CN105529612A - Cross stimulated scattering enhancement device and method - Google Patents
Cross stimulated scattering enhancement device and method Download PDFInfo
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- CN105529612A CN105529612A CN201510779284.3A CN201510779284A CN105529612A CN 105529612 A CN105529612 A CN 105529612A CN 201510779284 A CN201510779284 A CN 201510779284A CN 105529612 A CN105529612 A CN 105529612A
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Abstract
The invention discloses a method for carrying out stimulated scattering enhancement by a cross stimulated scattering enhancement device. A first total reflection mirror (6) an a second total reflection mirror (7) and/or a dichroic mirror (3) reflect residual exciting light to a stimulated scattering medium (5) in a form of being in the same light path and direction as a signal light or in the reverse direction.
Description
Technical field
The present invention relates to stimulated scattering, particularly relate to a kind of device improving excited Brillouin or stimulated Raman scattering light intensity, belong to photoelectron technical field.
Background technology
Excited Brillouin and stimulated Raman scattering belong to very important scattering phenomenon in the middle of nonlinear scattering, research about excited Brillouin and stimulated Raman scattering in prior art is a lot, wherein all need generation and the observation that could realize excited Brillouin and stimulated Raman scattering by specific device and light path design, excited Brillouin and the stimulated Raman scattering device of prior art are generally divided into two kinds in the design of light path, one is flashlight and exciting light same light path, another is that exciting light and pump light exist intersecting angle, for excited Brillouin and the stimulated Raman scattering of these two kinds of forms, for the first situation, if carry out excited Brillouin and stimulated Raman scattering in liquid or gas medium, then need the container placing excited Brillouin and stimulated Raman scattering medium specially, light path design is carried out in outside, flashlight and exciting light same light path in the middle of medium is propagated, or just squeeze into exciting light in media as well, utilize spontaneous Brillouin scattering as flashlight, and for fiber medium, because the transmission of light in optical fiber is all strictly be limited in inside of optical fibre, so light path must be same light path, for excited Brillouin and the stimulated Raman scattering of same light path, cell therefor is generally rectangle or the square of transparent cylindrical shape or rule, only need when carrying out excited Brillouin and stimulated Raman scattering experiment at the same light path order incident generation laser of flashlight and the laser for amplifying, flashlight and exciting light are existed to excited Brillouin and the stimulated Raman scattering of angle, then cell therefor needs specialization to design, such as in order to minimized smooth reflection loss, the intersecting angle of inhibit signal light and exciting light is needed to be 90 degree, but, no matter for which kind of situation, exciting light is all once by excited Brillouin and stimulated Raman scattering medium, in fact, when exciting light is once by after medium, the part that its energy is transformed into flashlight is just seldom a part of, major part exciting light has just slatterned after passage, such result is exactly that the flashlight of excited Brillouin can not be greatly enhanced, and cause the significant wastage of the energy.
The present invention puts forward for the problems referred to above, and little to solve excited Brillouin and stimulated Raman scattering light intensity in prior art, exciting light wastes serious problem.
Summary of the invention
The invention provides a kind of stimulated scattering intensifier that intersects, this device comprises: exciting light light source (1), shaping lens (2), stimulated scattering medium (5), first completely reflecting mirror (6), flashlight light source (8), second completely reflecting mirror (7) and/or dichroscope (3), it is characterized in that: their pass that arranges is: exciting light light source (1), shaping lens (2), SBS medi um (5) and the first completely reflecting mirror (6) set gradually along light path order, the flashlight that flashlight light source (8) sends enters stimulated scattering medium (5), crossing with non-zero angle with exciting light in stimulated scattering medium (5), reflexed to the second completely reflecting mirror (7) and/or dichroscope (3) from the exciting light of SBS medi um (5) transmission by the first completely reflecting mirror (6), then reflexed in stimulated scattering medium (5) with or reciprocal form equidirectional with flashlight same light path by the second completely reflecting mirror (7) and/or dichroscope (3).
According to one embodiment of the invention, described stimulated scattering is stimulated Raman scattering.
According to one embodiment of the invention, described stimulated scattering is stimulated Brillouin scattering.
According to one embodiment of the invention, provide a kind of method utilizing above-mentioned enhancing stimulated scattering, remaining exciting light reflexes in stimulated scattering medium (5) with or reciprocal form equidirectional with flashlight same light path with the second completely reflecting mirror (7) and/or dichroscope (3) by the first completely reflecting mirror (6).
According to one embodiment of the invention, in described method stimulated scattering be stimulated Raman scattering.
According to one embodiment of the invention, the stimulated scattering in described method is stimulated Brillouin scattering.
