CN103744190A - Forward scattering and backward scattering compatible device based on pulse laser beams - Google Patents
Forward scattering and backward scattering compatible device based on pulse laser beams Download PDFInfo
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- CN103744190A CN103744190A CN201410026016.XA CN201410026016A CN103744190A CN 103744190 A CN103744190 A CN 103744190A CN 201410026016 A CN201410026016 A CN 201410026016A CN 103744190 A CN103744190 A CN 103744190A
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Abstract
The invention discloses a forward scattering and backward scattering compatible device based on pulse laser beams. The device is characterized in that forward scattering and backward scattering can be realized simultaneously, or single forward scattering or single backward scattering is realized optionally.
Description
Technical field
The present invention relates to a kind of light scattering experimental provision, belong to photoelectron technology field.
Background technology
In optical scattering, include three kinds of forward scatterings, back scattering, and lateral scattering, the current teaching and scientific research device for light scattering, every kind of device can only carry out a kind of scattering of form, can only carry out forward scattering, can only carry out back scattering, the existence of this device has caused a lot of funds and waste of time, for example, when purchasing scientific research or teaching equipment, need to respectively purchase a set of for forward scattering and back scattering, if the use of learning for student experimenting, may need to purchase respectively tens to up to a hundred, if oneself purchases part school, the words of teacher or student oneself assembling experimental provision, need to assemble different experimental provisions for different direction scatterings, expend time in very much, and many times, often need student to observe two kinds of scatterings of forward and backward simultaneously, this contrast can be more vivid and concrete, be convenient to student's understanding and grasp, but existing device obviously cannot meet this demand.
Summary of the invention
The present invention proposes for addressing the above problem, and a kind of forward scattering and back scattering compatible apparatus based on pulse laser beam is provided, and well solves existing problem in prior art.
According to one embodiment of the invention, a kind of forward scattering and back scattering compatible apparatus based on pulse laser beam is provided, it is characterized in that: this device can be realized forward scattering and back scattering simultaneously, or selectablely realize single forward scattering or single back scattering.
According to one embodiment of the invention, this device comprises: the pulsed laser (1) of polarization light output, the first scattering medium (2), the second scattering medium (3), the 3rd scattering medium (4), beam splitter (5), the first polarizing beam splitter mirror (6), the second polarizing beam splitter mirror (7), the 3rd polarizing beam splitter mirror (10), the 4th polarizing beam splitter mirror (11), the first completely reflecting mirror (14), the second completely reflecting mirror (15), the first quarter-wave plate (8), the second quarter-wave plate (13), the 3rd quarter-wave plate (16), the 4th quarter-wave plate (17), aperture (12), polarization rotation device (9), controller (18) and optical delay device (19), the linearly polarized laser bundle that described laser instrument (1) sends pulse incides on beam splitter (5) after by polarization rotation device (9), after beam splitter (5), be divided into two-way laser, wherein a road is successively through the first polarizing beam splitter mirror (6), the 3rd quarter-wave plate (16) enters the first scattering medium (2), in the first scattering medium (2), produce respectively more weak forward scattering light beam and back scattering light beam, wherein forward scattering light beam passes through optical delay device (19) and the second polarizing beam splitter mirror (7) enters the second scattering medium (3) afterwards successively, the back scattering light beam wherein producing in the first scattering medium (2) is entered the 3rd scattering medium (4) after the first polarizing beam splitter mirror (6) reflection afterwards through the 3rd quarter-wave plate (16), after the other reflection of road laser beam through the second completely reflecting mirror (15) producing afterwards through beam splitter (5), incide on the 3rd polarizing beam splitter mirror (10), through the 3rd polarizing beam splitter mirror (10), be divided into afterwards two-way laser, the laser beam being wherein reflected incides in the 3rd scattering medium (4) afterwards through the 4th quarter-wave plate (17) and the 4th polarizing beam splitter mirror (11) and the first quarter-wave plate (8) successively, weak back scattering light beam for reverse transfer amplifies, with the back scattering light beam that obtains effectively utilizing, the back scattering light beam being exaggerated is reflexed to outside this compatible apparatus by the 4th polarizing beam splitter mirror (11) afterwards through the first quarter-wave plate (8), at the transmitted light beam producing afterwards through the 3rd polarizing beam splitter mirror (10), through aperture (12), by the first completely reflecting mirror (14), reflected afterwards, then through the second quarter-wave plate (13), after the second polarizing beam splitter mirror (7) reflection, incided in the second scattering medium (3) forward scattering light beam is amplified afterwards, with the forward scattering light beam that obtains effectively utilizing, wherein the first scattering medium (2), the second scattering medium (3) and the 4th scattering medium (4) are identical scattering mediums, described controller (18) is connected with polarization rotation device (9) and pulsed laser (1) respectively, the polarization anglec of rotation that control occurs through the laser beam of polarization rotation device (9) respectively and the control of laser output power or wavelength, the effect of wherein said optical delay device (19) is that the forward scattering light in the first scattering medium (2) is arrived in the 3rd scattering medium (3) with the laser beam reflecting through the first completely reflecting mirror (14) simultaneously, the second quarter-wave plate (13) wherein and the 4th quarter-wave plate (17) are the quarter-wave plate to described pulsed laser (1) output wavelength, the first quarter-wave plate (8) and the 3rd quarter-wave plate (16) are the quarter-wave plate to back scattering optical wavelength.
