CN103852950A - Device for precisely adjusting capillary waveguide in Raman cell - Google Patents
Device for precisely adjusting capillary waveguide in Raman cell Download PDFInfo
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- CN103852950A CN103852950A CN201210510133.4A CN201210510133A CN103852950A CN 103852950 A CN103852950 A CN 103852950A CN 201210510133 A CN201210510133 A CN 201210510133A CN 103852950 A CN103852950 A CN 103852950A
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- raman pond
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Abstract
The invention discloses a device for precisely adjusting a capillary waveguide in a Raman cell, which comprises two sets of five-dimensional adjusting mechanisms, the Raman cell (5) and the capillary waveguide (8) arranged on the central axis in the Raman cell (5). Each five-dimensional adjusting mechanism comprises a collar (14) for fixing the Raman cell tube, a second integrated ring (15) for vertical clamping, a third integrated ring (16) for horizontal clamping, a leftward and rightward one-dimensional moving platform (20), an upward and downward one-dimensional lifting platform (21) and a forward and backward one-dimensional slide way (13), so that one port of the capillary waveguide (8) in the Raman cell (5) can be actively three-dimensionally adjusted leftward, rightward, upward, downward, forward and backward and passively two-dimensionally adjusted in a free rotation manner within a horizontal plane and a vertical plane. An experiment result shows that pump light can obtain a high transmittance because of the precision adjustment of the device and that the optimum coupled transmission loss value of the pump light is less than 10 percent.
Description
Technical field
The present invention relates to stimulated Raman scattering technical field, particularly the device of capillary waveguide in a kind of minute adjustment Raman pond.
Background technology
Stimulated Raman scattering technology is one of important technical realizing wavelength conversion.Wherein, gas Raman medium has the advantages such as good heat pipe rationality, higher damage threshold (more may realize the output of macro-energy raman laser), high Raman mode of vibration (Raman frequency shift greatly) and narrow Raman linewidth, and therefore gas stimulated Raman scattering has obtained people's research extensively and profoundly.Conventional gas Raman medium has H
2, CH
4, O
2and N
2deng.
Adopt method that gas medium realizes traditional laser excited Raman frequency conversion mainly: the pump light of pump laser output is through lens focus, importing is full of the interior stimulated Raman scattering process that occurs of Raman pond of hydrogen Raman medium, produce Stokes Raman light, and then obtain excited Raman light by collimation lens, prismatic decomposition.In this process, only near a bit of region inner laser power density focal position of condenser lens can reach stimulated Raman scattering threshold value, that is to say that stimulated Raman scattering only just can occur in this region realizes the frequency inverted to pump light.This just means that traditional hydrogen stimulated Raman scattering threshold value can be higher.Here it is worthy of note, cube being inversely proportional to of stimulated Raman scattering threshold value and pump light wavelength, and the longer gain of wavelength is less, stimulated Raman scattering threshold value will be larger, is excited just more difficult generation of process.
For stable state stimulated Raman scattering process, under small-signal gain condition, (can ignore the loss of pumping light intensity), excited Raman light increases satisfied:
I
s(z)=I
s(0)exp(gI
pz)
Wherein: I
s(z) be the excited Raman light after effect, I
s(0) be spontaneous Raman seed light, g is steady-state gain coefficient, I
pfor pumping light power density, z is Raman light and pump light interaction length.Above formula shows excited Raman light and pumping light power density I
pwith interaction length z exponentially relation with increase.Therefore, people have proposed again a kind of method that reduces hydrogen stimulated Raman scattering threshold value.It is that 1 millimeter of capillary wave conduit is realized by place an internal diameter on Raman pond central axis, that is: the capillary wave conduit one end in Raman pond is at the focus place of condenser lens, pump light imports and is bound in this capillary wave conduit in glancing incidence mode, reach the object that improves pumping light power density, increases interaction length, thereby can reduce effectively significantly Raman threshold, improve excited Raman transformation efficiency.
