CN105511198A - Forward-backward scattering compatible device and method - Google Patents
Forward-backward scattering compatible device and method Download PDFInfo
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- CN105511198A CN105511198A CN201510968090.8A CN201510968090A CN105511198A CN 105511198 A CN105511198 A CN 105511198A CN 201510968090 A CN201510968090 A CN 201510968090A CN 105511198 A CN105511198 A CN 105511198A
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- oval
- pump light
- upright guide
- guide rail
- scattering
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/353—Frequency conversion, i.e. wherein a light beam is generated with frequency components different from those of the incident light beams
- G02F1/3536—Four-wave interaction
- G02F1/3538—Four-wave interaction for optical phase conjugation
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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A forward-backward stimulated scattering compatible device is characterized in that a signal light source (1), a first dichroscope (2), a first forward-backward scattering signal light semi-transparent semi-reflective mirror (5), an elliptic scattering medium container (10), a second forward-backward scattering signal light semi-transparent semi-reflective mirror (4), a second dichroscope (2) and a forward scattering signal light detector (11) which are sequentially arranged along a light path are included, wherein a backward scattering signal light detector (3) is arranged in the reflecting direction of the first dichroscope (2); the device further comprises first and second vertical guide rails (7) arranged at the positions adjacent to the elliptic scattering medium container, the first and second vertical guide rails (7) are arranged at the left side and the right side of the elliptic scattering medium container respectively and provided with the signal light source (1) and a pumping light source (6) respectively, the signal light source (1) and the pumping light source (6) can vertically move along the vertical guide rails, and the pitch angles of the signal light source (1) and the pumping light source (6) can be arbitrarily adjusted.
Description
Technical field
The present invention relates to a kind of scattering container and utilize this container to carry out the method for scattering, belonging to optical technical field.
Background technology
Stimulated scattering of the prior art generally comprises forward scattering and back scattering two kinds, wherein devise different optical designs for often kind of scattering, to carry out the reception and the analysis that strengthen stimulated scattering signal, but, many times we need the scatterometry simultaneously carrying out former and later two directions, effectively to analyze experimental data, now, in order to complete such work, just need to carry out twice experiment respectively, design two different light paths, cause time cost increase very large, and, for the forward scattering carried out separately and back scattering, the defect all had respectively mainly concentrates on 2, first is when pumping light intensity is not large especially, the stimulated scattering flashlight produced is abnormal little, now just need to use highly sensitive instrument to carry out and be excited the analysis of flashlight, such as ICCD, this instrument price is expensive, and operating environment requires higher, if think the signal analysis instrument that use cost is low, so just need to use powerful laser instrument, but powerful laser instrument cost is higher, second point is that the intersecting angle of pump light and flashlight can not adjust, and has to regulate in prior art, the present invention proposes a kind of device of front back scattering compatibility, also namely both can carry out forward scattering, also can carry out back scattering.
Summary of the invention
According to one embodiment of the invention, provide a kind of front stimulated scattering compatible apparatus, it is characterized in that: comprise the signal optical source (1) set gradually along light path, first dichroic mirror (2), the semi-transparent semi-reflecting lens (5) of backscatter signal light before first, oval scattering medium container (10), the semi-transparent semi-reflecting lens (4) of the second Forward scattering signal light, second dichroic mirror (2), and Forward scattering signal photo-detector (11), wherein the reflection direction of the first dichroic mirror (2) is provided with backscatter signal photo-detector (3), also be included in the first and second upright guide rails (7) that the position of contiguous oval scattering medium container is arranged, first and second upright guide rails (7) are separately positioned on the left and right sides of oval scattering medium container, it is respectively arranged with can along the upright guide rail vertically signal optical source (1) of movement and pump light source (6), the angle of pitch of described signal optical source (1) and pump light source (6) can regulate arbitrarily.
According to one embodiment of the invention, described signal optical source and described pump light source are laser instrument, and both light has coherence.
According to one embodiment of the invention, the whole transmission of flashlight that described first semi-transparent semi-reflecting lens (5) sends signal optical source (1), all semi-transparent semi-reflecting for front backscatter signal light, meanwhile, the flashlight that the second semi-transparent semi-reflecting lens (4) sends for signal optical source (1) also has total reflection effect.
According to one embodiment of the invention, the vertical direction of described upright guide rail (7) is perpendicular to the line of two focuses of oval scattering medium container, and upright guide rail is positioned at the side of oval scattering medium container.