According to one embodiment of the invention, the bandwidth of described laser output laser beam is less than or equal to 30nm.
According to one embodiment of the invention, the splitting ratio of described beam splitter (5) is transmitted light/reflected light=3/7-4/6.
According to one embodiment of the invention, described splitting ratio is 3/7.
According to one embodiment of the invention, the aperture of described aperture (12) is preferably equal to or slightly less than the diameter of the laser beam that laser instrument 1 launches.
According to one embodiment of the invention, described polarization rotation device (9) is magnetic opticity medium, and it can realize 0 to 90 degree rotation.
According to one embodiment of the invention, described polarization rotation device (9) is for realizing the quartz crystal of Q-switch, and it can realize the rotation of 0 degree or 90 degree.
According to one embodiment of the invention, described optical delay device (19) comprises four completely reflecting mirrors and an aperture, for realizing the delay of beam Propagation.
Accompanying drawing explanation
Embodiment
With embodiment, describe forward scattering of the present invention and back scattering compatible apparatus in detail below.
In accompanying drawing 1,1 indicating impulse laser instrument, 2,3,4 represent identical scattering medium, 5 represent beam splitter, 6,7,10,11 represent polarizing beam splitter mirror, 14,15 represent completely reflecting mirrors, 8,, 13,16,17 represent quarter-wave plates, 12 represent aperture, 9 represent polarization rotation device, and 18 represent controller, and 19 represent optical delay device.
Pulsed laser 1 sends the linearly polarized laser bundle of pulse, this laser beam incides on beam splitter 5 after by polarization rotation device 9, after beam splitter 5, be divided into two-way laser, wherein polarizing beam splitter mirror 6 is passed through on a road successively, quarter-wave plate 16 enters scattering medium 2, in medium 2, produce respectively more weak forward scattering light beam and back scattering light beam, wherein forward scattering light beam is successively through entering scattering medium 3 after optical delay device 19 and polarizing beam splitter mirror 7, the back scattering wherein producing in scattering medium 2 enters scattering medium 4 after being polarized beam splitter 6 reflections after quarter-wave plate 16, after the other reflection of road laser through completely reflecting mirror 15 through producing after beam splitter 5, incide on polarizing beam splitter mirror 10, through being divided into two-way laser after polarizing beam splitter mirror, the laser beam being wherein reflected is successively through inciding in scattering medium 4 after quarter-wave plate 17 and polarizing beam splitter mirror 11 and quarter-wave plate 8, weak back scattering light beam for reverse transfer amplifies, with the back scattering light beam that obtains effectively utilizing, the back scattering light beam being exaggerated reflexes to outside device through being polarized beam splitter 11 after quarter-wave plate 8, after the transmitted light beam through producing after polarizing beam splitter mirror is through aperture 12, being totally reflected mirror 14 reflects, then through being polarized after quarter-wave plate 13, incide that scattering medium 3 is interior to be amplified forward scattering light beam after beam splitter 7 reflections, with the forward scattering light beam that obtains effectively utilizing.Wherein the crossing two-way light beam in scattering medium 3 and 4 is all that the mode overlapping completely intersects.