Because capillary waveguide internal diameter in Raman pond is only 1 millimeter, want the pump light after focusing on to import and be bound in this kapillary, require optical path adjusting error must be controlled at tens to hundreds of micrometer ranges, belong to minute adjustment category.And Raman pond main body is opaque stainless-steel tube, whether the focus after pump light focuses on just enters the kapillary mouth of pipe, is difficult to determine.As this focus could not well import the kapillary mouth of pipe, by badly influencing the Raman transformation efficiency of whole excited Raman process, even do not produce Raman light so.
Summary of the invention
In order to solve above-mentioned optical path adjusting technical matters, the invention provides the device of capillary waveguide in a kind of minute adjustment Raman pond.It is invisible because capillary wave conduit is installed in Raman pond inside, but Raman pond pipe and capillary wave conduits join one, relative position is fixed, thereby therefore the technology of the present invention solution is directly to regulate outside Raman pond tube space position to reach the object that regulates inner Raman pond position.
Technical solution of the present invention is as follows:
A device for capillary waveguide in minute adjustment Raman pond, is characterized in that:
Comprise that two covers five tie up governor motion and a Raman pond;
Capillary wave conduit is placed in the Raman pond of tubulose, and on central axis in Raman pond;
Five dimension governor motion structures comprise: the 3rd integrated ring, left and right directions one dimension translation stage, above-below direction one dimension lifting table and the fore-and-aft direction slide rail of the cutting ferrule ring of fixing Raman pond pipe, second integrated ring of vertical direction clamping, horizontal direction clamping;
On Raman pond outer wall, the position at corresponding capillary wave conduit two ends is respectively equipped with circular cutting ferrule ring, and two cutting ferrule rings are radially fastened in the outside wall surface of Raman pond, prevents that Raman pond from arbitrarily rotating;
Put respectively circular second integrated ring at the outer surface of two cutting ferrule ring radial direction, in the top of second integrated ring sidewall and lower sidewalls, be respectively equipped with through hole, in through hole, all place the first self-locking screw rod, on the annulus outside surface of cutting ferrule ring, being respectively equipped with two sections corresponding to the through hole of second integrated ring is fan-shaped pyramid type breach, one end of the first self-locking screw rod is connected in the breach of cutting ferrule ring, and the first top, self-locking screw rod one end being connected in breach is hemispherical, become line to contact with the pyramid type breach on cutting ferrule ring, be used for realizing capillary wave conduit and in surface level, freely rotate dimension adjusting,
Put respectively circular the 3rd integrated ring at the outer surface of two second integrated ring radial direction, on the left sidewall of the 3rd integrated ring and right-hand sidewall, be respectively equipped with through hole, in through hole, all place the second self-locking screw rod, on the annulus outside surface of second integrated ring, being respectively equipped with two sections corresponding to the through hole of the 3rd integrated ring is fan-shaped pyramid type breach, one end of the second self-locking screw rod is connected in the breach of second integrated ring, and the second top, self-locking screw rod one end being connected in breach is hemispherical, become line to contact with the pyramid type breach on second integrated ring, be used for realizing capillary wave conduit and in vertical plane, freely rotate dimension adjusting,
After above-mentioned assembling, two the 3rd integrated rings be securely installed in two can one dimension left and right adjusting translation stage on;
Two one dimension left and right translation stages are placed in respectively on two one dimension lifting tables, and one dimension left and right translation stage can slide in the upper left right translation of one dimension lifting table, are used for realizing capillary wave catheter port left and right directions dimension in surface level and regulate;
Two one dimension lifting tables are placed on same slide rail, and two one dimension lifting tables can lifting along the vertical direction on slide rail, is used for realizing capillary wave catheter port above-below direction dimension in vertical plane and regulates;
Two one dimension lifting table relative positions are fixed simultaneously, can on slide rail, slide along fore-and-aft direction, are used for realizing capillary wave catheter port and regulate in fore-and-aft direction dimension.