According to one embodiment of the invention, in described method, remaining exciting light reflexes in stimulated scattering medium (5) with or reciprocal form equidirectional with flashlight same light path with the second completely reflecting mirror (7) and dichroscope (3) by the first completely reflecting mirror (6).
According to one embodiment of the invention, in described method, the first completely reflecting mirror (6) and the second completely reflecting mirror (7) by remaining exciting light to reflex in stimulated scattering medium (5) with the reciprocal form of flashlight same light path.
According to one embodiment of the invention, in described method, the first completely reflecting mirror (6) and dichroscope (3) by remaining exciting light to reflex in stimulated scattering medium (5) with the reciprocal form of flashlight same light path.
According to one embodiment of the invention, in described method, also comprise and use detector and/or semi-transparent semi-reflecting lens to detect stimulated scattering light.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of the stimulated Brillouin scattering intensifier of embodiments of the invention one;
Accompanying drawing 2 is schematic diagrames of the stimulated Raman scattering intensifier of embodiments of the invention two;
Accompanying drawing 3 is schematic diagrames of the stimulated Brillouin scattering intensifier of embodiments of the invention three;
Accompanying drawing 4 is schematic diagrames of the stimulated Raman scattering intensifier of embodiments of the invention four.
In above-mentioned accompanying drawing, 1 represents exciting light light source, 2 shaping lens, and 3 represent dichroscope, and 5 represent excited Brillouin and stimulated Raman scattering medium, and 6-7 represents completely reflecting mirror, and 9 represent semi-transparent semi-reflecting lens, and 10 represent detector, and 8 represent flashlight light source.
Embodiment
Before the detailed explanation carrying out the specific embodiment of the invention, the generation direction of we first clear and definite stimulated Brillouin scattering once and stimulated Raman scattering, stimulated Brillouin scattering belongs to back scattering, and stimulated Raman scattering is then forward scattering.
When describing them and direction occurring, below by by reference to the accompanying drawings 1 basis on describe embodiments of the invention one in detail, in this embodiment, wherein flashlight is crossing with non-zero angle in SBS medi um 5 inside with exciting light, this device comprises: exciting light light source 1, shaping lens 2, dichroscope 3, SBS medi um 5, completely reflecting mirror 6-7, detector 10, flashlight light source 8, semi-transparent reflection mirror 9, their pass that arranges is: exciting light light source 1, shaping lens 2, SBS medi um 5 and completely reflecting mirror 6 set gradually along light path order, the flashlight that flashlight light source 8 sends enters SBS medi um 5 sequentially through semi-transparent semi-reflecting lens 9 and dichroscope 3, crossing with non-zero angle with exciting light in SBS medi um, being totally reflected mirror 6 from the exciting light of SBS medi um 5 transmission reflexes to completely reflecting mirror 7, then being totally reflected mirror 7 reflexes on dichroscope 3, dichroscope 3 reflects for exciting light for flashlight transmission, incide exciting light on dichroscope 3 by dichroscope 3 to reflex in SBS medi um 5 with the form of flashlight same light path, and backward stimulated Brillouin scattering light incides on semi-transparent semi-reflecting lens 9 through dichroscope 3, reflexed on detector 10 by semi-transparent semi-reflecting lens 9.
Below in conjunction with accompanying drawing 2 embodiments of the invention two, in this embodiment, flashlight is crossing with non-zero angle in stimulated Raman scattering medium 5 with exciting light, this device comprises: exciting light light source 1, shaping lens 2, dichroscope 3, stimulated Raman scattering medium 5, completely reflecting mirror 6-7, detector 10, flashlight light source 8, their pass that arranges is: exciting light light source 1, shaping lens 2, stimulated Raman scattering medium 5 and completely reflecting mirror 6 set gradually along light path order, the flashlight that flashlight light source 8 sends enters stimulated Raman scattering medium 5 sequentially through dichroscope 3, crossing with non-zero angle with exciting light in stimulated Raman scattering medium, being totally reflected mirror 6 from the exciting light of stimulated Raman scattering medium 5 transmission reflexes to completely reflecting mirror 7, then being totally reflected mirror 7 reflexes on dichroscope 3, dichroscope 3 reflects for exciting light for flashlight transmission, incide exciting light on dichroscope 3 by dichroscope 3 to reflex in stimulated Raman scattering medium 5 with the form of flashlight same light path, and the stimulated Raman scattering light of forward direction is being directly incident on detector 10 through after stimulated Raman scattering medium.