Under each parts of regarding in said apparatus be described in detail, pulsed laser wherein need to send the linearly polarized laser bundle of pulse, it can not be the laser beam of non-linear polarization, otherwise cannot produce forward scattering and the back scattering of expection, output wavelength can be selected arbitrarily, as long as adapt with selected scattering medium, below the preferred 30nm of light beam bandwidth that this laser instrument is exported, otherwise the difficulty that becomes of scattering will be made.Quarter- wave plate 13 and 17 is wherein the quarter-wave plate to laser instrument 1 output wavelength, quarter- wave plate 8 and 16 is the quarter-wave plate to back scattering optical wavelength, scattering medium 2,, 3,4 be identical scattering medium, they can comprise the liquid mediums such as water, carbon disulphide, can be also the solid state mediums of KDP etc., wherein this scattering medium selects wavelength and the experiment demand that will export with laser instrument to adapt, and does not need to be fixed as which kind of concrete medium.If three kinds of medium differences, may cause this experimental provision to use, also can not produce effective forward and backward scattered beam.Beam splitter 5 is general beam splitter, also be about to pro rata transmitted light beam and the folded light beam of being divided into of light beam of incident, the splitting ratio of beam splitter 5 of the present invention is preferably transmitted light/reflected light=3/7-4/6 (beam intensity ratio), be preferably 3/7, through such selection, can efficiently be utilized and farthest be produced the effect of scattered beam.
Completely reflecting mirror 14 and 15 does not wherein have special requirement, is preferably metallic-membrane plating reflector, preferably with the highest reflectivity, laser beam is reflected.The aperture of aperture 12 is preferably equal to or slightly less than the diameter of the laser beam that laser instrument 1 launches, the spatial noise producing in the transmission in long path for filtering laser beam.
Polarizing beam splitter mirror 6,7,10,11 adopts polarizing beam splitter mirror of the prior art, also, for the linearly polarized light beam transmission of a direction, the linearly polarized light beam perpendicular to this direction is reflected.
Claims (9)
1. the forward scattering based on pulse laser beam and a back scattering compatible apparatus, is characterized in that: this device can be realized forward scattering and back scattering simultaneously, or selectablely realizes single forward scattering or single back scattering.
2. forward scattering and the back scattering compatible apparatus based on pulse laser beam according to claim 1, it is characterized in that: comprising: the pulsed laser (1) of polarization light output, the first scattering medium (2), the second scattering medium (3), the 3rd scattering medium (4), beam splitter (5), the first polarizing beam splitter mirror (6), the second polarizing beam splitter mirror (7), the 3rd polarizing beam splitter mirror (10), the 4th polarizing beam splitter mirror (11), the first completely reflecting mirror (14), the second completely reflecting mirror (15), the first quarter-wave plate (8), the second quarter-wave plate (13), the 3rd quarter-wave plate (16), the 4th quarter-wave plate (17), aperture (12), polarization rotation device (9), controller (18) and optical delay device (19), the linearly polarized laser bundle that described laser instrument (1) sends pulse incides on beam splitter (5) after by polarization rotation device (9), after beam splitter (5), be divided into two-way laser, wherein a road is successively through the first polarizing beam splitter mirror (6), the 3rd quarter-wave plate (16) enters the first scattering medium (2), in the first scattering medium (2), produce respectively more weak forward scattering light beam and back scattering light beam, wherein forward scattering light beam passes through optical delay device (19) and the second polarizing beam splitter mirror (7) enters the second scattering medium (3) afterwards successively, the back scattering light beam wherein producing in the first scattering medium (2) is entered the 3rd scattering medium (4) after the first polarizing beam splitter mirror (6) reflection afterwards through the 3rd quarter-wave plate (16), after the other reflection of road laser beam through the second completely reflecting mirror (15) producing afterwards through beam splitter (5), incide on the 3rd polarizing beam splitter mirror (10), through the 3rd polarizing beam splitter mirror (10), be divided into afterwards two-way laser, the laser beam being wherein reflected incides in the 3rd scattering medium (4) afterwards through the 4th quarter-wave plate (17) and the 4th polarizing beam splitter mirror (11) and the first quarter-wave plate (8) successively, weak back scattering light beam for reverse transfer amplifies, with the back scattering light beam that obtains effectively utilizing, the back scattering light beam being exaggerated is reflexed to outside this compatible apparatus by the 4th polarizing beam splitter mirror (11) afterwards through the first quarter-wave plate (8), at the transmitted light beam producing afterwards through the 3rd polarizing beam splitter mirror (10), through aperture (12), by the first completely reflecting mirror (14), reflected afterwards, then through the second quarter-wave plate (13), after the second polarizing beam splitter mirror (7) reflection, incided in the second scattering medium (3) forward scattering light beam is amplified afterwards, with the forward scattering light beam that obtains effectively utilizing, wherein the first scattering medium (2), the second scattering medium (3) and the 4th scattering medium (4) are identical scattering mediums, described controller (18) is connected with polarization rotation device (9) and pulsed laser (1) respectively, the polarization anglec of rotation that control occurs through the laser beam of polarization rotation device (9) respectively and the control of laser output power or wavelength, the effect of wherein said optical delay device (19) is that the forward scattering light in the first scattering medium (2) is arrived in the 3rd scattering medium (3) with the laser beam reflecting through the first completely reflecting mirror (14) simultaneously, the second quarter-wave plate (13) wherein and the 4th quarter-wave plate (17) are the quarter-wave plate to described pulsed laser (1) output wavelength, the first quarter-wave plate (8) and the 3rd quarter-wave plate (16) are the quarter-wave plate to back scattering optical wavelength.