Wherein, described cutting ferrule ring is along the circumferential direction mutually to be fastened and form by two central angle 170-178 ° semicircular ring, and two semicircular ring one end fasten by buckle, and the other end, by outer bolt and fastening nuts, is used for fixing Raman pond pipe, prevents its rotation.
Wherein, described in being provided with two support fixtures by one dimension left and right adjusting translation stage, the 3rd integrated ring is placed on and supports on fixture and be fixed.
Wherein, described five dimension governor motions can be realized the left and right of capillary waveguide one port in Raman pond, the upper and lower and three-dimensional active adjustment in front and back, and the passive adjusting of two dimension that realizes capillary wave conduit and freely rotate in surface level and in vertical plane.
Wherein, described capillary wave conduit is supported by the first polytetrafluoro support chip and the second polytetrafluoro support chip, slowly puts into Raman pond; Raman pond is tubulose, and its two ends, left and right are respectively equipped with the first quartz window sheet and the second quartz window sheet, respectively as incidence window and outgoing window.
Wherein, described capillary wave conduit is the quartz ampoule of 1 millimeter of internal diameter.
In a kind of minute adjustment Raman pond that technique scheme provides, the device of capillary waveguide, is arranged on the Raman pond of built-in capillary wave conduit.This compact conformation, is easy to assembling, can realize five dimensions capillaceous and regulate---left and right, the upper and lower and three-dimensional active adjustment in front and back, and the passive adjusting of two dimension of freely rotating in surface level and in vertical plane.By this device for precisely regulating, can well the pump light after focusing on be imported in capillary wave conduit, realize and obtain very high percent of pass.It is worthy of note especially, when carrying out about kapillary one end or up and down or when the active adjustment of front and back, the other end can be realized the passive adjusting of freely rotating in surface level or in vertical plane, can effectively avoid like this impact of rigidity stress on Raman pond stability, ensure the integrally-built stability of layout of Raman pond.
Brief description of the drawings
Fig. 1 is the device diagrammatic cross-section of capillary waveguide in minute adjustment Raman pond of the present invention.Wherein 13-slide rail, 14-cutting ferrule ring, second integrated ring of 15-, the 3rd integrated ring of 16-, 17-the first self-locking screw rod, 18-the second self-locking screw rod, 19-supports fixture, 20-translation stage, 21-lifting table.
Fig. 2 is cutting ferrule ring diagrammatic cross-section of the present invention.
Fig. 3 is the hydrogen stimulated Raman scattering apparatus structure schematic diagram containing capillary wave conduit of the embodiment of the present invention, wherein 1-pump laser, 2-condenser lens, 3-incident end the first quartz window sheet, 4-exit end the second quartz window sheet, 5-Raman pond, 6-the first polytetrafluoro support chip, 7-the second polytetrafluoro support chip, 8-capillary wave conduit, 9-rain glass, 10-charging valve, 11,12-governor motion, 13-slide rail.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
In two line place of above-mentioned Raman pond 5 outer walls, successively block with two cutting ferrule rings 14, prevent that Raman pond from arbitrarily rotating.Wherein cutting ferrule ring 14 is along the circumferential direction mutually to be fastened and form by two central angle 170-178 ° semicircular ring, and two semicircular ring one end fasten by buckle, and the other end, by outer bolt and fastening nuts, is used for fixing Raman pond pipe, prevents its rotation.Then put respectively circular second integrated ring 15 at the outer surface of two cutting ferrule ring 14 radial direction.Wherein, in the top sidewall of second integrated ring 15 and lower sidewalls, be respectively equipped with through hole, in through hole, all placed the first self-locking screw rod 17; And on the annulus outside surface of cutting ferrule ring 14, being respectively equipped with two sections corresponding to the through hole of second integrated ring 15 is fan-shaped pyramid type breach.One end of two the first self-locking screw rods 17 is self-locking, other end top is hemispherical, be connected to respectively in two conical breach of cutting ferrule ring 14 vertical directions, and become line to contact with