According to one embodiment of the invention, described oval scattering medium container is all coated with reflection horizon on top layer except the entrance of pump light incident area and flashlight, the size not being coated with region, reflection horizon wherein for pump light incidence can ensure that pump light all can be incided oval scattering medium internal tank and pass oval focus by signal optical source (1) and pump light source (6) in the mobile range of upright guide rail (7), the extreme higher position that wherein signal optical source (1) and pump light source (6) move up on upright guide rail is the position contour with oval two focus lines.
According to one embodiment of the invention, provide a kind of method of carrying out two-way stimulated scattering, it is characterized in that: when signal optical source (1) does not move to highest position along upright guide rail, described device carries out stimulated scattering, when signal optical source (1) moves to highest position along upright guide rail, described device carries out front back scattering simultaneously.
According to one embodiment of the invention, described signal optical source and described pump light source are laser instrument, and both light has coherence.
According to one embodiment of the invention, when pump light source moves to extreme higher position along upright guide rail, front and back are maximum to scattered light intensity.
According to one embodiment of the invention, the vertical direction of described upright guide rail (7) is perpendicular to the line of two focuses of oval scattering medium container, and upright guide rail is positioned at the side of oval scattering medium container.
According to one embodiment of the invention, described oval scattering medium container is all coated with reflection horizon on top layer except the entrance of pump light incident area and flashlight, the size not being coated with region, reflection horizon wherein for pump light incidence can ensure that pump light all can be incided oval scattering medium internal tank and pass oval focus by signal optical source (1) and pump light source (6) in the mobile range of upright guide rail (7), the extreme higher position that wherein signal optical source (1) and pump light source (6) move up on upright guide rail is the position contour with oval two focus lines.
Accompanying drawing explanation
Accompanying drawing 1 is the device schematic diagram that two-way dispersion of the present invention occurs to strengthen simultaneously;
Figure 2 illustrate structure when front back scattering occurs simultaneously for device that two-way dispersion of the present invention occurs to strengthen simultaneously.
Wherein 1 represents signal optical source, and 2 represent dichroic mirror, and 3 and 11 represent photo-detector, the semi-transparent semi-reflecting lens of 4 and 5 expression Forward scattering signal light and backscatter signal light, 6 represent pump light sources, and 7 represent upright guide rails, 8 and 9 represent oval focus, and 10 represent oval scattering medium container.
Embodiment
Front back scattering compatible apparatus of the present invention and method will be described in detail below on basis by reference to the accompanying drawings.
The schematic diagram of front back scattering compatible apparatus of the present invention as shown in Figure 1, this device comprises signal optical source 1, first dichroic mirror 2, the semi-transparent semi-reflecting lens 5 of the first forward-backward algorithm scattered signal light, oval scattering medium container 10, the semi-transparent semi-reflecting lens 4 of the second forward-backward algorithm scattered signal light, second dichroic mirror 2, and Forward scattering signal photo-detector 11, wherein the reflection direction of the first and second dichroic mirrors arranges detector 3 and 11 respectively, what be also included in contiguous oval scattering medium container is positioned at the first upright guide rail 7 and the second upright guide rail 7 that position, the left and right sides is arranged, two upright guide rails 7 are respectively arranged with can along the upright guide rail vertically pump light source 6 of movement and signal optical source 1.
Wherein signal optical source 1 and pump light source 6 are respectively LASER Light Source, and two LASER Light Source have certain coherence, for reaching both coherences, same sub-light source can be used to be respectively above-mentioned two LASER Light Source and provide seed source.Generally, the power of pump light source and energy are greater than the power of signal optical source, and the bandwidth of two light sources can make suitable selection according to selected medium, this belongs to known technology in stimulated scattering, does not repeat at this.Flashlight and stimulated scattering light can be distinguished by the first dichroic mirror 2, it allows flashlight by entering oval scattering medium container 10, and backscatter signal light is reflexed to backscatter signal photo-detector 3, pump light and forward scattering light can be distinguished by the second dichroic mirror 2, it allows pump light to enter oval scattering medium container, and Forward scattering signal light is reflexed on forward scattering photo-detector 11, before first and second, backscatter signal light semi-transparent semi-reflecting lens 4 and 5 is respectively used to backscatter signal light before making and in media Containers, forms certain vibration thus further acquisition enhancing effect.The wherein whole transmission of flashlight that sends of semi-transparent semi-reflecting lens 5 pairs of signal optical sources 1, for Forward scattering signal and backscatter signal light all semi-transparent semi-reflecting, simultaneously, second semi-transparent semi-reflecting lens 4 is for the whole transmission of pump light, for initial flashlight, also there is total reflection effect simultaneously, for incided by the flashlight of dichroic mirror 2 transmission and pump light oval scattering medium container 10 inside and through the first and second focuses 8,9 of oval scattering medium container 10.Forward-scattering signal detector is for receiving Forward scattering signal light.The vertical direction of two upright guide rails 7 is perpendicular to the line of oval scattering medium container two focuses, two upright guide rails lay respectively at left side and the right side of oval scattering medium container, oval scattering medium container 10 is all coated with reflection horizon on top layer except the incident area position of pump light incident area and flashlight, size wherein for flashlight and region, Wei Tu reflection horizon, pump light entrance port can ensure that flashlight and pump light all can be incided oval scattering medium internal tank and pass oval focus by signal optical source 1 and pump light source 6 in the mobile range of upright guide rail 7, for ensureing the realization of this point, the angle of pitch being in signal optical source 1 on upright guide rail 7 and pump light source 6 is adjustable, also namely no matter signal optical source 1 and pump light source 6 move to any position on upright guide rail, all can realize flashlight and pump light by the adjustment of its angle of pitch to enter to inject after oval scattering medium container all by the focus of ellipse, the extreme higher position that wherein signal optical source 1 and pump light source 6 move up on upright guide rail is the position contour with oval two focus lines.