3. forward scattering according to claim 1 and 2 and back scattering compatible apparatus, is characterized in that: the bandwidth of described laser output laser beam is less than or equal to 30nm.
4. forward scattering according to claim 1 and 2 and back scattering compatible apparatus, is characterized in that: the splitting ratio of described beam splitter (5) is transmitted light/reflected light=3/7-4/6.
5. forward scattering according to claim 4 and back scattering compatible apparatus, is characterized in that: described splitting ratio is 3/7.
6. forward scattering according to claim 1 and 2 and back scattering compatible apparatus, is characterized in that: the aperture of described aperture (12) is preferably equal to or slightly less than the diameter of the laser beam that laser instrument 1 launches.
7. forward scattering according to claim 1 and 2 and back scattering compatible apparatus, is characterized in that: described polarization rotation device (9) is magnetic opticity medium, and it can realize 0 to 90 degree rotation.
8. forward scattering according to claim 1 and 2 and back scattering compatible apparatus, is characterized in that: described polarization rotation device (9) is for realizing the quartz crystal of Q-switch, and it can realize the rotation of 0 degree or 90 degree.
9. forward scattering according to claim 1 and 2 and back scattering compatible apparatus, is characterized in that: described optical delay device (19) comprises four completely reflecting mirrors and an aperture, for realizing the delay of beam Propagation.
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| CN201410026016.XA CN103744190B (en) | 2014-01-17 | 2014-01-17 | Based on forward scattering and the back scattering compatible apparatus of pulse laser beam |
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| CN201410026016.XA CN103744190B (en) | 2014-01-17 | 2014-01-17 | Based on forward scattering and the back scattering compatible apparatus of pulse laser beam |
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| CN103744190B CN103744190B (en) | 2016-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104227232A (en) * | 2014-07-15 | 2014-12-24 | 天津理工大学 | Method for generating multi-angle spatial transmission light beams and beam splitting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368899A (en) * | 2008-10-16 | 2009-02-18 | 丹东百特科技有限公司 | Single-beam double-lens laser particle analyzer |
| CN102012529A (en) * | 2010-09-20 | 2011-04-13 | 西安电子科技大学 | System and method for detecting target back trace in water based on laser pulse back scattering |
| CN102811090A (en) * | 2012-08-20 | 2012-12-05 | 慈溪市供电局 | Method and system for roll-call testing of optical fibers |
| CN203941347U (en) * | 2014-04-11 | 2014-11-12 | 华北电力大学（保定） | Forward scattering based on pulse laser beam and back scattering compatible apparatus |
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2014
- 2014-01-17 CN CN201410026016.XA patent/CN103744190B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368899A (en) * | 2008-10-16 | 2009-02-18 | 丹东百特科技有限公司 | Single-beam double-lens laser particle analyzer |
| CN102012529A (en) * | 2010-09-20 | 2011-04-13 | 西安电子科技大学 | System and method for detecting target back trace in water based on laser pulse back scattering |
| CN102811090A (en) * | 2012-08-20 | 2012-12-05 | 慈溪市供电局 | Method and system for roll-call testing of optical fibers |
| CN203941347U (en) * | 2014-04-11 | 2014-11-12 | 华北电力大学（保定） | Forward scattering based on pulse laser beam and back scattering compatible apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104227232A (en) * | 2014-07-15 | 2014-12-24 | 天津理工大学 | Method for generating multi-angle spatial transmission light beams and beam splitting device |
| CN104227232B (en) * | 2014-07-15 | 2016-06-15 | 天津理工大学 | The production method of spacial multi-angle transmitting beam and beam splitting arrangement |
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