1) by TV university size waveguide radiator and two curved reflector plane systems of an end openings.Indicating 1 among Fig. 1 is cavity, and indicating 2 is radiator, and indicating 3 is the first specular reflector, and indicating 4 is the second specular reflector, and indicating 5 is output window, and indicating 6 is microbeam, and indicating 7 is electron beam.For millimeter wave or submillimeter wave, quasi-Optical Mode Converter is that transversary size or vertical structure size all belong to the TV university size, use when needing huge computational resource and computer when high frequency analog simulation software alignment light mode converter carries out complete three-dimensional high frequency analog computation, be difficult to effectively instruct quickly the design work of quasi-Optical Mode Converter.
Summary of the invention
The objective of the invention is to disclose the ray representation of the quasi-optical output system of a kind of gyrotron, the problem that exists to solve prior art.
For achieving the above object, technical solution of the present invention is:
The ray representation of the quasi-optical output system of a kind of gyrotron, it comprises step:
A) determine angle of incident light;
B) curve form of selection two specular reflectors;
C) the first specular reflector, the second specular reflector sequentially are positioned on the output light path of gyrotron radiator;
D) according to the millimeter wave beam that produces from the gyrotron radiator and the principle of light ray equivalence, be the light transmition process of light ray on the first specular reflector and the second specular reflector with millimeter wave beam in the equivalence of the propagation characteristic on the first specular reflector and the second specular reflector;
E) according to the optical reflection law and with CAD drafting instrument software, with the reflected propagation paths drawing of light ray in the first specular reflector and the second specular reflector converting system, clearly express;
F) according to step e) propagation path figure, understand and grasp the propagation path of millimeter wave beam in whole converting system, if meet the requirements, namely instruct design and the curved surface correction of quasi-Optical Mode Converter curved surface of reflector, finish.
The curve form of the specular reflector described step b) is parabola, cylinder, ellipsoid, sphere or hyperboloid.
The ray representation of the quasi-optical output system of described gyrotron, its described step f) in, if step
E) propagation path figure is undesirable, returns step b), re-start.
The ray representation of the quasi-optical output system of described gyrotron, it is used for the quasi-optical output system of gyrotron and uses the expression that ray, the quasi-optical resonant cavity application ray of gyrotron or optics are used ray.
Representation of the present invention, accurately simple and practical, cost is low, can instruct design and the curved surface correction of quasi-Optical Mode Converter curved surface of reflector.
Description of drawings
Fig. 1 is a kind of gyrotron of built-in quasi-Optical Mode Converter;
Fig. 2 a-Fig. 2 e is the parabolic minute surface reflector of one side, is used for the implement process of ray representation on specular reflector of the quasi-optical output system of demonstration gyrotron; Wherein:
Fig. 2 a uses the parabolic minute surface reflector that the CAD graphics software generates;
Fig. 2 b has provided the light beam ray that the light source (placing on the focus O position) by parabolic minute surface reflector sends;
Fig. 2 c is the plane of existence, summit through light ray and parabolic minute surface reflector, and there are intersecting lens in this plane and parabolic minute surface reflector, and intersecting lens is parabolic curve; Cross a point and make datum level, datum level is perpendicular to parabolic curve simultaneously;
Fig. 2 d is take datum level as the plane of symmetry, makes the mirror image of light ray, then forms reflection ray, has so far finished the primary event process of light on parabolic minute surface reflector by light source (O point) emission;
Fig. 2 e makes other five light rays (sign is respectively 11-15) and corresponding reflection ray thereof;
Fig. 3 is the ray representation flow chart of the quasi-optical output system of a kind of gyrotron of the present invention.
Number in the figure:
Cavity-1 radiator-2 the first specular reflector-3
The second specular reflector-4 output window-5 microbeam-6
Electron beam-7 light ray-8 reverberation ray-8a
Intersecting lens-9 datum level-10
Article five, light ray-11,12,13,14,15
Article five, reflection ray-11a, 12a, 13a, 14a, 15a.
Embodiment
The ray representation method of the quasi-optical output system of a kind of gyrotron of the present invention, it is the lightlike line characteristic according to millimeter wave or submillimeter wave, the millimeter wave beam equivalence that will produce from the gyrotron radiator is light ray, is the light transmition process of light ray on the first specular reflector and the second specular reflector with millimeter wave beam in the equivalence of the propagation characteristic on the first specular reflector and the second specular reflector; The reflected propagation paths of light ray in the first specular reflector and the second specular reflector converting system clearly can be expressed according to the optical reflection law and by means of CAD drafting instrument software, thereby understand and grasp the propagation path of millimeter wave beam in whole converting system, in order to design and the curved surface correction of instructing the quasi-Optical Mode Converter curved surface of reflector.
Below in conjunction with accompanying drawing embodiment of the present invention are described.