Below the method for front back scattering compatibility of the present invention is described.As shown in Figure 1, when signal optical source does not move to extreme higher position on upright guide rail, this device can only carry out stimulated scattering, as shown in Figure 2, when this signal optical source moves to highest position along upright guide rail, this device can carry out front back scattering simultaneously, and when pumping source moves to highest position along upright guide rail, its front backscatter signal intensity is maximum.
Now by reference to the accompanying drawings 1 basis on illustrate that this device carries out the process of stimulated scattering, the flashlight sent by signal optical source 1 is by inner successively by a focus of oval scattering medium container by entering oval scattering medium container 10 after semi-transparent semi-reflecting lens 5 after dichroic mirror 2, again another one focus is passed through afterwards by after the reflective layer reflects of oval scattering medium container, based on similar process, pump light enters in oval scattering medium container by semi-transparent semi-reflecting lens 4, can angle between conditioning signal light beam and pump beam by height on upright guide rail of conditioning signal light source and pump light source and the angle of pitch.Backward stimulated scattering light is reflexed on detector 3 by dichroic mirror 5.
When needs carry out front back scattering simultaneously, signal optical source is elevated to extreme higher position along upright guide rail, as shown in Figure 2, the light that signal optical source sends is linearly by two oval focuses, now by regulating the height of pump light source on upright guide rail and the intersecting angle of the angle of pitch and adjustable two light beams, in adjustment process, remain that pump beam passes the focus of oval scattering medium container.In order to obtain the strongest light signal, pump light source can be risen to the extreme higher position on upright guide rail.
Now, the front backscatter signal occurred has detector 3 and 11 to receive respectively respectively.
Be more than illustrating for this invention, but can not limitation of the present invention be interpreted as.The distortion of those skilled in the art's precognition is all in protection scope of the present invention.
Claims (10)
1. stimulated scattering compatible apparatus before a kind, it is characterized in that: comprise the signal optical source (1) set gradually along light path, first dichroic mirror (2), the semi-transparent semi-reflecting lens (5) of backscatter signal light before first, oval scattering medium container (10), the semi-transparent semi-reflecting lens (4) of the second Forward scattering signal light, second dichroic mirror (2), and Forward scattering signal photo-detector (11), wherein the reflection direction of the first dichroic mirror (2) is provided with backscatter signal photo-detector (3), also be included in the first and second upright guide rails (7) that the position of contiguous oval scattering medium container is arranged, first and second upright guide rails (7) are separately positioned on the left and right sides of oval scattering medium container, it is respectively arranged with can along the upright guide rail vertically signal optical source (1) of movement and pump light source (6), the angle of pitch of described signal optical source (1) and pump light source (6) can regulate arbitrarily.
2. intensifier according to claim 1, is characterized in that: described signal optical source and described pump light source are laser instrument, and both light has coherence.
3. intensifier according to claim 1, it is characterized in that: the whole transmission of flashlight that described first semi-transparent semi-reflecting lens (5) sends signal optical source (1), all semi-transparent semi-reflecting for front backscatter signal light, meanwhile, the flashlight that the second semi-transparent semi-reflecting lens (4) sends for signal optical source (1) also has total reflection effect.
4. intensifier according to claim 1, is characterized in that: the vertical direction of described upright guide rail (7) is perpendicular to the line of two focuses of oval scattering medium container, and upright guide rail is positioned at the side of oval scattering medium container.