pyramid type breach, in surface level, freely rotate dimension adjusting therefore can realize capillary wave conduit 8.Put respectively circular the 3rd integrated ring 16 at the outer surface of two second integrated ring 15 radial direction again.Wherein, on the left sidewall of the 3rd integrated ring 16 and right-hand sidewall, be respectively equipped with through hole, in through hole, all placed the second self-locking screw rod 18; And on the annulus outside surface of second integrated ring 15, being respectively equipped with two sections corresponding to the through hole of the 3rd integrated ring 16 is fan-shaped pyramid type breach.One end of two the second self-locking screw rods 18 is self-locking, other end top is also hemispherical, be connected to respectively in two conical breach in the horizontal direction of second integrated ring 15, and become line to contact with pyramid type breach, in vertical plane, freely rotate dimension adjusting therefore can realize capillary wave conduit 8.Two the 3rd integrated rings 16 after assembling are placed on respectively on two support fixtures 19 on two one dimension left and right translation stages 20 and are fixed; Two one dimension left and right translation stages 20 are placed in respectively (one dimension left and right translation stage 20 can slide in the upper left right translation of one dimension lifting table 21) on two one dimension lifting tables 21, are used for realizing capillary wave catheter port left and right directions dimension in surface level and regulate.Down two one dimension lifting tables 21 are placed on same slide rail 13 again, and two one dimension lifting tables 21 can be respectively at lifting along the vertical direction on slide rail 13, are used for realizing capillary wave conduit 8 ports above-below direction dimension in vertical plane and regulate.Two one dimension lifting table 21 relative positions are fixed simultaneously, can on slide rail 13, slide along fore-and-aft direction, are used for realizing capillary wave conduit 8 ports and regulate in fore-and-aft direction dimension.The regulating device assembling of this whole Raman pond 5 containing capillary wave conduit 8 is complete, and front section view refers to shown in the right one side of something of Fig. 3, and side sectional view in detail as shown in Figure 1.
The embodiment of the present invention, in detail as shown in Figure 3, adopt U.S. Continuum Nd:YAG laser instrument fundamental frequency light 1064nm as pump light (its bright dipping is highly definite), by condenser lens 2(focal distance f=1000mm) focus on and import in Raman pond 5 through incident end first window sheet 3.By the fixing lifting table 21 of two relative positions on shifting sledge 13, realize the front and back one dimension active adjustment of Raman pond 5 entirety, make the focus of pump light at the mouth of pipe of capillary wave conduit 8.While regulating the height of lifting table 21, realize the active adjustment of one dimension up and down to kapillary 8 ports.Regulate the knob of translation stage 20, realize the left and right one dimension active adjustment to kapillary 8 ports.What the three-dimensional active adjustment of kapillary 8 one end can cause the other end freely rotates the passive adjusting of bidimensional.Often carrying out the adjusting of a dimension, is all to measure pump energy outside Raman pond 5 exit end Second Window sheets 4 to reach local maximum be optimum position (pump energy is not as good as stimulated Raman scattering threshold value).In experiment, regulate above-mentioned each dimension, when the pump light exporting when laser instrument 1 is 16.6mJ, the pump light of Raman pond 5 outgoing windows is 10.0mJ to the maximum; When the pump light exporting when laser instrument 1 is 14.0mJ, the pump light of Raman pond 5 outgoing windows is 8.8mJ to the maximum; When the pump light exporting when laser instrument 1 is 20.8mJ, the pump light of Raman pond 5 outgoing windows is 12.6mJ to the maximum.Can draw from these experimental datas: regulate by this precision apparatus, the maximum percent of pass of pump light is 63%.Wherein, after tested, the first quartz window sheet 3 at condenser lens 2, Raman pond 5 two ends and total loss rate of the second quartz window sheet 4 are 28%.Calibrated, the maximum percent of pass of pump light is 91%.Experimental result shows, by the device of capillary waveguide in this minute adjustment Raman pond, the transmission coupling loss optimum value of pump light is less than 10%, is very beneficial for next step stimulated Raman scattering process.