Fig. 1 is a kind of gyrotron of built-in quasi-Optical Mode Converter.This quasi-Optical Mode Converter comprises a radiator and two specular reflectors (quantity of specular reflector is relevant with conversion quality and the mode conversion efficiency of output window place Gaussian beam).High-order mode of operation and circulating beam interact and produce high power millimeter wave in gyrotron mutual effect cavity, millimeter wave is sent by the radiator radiation, elder generation is by the reflection adjustment of specular reflector 3 and specular reflector 4, the millimeter wave that higher order mode distributes converts the millimeter wave of Gaussian Profile to, finally by being transferred out by output window.
According to the lightlike line characteristic of millimeter wave or submillimeter wave, will be the light transmition process of light ray on this converting system from the propagation characteristic equivalence of millimeter wave beam on the converting system of specular reflector 3 and specular reflector 4 compositions that radiator produces; The reflected propagation paths of light ray in converting system clearly can be expressed according to the optical reflection law and by means of the CAD drafting instrument, thereby be understood and grasped the propagation characteristic of millimeter wave beam in whole converting system.
For the implementation process of the quasi-optical output system ray representation of gyrotron is described, be parabolic surface is demonstrated light ray as example communication process take a specular reflector.In order clearly to describe the process that light ray forms and drawing is described, adopted the mode of the every width of cloth figure of each step to set forth.Fig. 2 a-Fig. 2 e has provided according to optical reflection law and reflection and the drawing course of light ray on parabolic minute surface reflector that will be sent by light source (placing on the focus O position) by means of the CAD drafting instrument.Fig. 2 a uses the parabolic minute surface reflector that the CAD graphics software generates.Fig. 2 b has provided the light beam ray 8 that the light source (placing on the focus O position) by parabolic minute surface reflector sends, and light ray 8 intersects at a point with parabolic minute surface reflector.There is a plane in summit through light ray 8 and parabolic minute surface reflector, and there are intersecting lens 9 in this plane and parabolic minute surface reflector, and intersecting lens 9 is parabolic curve; Cross a point and make datum level 10, datum level 10 is perpendicular to parabolic curve 9, shown in Fig. 2 c simultaneously.Take datum level 10 as the plane of symmetry, make the mirror image of light ray 8, then form reflection ray 8a, so far finished the primary event process of light on parabolic minute surface reflector by light source (O point) emission, shown in Fig. 2 d.In like manner, can make other five light rays (sign is respectively 11-15) and corresponding reflection ray (sign is respectively 11a-15a) thereof, shown in Fig. 2 e.As seen from the figure: because light source places the focal position of parabolic minute surface reflector, therefore reflection ray (is numbered: 11a-15a) parallel to each other, that is to say the light that is sent by focus, emergent ray after the parabolic minute surface reflector reflection of process is directional light, thereby has also verified the correctness of this drafting method and process.Although incident ray is to be sent by focus in Fig. 2 a-Fig. 2 e, and the incident ray of specular reflector is light (angle by radiator determine) with special angle incident in the quasi-optical patterns of change device of reality, but reflection and drawing course and Fig. 2 a-Fig. 2 e on specular reflector is identical for light, the light that is reflected by specular reflector is the incident ray on the next stage specular reflector, its reflection and drawing course thereof are also still identical, so Fig. 2 a-Fig. 2 e ray representation of having explained the quasi-optical output system of gyrotron fully.
The ray representation of the quasi-optical output system of a kind of gyrotron of the present invention, flow process as shown in Figure 3.Comprise step:
A) determine angle of incident light;
B) curve form of selection two specular reflectors, this curve form is parabola, cylinder, ellipsoid, sphere or hyperboloid;
C) the first specular reflector, the second specular reflector sequentially are positioned on the output light path of gyrotron radiator;
D) according to the millimeter wave beam that produces from the gyrotron radiator and the principle of light ray equivalence, be the light transmition process of light ray on the first specular reflector and the second specular reflector with millimeter wave beam in the equivalence of the propagation characteristic on the first specular reflector and the second specular reflector;
E) according to the optical reflection law and with CAD drafting instrument software, with the reflected propagation paths drawing of light ray in the first specular reflector and the second specular reflector converting system, clearly express;
F) according to step e) propagation path figure, understand and grasp the propagation path of millimeter wave beam in whole converting system, if meet the requirements, namely instruct design and the curved surface correction of quasi-Optical Mode Converter curved surface of reflector, finish;
If undesirable, return step b), re-start.
Claims (4)
1. the ray representation of the quasi-optical output system of gyrotron is characterized in that, comprises step:
A) determine angle of incident light;
B) curve form of selection two specular reflectors;
C) the first specular reflector, the second specular reflector sequentially are positioned on the output light path of gyrotron radiator;
D) according to the millimeter wave beam that produces from the gyrotron radiator and the principle of light ray equivalence, be the light transmition process of light ray on the first specular reflector and the second specular reflector with millimeter wave beam in the equivalence of the propagation characteristic on the first specular reflector and the second specular reflector;
E) according to the optical reflection law and with CAD drafting instrument software, with the reflected propagation paths drawing of light ray in the first specular reflector and the second specular reflector converting system, clearly express;
F) according to step e) propagation path figure, understand and grasp the propagation path of millimeter wave beam in whole converting system, if meet the requirements, namely instruct design and the curved surface correction of quasi-Optical Mode Converter curved surface of reflector, finish.
