CN105044075A - Mini-type optical fiber detection probe for raman spectrometer - Google Patents
Mini-type optical fiber detection probe for raman spectrometer Download PDFInfo
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- CN105044075A CN105044075A CN201510353851.9A CN201510353851A CN105044075A CN 105044075 A CN105044075 A CN 105044075A CN 201510353851 A CN201510353851 A CN 201510353851A CN 105044075 A CN105044075 A CN 105044075A
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Abstract
The invention discloses a mini-type optical fiber detection probe for a raman spectrometer. The mini-type optical fiber detection probe comprises an optical fiber circulator, an optical fiber probe component with the functions of focusing and light-filtering, a Bragg fiber bragg grating, an optical cable, a raman spectrometer input interface and a raman spectrometer output interface, wherein the raman spectrometer output interface is connected with the optical fiber circulator; the optical fiber circulator is connected with the optical fiber probe component through the optical cable; the Bragg fiber bragg grating is connected between the raman spectrometer input interface and the optical fiber circulator; laser is transmitted to the surface of a sample through the output interface, the optical fiber circulator and the optical fiber probe component in sequence; scattered light is transmitted to the raman spectrometer input interface through the optical fiber probe component, the optical fiber circulator, and the Bragg fiber bragg grating in sequence. The mini-type optical fiber detection probe has the advantages that the structure is simple; the use is convenient; light exciting and light collection adopt the same optical path, so that the collection efficiency is high, the structure is simple, and mini-type probe-type probe detection can be realized.
Description
Technical field
The present invention relates to a kind of probe of laser Raman spectrometer, in particular a kind of Raman spectrometer mini optical fibre detection probe.
Background technology
Along with scientific research and general marketplace are to the scene of material molecular structure, the constantly surging of quick, accurate detection demand, the Raman spectrometer of portability is constantly subject to the favor of each research institution.The continuous microminiaturization of instrument correspondingly also requires the microminiaturization that Raman detection is popped one's head in.Although current Raman detection probe is also with optical fiber to export, the front end of probe remains and adopts free space light path.Raman probe excites as the collimation of light beam, the collection of scattered light, faint Raman diffused light filtering extraction, parasitic light shielding function, determine space optical path Raman detection probe light path complicacy, the compactedness of structure is also restricted greatly.Which results in current commercial Raman probe and can only be applied to sample surfaces detection, and narrow space more cannot be applied to, such as archaeology or the field such as internal in-situ detection, diagnosis medically.Therefore need to design and a kind ofly can generally be applied to various occasion and can the micro Raman detection probe of Efficient Collection Raman light signal.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of Raman spectrometer mini optical fibre detection probe, all-fiber light path can improve Raman scattering signal and collect and energy coupling efficiency.
The present invention is achieved by the following technical solutions, the present invention includes optical fiber circulator, with the fibre-optical probe assembly focused on and filter, bragg grating, optical cable, the input interface of Raman spectrometer and output interface; The output interface connecting fiber circulator of described Raman spectrometer, described optical fiber circulator is by optical cable connecting fiber probe assembly, described bragg grating is connected between the input interface of Raman spectrometer and optical fiber circulator, laser transfers to sample surfaces from output interface, optical fiber circulator, fibre-optical probe assembly successively, and scattered light is transferred to the input interface of Raman spectrometer successively by fibre-optical probe assembly, optical fiber circulator, bragg grating.
Described optical fiber circulator is one-way transmission optical device, described optical fiber circulator comprises the first port, the second port and the 3rd port, described first port unilaterally connected second port, second port unilaterally connected the 3rd port, the output interface of described Raman spectrometer, the first port, the second port are connected transmitting optical signal successively with optical cable, and described optical cable, the second port, the 3rd port are connected transmitting optical signal successively with bragg grating.
Optical fiber circulator can realize single fiber bi-directional transmission, the light signal of the first port input only exports at the second port, the light signal of the second port input only exports at the 3rd port, can make like this to adopt an optical fiber transceiving light signal in fibre-optical probe assembly, improve the collection efficiency of probe.
Described fibre-optical probe assembly comprises optical fiber, lock pin, lens, sleeve pipe, the end of described optical fiber is inserted lock pin and is fixedly connected in lock pin, described lens are self-focusing or self-focus lens, described lens and lock pin are separately fixed in sleeve pipe, the end, one end of described lens is aimed at fixing with fiber end face, the other end end of lens is provided with long pass filter for filtering anti-Stokes spectrum and parasitic light or the long logical filter coating of plating.
Fibre-optical probe assembly is focused on by self-focusing or self-focus lens exciting light and the scattered light collected or collimate, self-focusing or self-focus lens end face can directly be aimed at fixing with fiber end face, the light loss produced that intercouples between space optical path and optical fiber can be avoided like this, greatly improve collection efficiency, the diameter of self-focusing simultaneously or self-focus lens is general very little, be only 0.9 ~ 1.8mm, the structure of probe assembly can be ensured closely.