Claims (6)
1. a device for capillary waveguide in minute adjustment Raman pond, is characterized in that:
Comprise that two covers five tie up governor motion and a Raman pond (5);
Capillary wave conduit (8) is placed in the Raman pond (5) of tubulose, and on central axis in Raman pond (5);
Five dimension governor motion structures comprise: the 3rd integrated ring (16), left and right directions one dimension translation stage (20), above-below direction one dimension lifting table (21) and the fore-and-aft direction slide rail (13) of the cutting ferrule ring (14) of fixing Raman pond pipe, second integrated ring (15) of vertical direction clamping, horizontal direction clamping;
On Raman pond (5) outer wall, the position at corresponding capillary wave conduit (8) two ends is respectively equipped with circular cutting ferrule ring (14), and two cutting ferrule rings (14) are radially fastened in the outside wall surface of Raman pond (5), prevents that Raman pond (5) from arbitrarily rotating;
Outer surface in two cutting ferrule rings (14) radial direction puts respectively circular second integrated ring (15), in the top sidewall of second integrated ring (15) and lower sidewalls, be respectively equipped with through hole, in through hole, all place the first self-locking screw rod (17), on the annulus outside surface of cutting ferrule ring (14), being respectively equipped with two sections corresponding to the through hole of second integrated ring (15) is fan-shaped pyramid type breach, one end of the first self-locking screw rod (17) is connected in the breach of cutting ferrule ring (14), and the first self-locking screw rod (17) top, one end being connected in breach is hemispherical, become line to contact with the pyramid type breach on cutting ferrule ring (14), be used for realizing capillary wave conduit (8) and in surface level, freely rotate dimension adjusting,
Outer surface in two second integrated ring (15) radial direction puts respectively circular the 3rd integrated ring (16), on the left sidewall of the 3rd integrated ring (16) and right-hand sidewall, be respectively equipped with through hole, in through hole, all place the second self-locking screw rod (18), on the annulus outside surface of second integrated ring (15), being respectively equipped with two sections corresponding to the through hole of the 3rd integrated ring (16) is fan-shaped pyramid type breach, one end of the second self-locking screw rod (18) is connected in the breach of second integrated ring (15), and the second self-locking screw rod (18) top, one end being connected in breach is hemispherical, become line to contact with the pyramid type breach on second integrated ring (15), be used for realizing capillary wave conduit (8) and in vertical plane, freely rotate dimension adjusting,
After above-mentioned assembling, two the 3rd integrated rings (16) be securely installed in two can one dimension left and right adjusting translation stage (20) on;
Two one dimension left and right translation stages (20) are placed in respectively on two one dimension lifting tables (21), one dimension left and right translation stage (20) can slide in the upper left right translation of one dimension lifting table (21), is used for realizing capillary wave conduit (8) port left and right directions dimension in surface level and regulates;
It is upper that two one dimension lifting tables (21) are placed in same slide rail (13), and two one dimension lifting tables (21) can, respectively at independent-lifting along the vertical direction on slide rail (13), be used for realizing capillary wave conduit (8) port above-below direction dimension in vertical plane and regulate;
Two one dimension lifting tables (21) relative position is fixed simultaneously, can slide along fore-and-aft direction in slide rail (13) is upper, is used for realizing capillary wave conduit (8) port and regulates in fore-and-aft direction dimension.
2. device as claimed in claim 1, is characterized in that:
Described cutting ferrule ring (14) is along the circumferential direction mutually to be fastened and form by two central angle 170-178 ° semicircular ring, and two semicircular ring one end fasten by buckle, and the other end, by outer bolt and fastening nuts, is used for fixing Raman pond pipe (5), prevents its rotation.
3. device as claimed in claim 1, is characterized in that:
In being provided with two support fixtures (19) by one dimension left and right translation stage (20), the 3rd integrated ring (16) is placed on support fixture (19) and goes up and be fixed.
