CN103149769A - Brillouin scattering device - Google Patents
Brillouin scattering device Download PDFInfo
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- CN103149769A CN103149769A CN2013100251024A CN201310025102A CN103149769A CN 103149769 A CN103149769 A CN 103149769A CN 2013100251024 A CN2013100251024 A CN 2013100251024A CN 201310025102 A CN201310025102 A CN 201310025102A CN 103149769 A CN103149769 A CN 103149769A
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Abstract
The invention provides a Brillouin scattering device, which comprises a parabolic reflector, a stimulated Brillouin scattering medium container and a laser emitter, and is characterized in that a through hole used for allowing the laser to pass is arranged in the center part of the parabolic reflector, a laser beam incident from the through hole sequentially passes through a first focus and a second focus of the parabolic reflector, the stimulated Brillouin scattering medium container is a ball-shaped light transmission container, in addition, the ball center of the ball shape is positioned on the second focus, the laser emitter can rotate, in addition, in the rotation process of the laser emitter, the laser emitted by the laser emitter always firstly passes through the first focus and is then emitted onto the parabolic reflector, and the laser beam incident from the through hole is interfered with the laser beam emitted from the laser emitter.
Description
Technical field
The present invention relates to stimulated Brillouin scattering, relate in particular to a kind of container that occurs for liquid or gas stimulated Brillouin scattering, belong to the photoelectron technology field.
Background technology
the stimulated Brillouin scattering device of prior art generally is divided into two kinds, a kind of is flashlight and pump light same light path, another is that flashlight and pump light exist intersecting angle, stimulated Brillouin scattering for these two kinds of forms, has respectively the different containers that is used for accommodating respective liquid or gas, stimulated Brillouin scattering for same light path, cell therefor is generally rectangle or the square of transparent cylindrical shape or rule, only need to produce the laser of flashlight and get final product for the laser that amplifies in the incident of same light path order when carrying out the stimulated Brillouin scattering experiment, there is the stimulated Brillouin scattering of angle for flashlight and pump light, some cell therefors have been invented by Harbin Institute of Technology, but these containers all exist a defective, in order to reduce the loss that is caused by reflected light, needing to keep the incident angle of laser beam is 90 degree, so for certain medium pool, angle between two bundle laser beam is fixed, because being used for two planes of incidence of incident two bundle laser beam, fixes by container itself, so such container can only be the experimentation of completing fixed angle, if want to change the angle between two bundle laser books in experimentation, basically can not realize, but in a lot of situations, we need to change the angle between two bundle laser beam, and from essence, the situation of same light path just has a kind of special case of angle situation, also namely wherein angle is zero degree, for above-mentioned situation, just need to prepare the container of different angles, the cost height is not said, and can take very large space in storage and use, and for limited testing table, often need to save space as much as possible.
Summary of the invention
The present invention puts forward for above-mentioned defective, the container that a kind of stimulated Brillouin scattering for liquid or gas occurs has been proposed, use this container, at least can one of address the above problem, it can change arbitrarily the angle between two bundle laser beam, this angle almost can change to 90 degree from 0 degree, and in the process of Angulation changes, the incident angle on the medium pool surface that can realize all the time two bundle laser beam is 90 degree, the variety of issue of having mentioned above well having solved, reduce cost, saved the space.
according to one embodiment of the invention, a kind of Brillouin scattering device is provided, comprise parabolic mirror, the SBS medi um container, laser beam emitting device and the first laser instrument, it is characterized in that: the center of parabolic mirror is provided with the through hole that passes for laser, successively passed through the first focus and second focus of parabolic mirror by the laser beam of this through hole incident, described SBS medi um container is spherical light transmission container, this spherical centre of sphere is positioned on described the second focus, described laser beam emitting device can rotate, and in the process that laser beam emitting device rotates, always first pass through described the first focus by the laser beam that laser beam emitting device sends, incide again on described parabolic mirror, the laser beam of being sent by laser beam and the laser beam emitting device of described through hole incident is concerned with, described laser beam by through hole incident is launched by the first laser instrument.
According to one embodiment of the invention, the rotation of described laser beam emitting device is to realize by the slip on take the first focus as circular circular guideway.
According to one embodiment of the invention, described laser beam emitting device comprises optical fiber and light transmitting terminal.
According to one embodiment of the invention, described laser beam emitting device is second laser, and described the first laser instrument and the second laser beam have identical seed source.
according to another embodiment, a kind of Brillouin scattering method is provided, the first laser beam is through the first focus and second focus of this parabolic mirror of priority process after the central through hole of parabolic mirror, the SBS medi um container of spherical printing opacity is set at described the second focus place, the described spherical centre of sphere overlaps with the second focus, the second laser beam that rotating laser beam emitting device sends first reenters through the first focus all the time and is mapped on parabolic mirror, the second laser beam of polished object face mirror reflects intersects at described centre of sphere place and the first laser beam, described the first laser beam and the second laser beam are concerned with.