5. intensifier according to claim 1, it is characterized in that: described oval scattering medium container is all coated with reflection horizon on top layer except the entrance of pump light incident area and flashlight, the size not being coated with region, reflection horizon wherein for pump light incidence can ensure that pump light all can be incided oval scattering medium internal tank and pass oval focus by signal optical source (1) and pump light source (6) in the mobile range of upright guide rail (7), the extreme higher position that wherein signal optical source (1) and pump light source (6) move up on upright guide rail is the position contour with oval two focus lines.
6. the method utilizing the device of claim 1 to carry out two-way stimulated scattering, it is characterized in that: when signal optical source (1) does not move to highest position along upright guide rail, described device carries out stimulated scattering, when signal optical source (1) moves to highest position along upright guide rail, described device carries out front back scattering simultaneously.
7. method according to claim 6, is characterized in that: described signal optical source and described pump light source are laser instrument, and both light has coherence.
8. method according to claim 6, is characterized in that: when pump light source moves to extreme higher position along upright guide rail, front and back are maximum to scattered light intensity.
9. method according to claim 6, is characterized in that: the vertical direction of described upright guide rail (7) is perpendicular to the line of two focuses of oval scattering medium container, and upright guide rail is positioned at the side of oval scattering medium container.
10. method according to claim 6, it is characterized in that: described oval scattering medium container is all coated with reflection horizon on top layer except the entrance of pump light incident area and flashlight, the size not being coated with region, reflection horizon wherein for pump light incidence can ensure that pump light all can be incided oval scattering medium internal tank and pass oval focus by signal optical source (1) and pump light source (6) in the mobile range of upright guide rail (7), the extreme higher position that wherein signal optical source (1) and pump light source (6) move up on upright guide rail is the position contour with oval two focus lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510968090.8A CN105511198B (en) | 2015-12-18 | 2015-12-18 | A kind of preceding back scattering compatibility scattering device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510968090.8A CN105511198B (en) | 2015-12-18 | 2015-12-18 | A kind of preceding back scattering compatibility scattering device and method |
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| Publication Number | Publication Date |
|---|---|
| CN105511198A true CN105511198A (en) | 2016-04-20 |
| CN105511198B CN105511198B (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510968090.8A Expired - Fee Related CN105511198B (en) | 2015-12-18 | 2015-12-18 | A kind of preceding back scattering compatibility scattering device and method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4159178A (en) * | 1976-11-24 | 1979-06-26 | University Of Utah Research Institute | Stimulated brillouin scattering ring laser gyroscope |
| CN101738816A (en) * | 2009-12-31 | 2010-06-16 | 哈尔滨工业大学 | Stimulated Brillouin scattering phase conjugate mirror with rotating wedge-shaped plate |
| WO2012027542A2 (en) * | 2010-08-25 | 2012-03-01 | California Institute Of Technology | Simultaneous orthogonal light sheet microscopy and computed optical tomography |
| CN103149769A (en) * | 2013-01-18 | 2013-06-12 | 华北电力大学（保定） | Brillouin scattering device |
| CN205539858U (en) * | 2015-12-18 | 2016-08-31 | 华北电力大学（保定） | Compatible scattering device of preceding back scattering |
-
2015
- 2015-12-18 CN CN201510968090.8A patent/CN105511198B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4159178A (en) * | 1976-11-24 | 1979-06-26 | University Of Utah Research Institute | Stimulated brillouin scattering ring laser gyroscope |
| CN101738816A (en) * | 2009-12-31 | 2010-06-16 | 哈尔滨工业大学 | Stimulated Brillouin scattering phase conjugate mirror with rotating wedge-shaped plate |
| WO2012027542A2 (en) * | 2010-08-25 | 2012-03-01 | California Institute Of Technology | Simultaneous orthogonal light sheet microscopy and computed optical tomography |
| CN103149769A (en) * | 2013-01-18 | 2013-06-12 | 华北电力大学（保定） | Brillouin scattering device |
| CN205539858U (en) * | 2015-12-18 | 2016-08-31 | 华北电力大学（保定） | Compatible scattering device of preceding back scattering |
Non-Patent Citations (2)
| Title |
|---|
| AYDIN YENIAY等: "Spontaneous and Stimulated Brillouin Scattering Gain Spectra in Optical Fibers", 《JOURNAL OF LIGHTWAVE TECHNOLOGY》 * |
| DAVID D. SMITH等: "Coupled-resonator-induced transparency", 《PHYSICAL REVIEW A》 * |
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| CN105511198B (en) | 2018-06-19 |
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