2. the ray representation of the quasi-optical output system of gyrotron as claimed in claim 1 is characterized in that, described step b) in the curve form of specular reflector be parabola, cylinder, ellipsoid, sphere or hyperboloid.
3. the ray representation of the quasi-optical output system of gyrotron as claimed in claim 1 is characterized in that, described step f) in, if step e) propagation path figure undesirable, return step b), re-start.
4. the ray representation of the quasi-optical output system of gyrotron as claimed in claim 1, it is characterized in that, the ray representation of the quasi-optical output system of described gyrotron is used for the quasi-optical output system of gyrotron and uses the expression that ray, the quasi-optical resonant cavity application ray of gyrotron or optics are used ray.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412983A (en) * | 2013-07-22 | 2013-11-27 | 电子科技大学 | Quasi-optical phase correction surface design method |
| CN104466324A (en) * | 2014-11-14 | 2015-03-25 | 华中科技大学 | Electron cyclotron resonance heating millimeter wave emitter |
| CN104795299A (en) * | 2015-05-07 | 2015-07-22 | 电子科技大学 | Quasi-optical mode converter capable of realizing double frequency separation |
| CN106450595A (en) * | 2016-11-21 | 2017-02-22 | 山东省科学院海洋仪器仪表研究所 | Quasi-optical mode conversion device with double-beam output |
| CN109712853A (en) * | 2018-12-25 | 2019-05-03 | 中国工程物理研究院应用电子学研究所 | Harmonic wave gyrotron of the DC coil for magnetic |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4661744A (en) * | 1983-03-11 | 1987-04-28 | Thomson-Csf | Electromagnetic energy generators having resonating cavity with reflecting zones |
| EP0281858A1 (en) * | 1987-03-03 | 1988-09-14 | Centre de Recherches en Physique des Plasmas | High-power gyrotron for generating electromagnetic millimeter or submillimeter waves |
| CH670728A5 (en) * | 1986-09-08 | 1989-06-30 | En Physiquedes Plasmas Crpp Ce | Quasi-optical gyrotron with aspherical concave mirror resonator - improves efficiency of helical electron beam interaction with alternating magnetic field midway between elliptical mirror halves |
| JPH07254371A (en) * | 1994-03-15 | 1995-10-03 | Toshiba Corp | Gyrotron device |
-
2011
- 2011-08-29 CN CN201110249726.5A patent/CN102956415B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4661744A (en) * | 1983-03-11 | 1987-04-28 | Thomson-Csf | Electromagnetic energy generators having resonating cavity with reflecting zones |
| CH670728A5 (en) * | 1986-09-08 | 1989-06-30 | En Physiquedes Plasmas Crpp Ce | Quasi-optical gyrotron with aspherical concave mirror resonator - improves efficiency of helical electron beam interaction with alternating magnetic field midway between elliptical mirror halves |
| EP0281858A1 (en) * | 1987-03-03 | 1988-09-14 | Centre de Recherches en Physique des Plasmas | High-power gyrotron for generating electromagnetic millimeter or submillimeter waves |
| JPH07254371A (en) * | 1994-03-15 | 1995-10-03 | Toshiba Corp | Gyrotron device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412983A (en) * | 2013-07-22 | 2013-11-27 | 电子科技大学 | Quasi-optical phase correction surface design method |
| CN103412983B (en) * | 2013-07-22 | 2016-05-11 | 电子科技大学 | A kind of quasi-optical phase place tru(e)ing face method for designing |
| CN104466324A (en) * | 2014-11-14 | 2015-03-25 | 华中科技大学 | Electron cyclotron resonance heating millimeter wave emitter |
| CN104466324B (en) * | 2014-11-14 | 2017-07-07 | 华中科技大学 | A kind of Electron Cyclotron Resonance Heating millimeter wave launcher |
| CN104795299A (en) * | 2015-05-07 | 2015-07-22 | 电子科技大学 | Quasi-optical mode converter capable of realizing double frequency separation |
| CN106450595A (en) * | 2016-11-21 | 2017-02-22 | 山东省科学院海洋仪器仪表研究所 | Quasi-optical mode conversion device with double-beam output |
| CN106450595B (en) * | 2016-11-21 | 2021-08-17 | 山东省科学院海洋仪器仪表研究所 | Quasi-optical mode conversion device with double-beam output |
| CN109712853A (en) * | 2018-12-25 | 2019-05-03 | 中国工程物理研究院应用电子学研究所 | Harmonic wave gyrotron of the DC coil for magnetic |
| CN109712853B (en) * | 2018-12-25 | 2021-05-14 | 中国工程物理研究院应用电子学研究所 | Harmonic gyrotron for supplying magnetism to direct current coil |
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