4. device as claimed in claim 1, is characterized in that:
Described five dimension governor motions can be realized the left and right of capillary waveguide (8) one ports in Raman pond, the upper and lower and three-dimensional active adjustment in front and back, and the passive adjusting of two dimension that realizes capillary wave conduit (8) and freely rotate in surface level and in vertical plane.
5. device as claimed in claim 1, is characterized in that:
Described capillary wave conduit (8) is supported by the first polytetrafluoro support chip (6) and the second polytetrafluoro support chip (7), slowly puts into Raman pond (5); Raman pond (5) is tubulose, and its two ends, left and right are respectively equipped with the first quartz window sheet (3) and the second quartz window sheet (4), respectively as incidence window and outgoing window.
6. device as claimed in claim 1, is characterized in that:
Described capillary wave conduit (8) is the quartz ampoule of 1 millimeter of internal diameter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210510133.4A CN103852950B (en) | 2012-12-03 | 2012-12-03 | The device of capillary waveguide in a kind of fine adjustment Raman pond |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210510133.4A CN103852950B (en) | 2012-12-03 | 2012-12-03 | The device of capillary waveguide in a kind of fine adjustment Raman pond |
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| Publication Number | Publication Date |
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| CN103852950A true CN103852950A (en) | 2014-06-11 |
| CN103852950B CN103852950B (en) | 2016-08-03 |
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| CN201210510133.4A Expired - Fee Related CN103852950B (en) | 2012-12-03 | 2012-12-03 | The device of capillary waveguide in a kind of fine adjustment Raman pond |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136770A (en) * | 2015-08-13 | 2015-12-09 | 苏州优谱德精密仪器科技有限公司 | Automatic liquid detection method |
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| US20040085621A1 (en) * | 2001-10-26 | 2004-05-06 | Kayato Sekiya | Raman amplification control method, optical communication system, optical amplifier and program |
| EP2106043A1 (en) * | 2008-03-24 | 2009-09-30 | Fujitsu Limited | Monitoring method and apparatus of noise light due to raman amplification and optical communication system using the same |
| CN201489178U (en) * | 2009-08-20 | 2010-05-26 | 北京卓立汉光仪器有限公司 | Five-dimensional adjusting mechanism of elliptic reflection collecting mirror |
| CN201508364U (en) * | 2009-06-04 | 2010-06-16 | 大连齐维科技发展有限公司 | Five-dimensional driver |
| CN102751645A (en) * | 2012-07-18 | 2012-10-24 | 南京邮电大学 | Five-dimensional precision fine-adjustment fixture for ultrashort optical fibers |
-
2012
- 2012-12-03 CN CN201210510133.4A patent/CN103852950B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040085621A1 (en) * | 2001-10-26 | 2004-05-06 | Kayato Sekiya | Raman amplification control method, optical communication system, optical amplifier and program |
| EP2106043A1 (en) * | 2008-03-24 | 2009-09-30 | Fujitsu Limited | Monitoring method and apparatus of noise light due to raman amplification and optical communication system using the same |
| CN201508364U (en) * | 2009-06-04 | 2010-06-16 | 大连齐维科技发展有限公司 | Five-dimensional driver |
| CN201489178U (en) * | 2009-08-20 | 2010-05-26 | 北京卓立汉光仪器有限公司 | Five-dimensional adjusting mechanism of elliptic reflection collecting mirror |
| CN102751645A (en) * | 2012-07-18 | 2012-10-24 | 南京邮电大学 | Five-dimensional precision fine-adjustment fixture for ultrashort optical fibers |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136770A (en) * | 2015-08-13 | 2015-12-09 | 苏州优谱德精密仪器科技有限公司 | Automatic liquid detection method |
| CN105136770B (en) * | 2015-08-13 | 2017-09-29 | 苏州优谱德精密仪器科技有限公司 | Liquid automatic testing method |
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