According to another embodiment, the angle between described the first laser beam and the second laser beam is greater than 0 degree, less than 90 degree.
Description of drawings
Accompanying drawing 1 is the schematic diagram of the container that occurs of the stimulated Brillouin scattering for liquid or gas of the present invention;
In above-mentioned figure, 1 expression parabolic mirror, parabola first focus of 2 expression parabolic mirrors, 3 expression SBS medi um containers, 4 and 5 expressions are used for the two bundle laser beam that stimulated Brillouin scattering occurs, the second focus of 6 expression parabolic mirrors, 7 expression laser beam emitting devices, 8 expression laser instruments.
Embodiment
The below will describe the present invention in detail on basis by reference to the accompanying drawings.The SBS medi um container of 3 expression printing opacities, it is spheroidal, be used for accommodating liquid or the gas that carries out stimulated Brillouin scattering, this container is provided be used to the import that pours into and/or pour out SBS medi um and/or outlet, belong to well-known to those skilled in the art due to import and outlet being set at such device, no longer be described in detail for the setting of import and outlet.The centre of sphere of the SBS medi um container of this spheroidal is positioned on the second focus of parabolic mirror 1, laser beam emitting device 7 can parabolic mirror the first focus be that the center of circle moves in a circle, be also that laser beam emitting device 7 can be rotated centered by the first focus of parabolic mirror, and passed all the time the first focus of parabolic mirror by the light that laser beam emitting device 7 sends.The center of parabolic mirror 1 wherein is provided with the through hole that passes for laser.when carrying out stimulated Brillouin scattering, at first be full of in the SBS medi um container be used to the liquid that carries out stimulated Brillouin scattering or gas, then (this laser beam is as one of light beam that participates in stimulated Brillouin scattering for the laser beam of laser instrument 8 being sent, an other laser beam is provided by laser beam emitting device 7) with the through-hole alignment at parabolic mirror 1 center, make this laser beam pass this through hole, this laser beam is laser beam 5, the first focus of laser beam 5 process parabolic mirror after passing described through hole, then be directly incident in the SBS medi um container of spheroidal and pass the centre of sphere of this ball, also namely can be by the second focus of parabolic mirror, the laser beam 4 of being sent by laser beam emitting device 7 is inciding on parabolic mirror through after the first focus of parabolic mirror, then polished object face mirror reflects, the light of polished object face mirror reflects also can incide on the centre of sphere of described ball, and laser beam emitting device 7 wherein is rotatable, the way of realization of its rotation can be that a guide rail take the first focus as the center of circle is set, and laser beam emitting device 7 can slide on this guide rail.Like this, the rotation by laser beam 4 can realize that light beam 4 and light beam 5 sentence different angles at the centre of sphere and intersect.Because laser beam 4 is the first focus through parabolic mirror all the time, and the centre of sphere of ball is positioned on the second focus of parabolic mirror, so the laser beam by parabolic mirror reflects must be passed through the centre of sphere, must pass through the another one focus because send light by a paraboloidal focus through after parabolic reflector.Like this, by the design cleverly of this device, obtain the crossing effect of different angles when having realized the laser beam beam splitting, thereby can realize stimulated Brillouin scattering experiment at any angle.And all the time by the center of circle, so the incident angle of two bundle laser beam on sphere remains 90 degree, can realize minimizes light loss so all the time due to two bundle laser beam.
In the present invention, the stimulated Brillouin scattering experiment that this device can not be realized going the same way fully, the angle of its realization should be greater than 0 less than 90 degree.
Laser beam emitting device wherein can be that the part guiding of the light laser instrument 8 launched by optical fiber comes then to be penetrated by the light transmitting terminal, can be also to have the laser instrument of identical seed source with laser instrument 8, laser instrument 8 is as the first laser instrument, and as the laser instrument of laser beam emitting device as second laser, as long as can guarantee that laser beam 4 and laser beam 5 are the two bundle laser beam that are concerned with, realize that the two relevant laser beam of bundle also have a lot of additive methods, this knows for those skilled in the art, also needn't be described in more details at this.
Claims (6)
1. Brillouin scattering device, comprise parabolic mirror, the SBS medi um container, laser beam emitting device and the first laser instrument, it is characterized in that: the center of parabolic mirror is provided with the through hole that passes for laser beam, successively passed through the first focus and second focus of parabolic mirror by the laser beam of this through hole incident, described SBS medi um container is spherical light transmission container, this spherical centre of sphere is positioned on described the second focus, described laser beam emitting device can rotate, and in the process that laser beam emitting device rotates, always first pass through described the first focus by the laser beam that laser beam emitting device sends, incide again on described parabolic mirror, the laser beam of being sent by laser beam and the laser beam emitting device of described through hole incident is concerned with, wherein launched by described the first laser instrument by the laser beam of through hole incident.
2. according to claim 1 Brillouin scattering device, the rotation of described laser beam emitting device are to realize by the slip on take the first focus as circular circular guideway.