Below in conjunction with accompanying drawing 3, embodiments of the invention three are described, in this embodiment, wherein flashlight is crossing with non-zero angle in SBS medi um 5 inside with exciting light, this device comprises: exciting light light source 1, shaping lens 2, SBS medi um 5, completely reflecting mirror 6-7, detector 10, flashlight light source 8, semi-transparent reflection mirror 9, their pass that arranges is: exciting light light source 1, shaping lens 2, SBS medi um 5 and completely reflecting mirror 6 set gradually along light path order, the flashlight that flashlight light source 8 sends enters SBS medi um 5 sequentially through semi-transparent semi-reflecting lens 9, crossing with non-zero angle with exciting light in SBS medi um, being totally reflected mirror 6 from the exciting light of SBS medi um 5 transmission reflexes to completely reflecting mirror 7, then mirror 7 is totally reflected with flashlight same light path but the contrary form in the direction of propagation reflexes in SBS medi um 5, and backward stimulated Brillouin scattering light incides on semi-transparent semi-reflecting lens 9, reflexed on detector 10 by semi-transparent semi-reflecting lens 9.
Below in conjunction with accompanying drawing 4, the fourth embodiment of the present invention is described, in this embodiment, flashlight is crossing with non-zero angle in stimulated Raman scattering medium 5 with exciting light, this device comprises: exciting light light source 1, shaping lens 2, dichroscope 3, stimulated Raman scattering medium 5, completely reflecting mirror 6, detector 10, flashlight light source 8, their pass that arranges is: exciting light light source 1, shaping lens 2, stimulated Raman scattering medium 5 and completely reflecting mirror 6 set gradually along light path order, the flashlight that flashlight light source 8 sends directly enters stimulated Raman scattering medium 5, crossing with non-zero angle with exciting light in stimulated Raman scattering medium, being totally reflected mirror 6 from the exciting light of stimulated Raman scattering medium 5 transmission reflexes to dichroscope 3, but then reflexed in stimulated Raman scattering medium 5 by dichroscope 3 with the form contrary with the flashlight same light path direction of propagation, and the stimulated Raman scattering light of forward direction is being directly incident on detector 10 through after dichroscope, wherein dichroscope 3 reflects for exciting light for flashlight transmission.
Under regard to the operation principle of above-described embodiment and process is described in detail, because the generation of excited Brillouin and stimulated Raman scattering and detection belong to technology known in the field, so be no longer described in detail for this part, described belowly focus in the light path of exciting light, for embodiment one, when exciting light and flashlight are crossing first in media as well, exciting light amplifies flashlight, remaining exciting light then incides on dichroscope 3 via completely reflecting mirror 6 and 7, due to dichroscope 3 for exciting light be reflection, and be reflect with the form of flashlight same light path, Here it is makes remaining exciting light be coaxially carry out interactional with flashlight in incident excited Brillouin and stimulated Raman scattering medium again, this mode not only makes remaining exciting light again be fully used, and change the mode of anterior cruciate when again utilizing, but become coaxial mode, obviously, it is larger that coaxial mode intersects area, action time is longer, thus make exciting light obtain utilizing very fully.
For embodiment two, its principle and embodiment one similar, the stimulated Raman scattering of what difference was only to occur herein is forward direction, so detector 10 directly can receive the stimulated Raman scattering of forward direction.
For embodiment three, but remaining exciting light incides in stimulated scattering medium by speculum 6 and speculum 7 with the form contrary with the flashlight same light path direction of propagation, this mode eliminates dichroscope, simpler in structure, simultaneously owing to being backward Brillouin scattering, so relative to embodiment one, the receiving position of detector does not change.Similar with embodiment one, remaining exciting light is made to be coaxially carry out interactional with flashlight in incident excited Brillouin and stimulated Raman scattering medium again, this mode not only makes remaining exciting light again be fully used, and change the mode of anterior cruciate when again utilizing, but become coaxial mode, obviously, it is larger that coaxial mode intersects area, action time is longer, thus makes exciting light obtain utilizing very fully.
For embodiment four, its principle and embodiment three are consistent substantially, difference is only that this embodiment is stimulated Raman scattering, so use dichroscope 3 instead of the completely reflecting mirror 7 in embodiment three, to make the stimulated Raman scattering flashlight of propagated forward incide on detector 10, obviously, to intersect area larger for this coaxial mode, action time is longer, thus makes exciting light obtain utilizing very fully.
Four above-mentioned embodiments describe stimulated scattering intensifier of the present invention with different scatterings and structural form respectively; no matter which kind of form all makes exciting light obtain making full use of again in the mode coaxially crossing with flashlight; above-mentioned specification carries out on basis in conjunction with specific embodiments; but it is to be appreciated that; above-described embodiment is not the restriction for scope, and the predictable distortion of any those skilled in the art is all in protection scope of the present invention.