3. according to claim 1 Brillouin scattering device, described laser beam emitting device comprises optical fiber and light transmitting terminal.
4. according to claim 1 Brillouin scattering device, described laser beam emitting device is second laser, and is described
The first laser instrument and second laser have identical seed source.
5. Brillouin scattering method, the first laser beam is through the first focus and second focus of this parabolic mirror of priority process after the central through hole of parabolic mirror, the SBS medi um container of spherical printing opacity is set at described the second focus place, the described spherical centre of sphere overlaps with the second focus, the second laser beam that rotating laser beam emitting device sends first reenters through the first focus all the time and is mapped on parabolic mirror, the second laser beam of polished object face mirror reflects intersects at described centre of sphere place and the first laser beam, described the first laser beam and the second laser beam are concerned with.
6. according to claim 5 method, the angle between described the first laser beam and the second laser beam is greater than 0 degree, less than 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025102.4A CN103149769B (en) | 2013-01-18 | 2013-01-18 | Brillouin scattering device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025102.4A CN103149769B (en) | 2013-01-18 | 2013-01-18 | Brillouin scattering device |
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| CN103149769A true CN103149769A (en) | 2013-06-12 |
| CN103149769B CN103149769B (en) | 2015-08-19 |
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| CN201310025102.4A Expired - Fee Related CN103149769B (en) | 2013-01-18 | 2013-01-18 | Brillouin scattering device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242476A (en) * | 2015-10-26 | 2016-01-13 | 华北电力大学（保定） | Stimulated Brillouin scattering container with grooves and method |
| CN105242475A (en) * | 2015-10-26 | 2016-01-13 | 华北电力大学（保定） | Ladder type stimulated Brillouin scattering container and method |
| CN105404070A (en) * | 2015-12-18 | 2016-03-16 | 华北电力大学（保定） | Device and method for simultaneous generation and enhancement of bidirectional stimulated scattering by vertical guide rail pumping |
| CN105404069A (en) * | 2015-12-18 | 2016-03-16 | 华北电力大学（保定） | Device and method for simultaneous generation and enhancement of bidirectional stimulated scattering by horizontal guide rail pumping |
| CN105511198A (en) * | 2015-12-18 | 2016-04-20 | 华北电力大学（保定） | Forward-backward scattering compatible device and method |
| CN109946267A (en) * | 2019-04-18 | 2019-06-28 | 南昌航空大学 | Gas Rayleigh-Brillouin spectral lines measuring device and method |
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| CN102818759A (en) * | 2012-07-19 | 2012-12-12 | 华中科技大学 | On-line measurement system and method for shape parameters of wet particles based on light scattering |
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| JPH03223712A (en) * | 1990-01-30 | 1991-10-02 | Citizen Watch Co Ltd | Laser light scanner |
| CN1236899A (en) * | 1998-12-29 | 1999-12-01 | 西安交通大学 | Method and apparatus for optical solidifying and shaping by line scan with non-laser light source |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242476A (en) * | 2015-10-26 | 2016-01-13 | 华北电力大学（保定） | Stimulated Brillouin scattering container with grooves and method |
| CN105242475A (en) * | 2015-10-26 | 2016-01-13 | 华北电力大学（保定） | Ladder type stimulated Brillouin scattering container and method |
| CN105242475B (en) * | 2015-10-26 | 2018-01-12 | 华北电力大学（保定） | A kind of stepped stimulated Brillouin scattering container and method |
| CN105404070A (en) * | 2015-12-18 | 2016-03-16 | 华北电力大学（保定） | Device and method for simultaneous generation and enhancement of bidirectional stimulated scattering by vertical guide rail pumping |
| CN105404069A (en) * | 2015-12-18 | 2016-03-16 | 华北电力大学（保定） | Device and method for simultaneous generation and enhancement of bidirectional stimulated scattering by horizontal guide rail pumping |
| CN105511198A (en) * | 2015-12-18 | 2016-04-20 | 华北电力大学（保定） | Forward-backward scattering compatible device and method |
| CN105511198B (en) * | 2015-12-18 | 2018-06-19 | 华北电力大学（保定） | A kind of preceding back scattering compatibility scattering device and method |
| CN105404069B (en) * | 2015-12-18 | 2019-03-29 | 华北电力大学（保定） | Enhancement device and method occur simultaneously for a kind of two-way stimulated scattering of horizontal guide rail pumping |
| CN105404070B (en) * | 2015-12-18 | 2019-03-29 | 华北电力大学（保定） | Enhancement device and method occur simultaneously for a kind of two-way stimulated scattering of upright guide rail pumping |
| CN109946267A (en) * | 2019-04-18 | 2019-06-28 | 南昌航空大学 | Gas Rayleigh-Brillouin spectral lines measuring device and method |
| CN109946267B (en) * | 2019-04-18 | 2022-02-25 | 南昌航空大学 | Device and method for measuring gas Rayleigh-Brillouin scattering spectral line |
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| CN103149769B (en) | 2015-08-19 |
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