Claims (10)
1. an intersection stimulated scattering intensifier, this device comprises: exciting light light source (1), shaping lens (2), stimulated scattering medium (5), first completely reflecting mirror (6), flashlight light source (8), second completely reflecting mirror (7) and/or dichroscope (3), it is characterized in that: their pass that arranges is: exciting light light source (1), shaping lens (2), SBS medi um (5) and the first completely reflecting mirror (6) set gradually along light path order, the flashlight that flashlight light source (8) sends enters stimulated scattering medium (5), crossing with non-zero angle with exciting light in stimulated scattering medium (5), reflexed to the second completely reflecting mirror (7) and/or dichroscope (3) from the exciting light of SBS medi um (5) transmission by the first completely reflecting mirror (6), then reflexed in stimulated scattering medium (5) with or reciprocal form equidirectional with flashlight same light path by the second completely reflecting mirror (7) and/or dichroscope (3).
2. intersection stimulated scattering intensifier according to claim 1, is characterized in that: described stimulated scattering is stimulated Raman scattering.
3. intersect stimulated scattering intensifier according to claim 1, it is characterized in that: described stimulated scattering is stimulated Brillouin scattering.
4. utilize intersection stimulated scattering intensifier arbitrary in claim 1-3 to carry out a method for stimulated scattering enhancing, it is characterized in that: remaining exciting light reflexes in stimulated scattering medium (5) with or reciprocal form equidirectional with flashlight same light path with the second completely reflecting mirror (7) and/or dichroscope (3) by the first completely reflecting mirror (6).
5. method according to claim 4, is characterized in that: described stimulated scattering is stimulated Raman scattering.
6. method according to claim 4, is characterized in that: described stimulated scattering is stimulated Brillouin scattering.
7. method according to claim 4, is characterized in that: remaining exciting light reflexes in stimulated scattering medium (5) with or reciprocal form equidirectional with flashlight same light path with the second completely reflecting mirror (7) and dichroscope (3) by the first completely reflecting mirror (6).
8. method according to claim 4, is characterized in that: the first completely reflecting mirror (6) and the second completely reflecting mirror (7) by remaining exciting light to reflex in stimulated scattering medium (5) with the reciprocal form of flashlight same light path.
9. method according to claim 4, is characterized in that: the first completely reflecting mirror (6) and dichroscope (3) by remaining exciting light to reflex in stimulated scattering medium (5) with the reciprocal form of flashlight same light path.
10. method according to claim 4, also comprises and uses detector and/or semi-transparent semi-reflecting lens to detect stimulated scattering light.
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| CN201510779284.3A CN105529612B (en) | 2015-11-13 | 2015-11-13 | Cross stimulated scattering enhancement device and method |
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| CN201510779284.3A CN105529612B (en) | 2015-11-13 | 2015-11-13 | Cross stimulated scattering enhancement device and method |
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| CN105529612A true CN105529612A (en) | 2016-04-27 |
| CN105529612B CN105529612B (en) | 2020-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406348A (en) * | 2015-12-10 | 2016-03-16 | 华北电力大学（保定） | Universal stimulated Brillouin scattering enhancement device |
Citations (4)
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|---|---|---|---|---|
| EP0499262A2 (en) * | 1991-02-15 | 1992-08-19 | Hughes Aircraft Company | Multiple focus backward Raman laser apparatus |
| CN103855602A (en) * | 2012-12-03 | 2014-06-11 | 中国科学院大连化学物理研究所 | Gas stimulated Raman amplifier with Raman seed light |
| CN104267558A (en) * | 2014-10-24 | 2015-01-07 | 哈尔滨工业大学 | Stimulated Brillouin scattering based non-collinear double-pass amplification method and non-collinear double-pass beam combination device |
| CN205355525U (en) * | 2015-11-13 | 2016-06-29 | 华北电力大学（保定） | Intersection stimulated scattering reinforcing means |
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2015
- 2015-11-13 CN CN201510779284.3A patent/CN105529612B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0499262A2 (en) * | 1991-02-15 | 1992-08-19 | Hughes Aircraft Company | Multiple focus backward Raman laser apparatus |
| CN103855602A (en) * | 2012-12-03 | 2014-06-11 | 中国科学院大连化学物理研究所 | Gas stimulated Raman amplifier with Raman seed light |
| CN104267558A (en) * | 2014-10-24 | 2015-01-07 | 哈尔滨工业大学 | Stimulated Brillouin scattering based non-collinear double-pass amplification method and non-collinear double-pass beam combination device |
| CN205355525U (en) * | 2015-11-13 | 2016-06-29 | 华北电力大学（保定） | Intersection stimulated scattering reinforcing means |
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| 王雨雷 等: "基于布里渊放大的非共线四束激光串行组束的研究", 《物理学报》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406348A (en) * | 2015-12-10 | 2016-03-16 | 华北电力大学（保定） | Universal stimulated Brillouin scattering enhancement device |
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