Exciting light inputs into lens through the second port of optical fiber circulator, through focusing on or getting on sample after collimation.Scattered light is input to bragg grating through lens again coupled into optical fibres and by the 3rd port of optical fiber circulator.
Described optical fiber, lock pin, lens, sleeve pipe outer cladding are packaged with sheath.Can protect further fibre-optical probe assembly.
Described lock pin is glass lock pin or ceramic insertion core, the internal diameter of described lock pin and the cladding outer diameter of described optical fiber match, the external diameter of described lock pin and the internal diameter of described sleeve pipe match, and described optical fiber inserts lock pin after removing coat and with epoxy glue or ultraviolet light adhesive curing.
As one of optimal way of the present invention, solidified by ultraviolet light glue bond between described lens and lock pin.Lens can optical fiber light out focus on certain a bit on, also can optical alignment be exported as directional light, specifically characteristic be per sample selected.
As one of optimal way of the present invention, described sleeve pipe is glass bushing or stainless steel sleeve pipe, and described sleeve pipe, lock pin and lens are integrated by epoxy glue or ultraviolet light adhesive curing.
As one of optimal way of the present invention, assemble after the connecting end surface of described lock pin and lens is ground to 8 ° of angles respectively.The impact of boundary reflection can be reduced.
The centre wavelength of described bragg grating equals the wavelength of laser instrument on Raman spectrometer.
Bragg grating is, by the method for ultraviolet photoetching, incident light coherent field pattern is write fibre core, the refractive index periodic produced in fibre core along fibre core axis changes, and its effect forms arrowband (transmission or reflection) wave filter or catoptron in fibre core.When light beam is through fiber grating, generation is reflected by the wavelength meeting fiber grating Bragg condition, remaining wavelength continues transmission through fiber grating, grating fibers has that wavelength selectivity is good, added losses are little, device miniaturization, coupling are good, can with the advantage such as optical cable or other optical fibre devices combine together.Through fibre-optical probe collect components to scattered light in Rayleigh scattering light by suppressed after bragg grating filtering, only stay Raman diffused light to pass through.
As one of optimal way of the present invention, the input interface of described Raman spectrometer and output interface are SMA905 interface.
The present invention has the following advantages compared to existing technology: structure of the present invention is simple, easy to use, and exciting light and collection light all walk same optic fibre light path, and collection efficiency is high, structure is simple, can realize miniature probe formula probe and detect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of fibre-optical probe assembly.
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the present embodiment comprises optical fiber circulator 1, with the fibre-optical probe assembly 2 focused on and filter, bragg grating 3, optical cable 4, the input interface 52 of Raman spectrometer and output interface 51; The output interface 51 connecting fiber circulator 1 of described Raman spectrometer, described optical fiber circulator 1 is by optical cable 4 connecting fiber probe assembly 2, described bragg grating 3 is connected between the input interface 52 of Raman spectrometer and optical fiber circulator 1, laser transfers to sample surfaces from output interface 51, optical fiber circulator 1, fibre-optical probe assembly 2 successively, and scattered light is transferred to the input interface 52 of Raman spectrometer successively by fibre-optical probe assembly 2, optical fiber circulator 1, bragg grating 3.Input interface 52 and output interface 51 are SMA905 interface.
Optical fiber circulator 1 is one-way transmission optical device, described optical fiber circulator 1 comprises the first port 11, second port one 2 and the 3rd port one 3, described first port 11 unilaterally connected second port one 2, second port one 2 unilaterally connected the 3rd port one 3, output interface 51, first port 11, second port one 2 of described Raman spectrometer is connected transmitting optical signal successively with optical cable 4, and described optical cable 4, second port one 2, the 3rd port one 3 are connected transmitting optical signal successively with bragg grating 3.
As shown in Figure 2, fibre-optical probe assembly 2 comprises optical fiber 21, lock pin 22, lens 23, sleeve pipe 24, the end of optical fiber 21 is inserted lock pin 22 and is fixedly connected in lock pin 22, described lens 23 are GRIN Lens 23, described lens 23 be separately fixed in sleeve pipe 24 with lock pin 22, the end, one end of described lens 23 is aimed at fixing with optical fiber 21 end face, the other end end of lens 23 is provided with the long pass filter 25 for filtering anti-Stokes spectrum and parasitic light, can the long logical filter coating of plating in other embodiments.
Optical fiber 21, lock pin 22, lens 23, sleeve pipe 24 outer cladding are packaged with sheath 26.Can protect further fibre-optical probe assembly 2.
The lock pin 22 of the present embodiment is glass lock pin 22, other embodiments can Ceramics lock pin 22, the internal diameter of described lock pin 22 and the cladding outer diameter of described optical fiber 21 match, the external diameter of described lock pin 22 and the internal diameter of described sleeve pipe 24 match, and insert lock pin 22 and use epoxy glue 27 or ultraviolet light adhesive curing after coat removed by described optical fiber 21.
Solidified by ultraviolet light glue bond between lens 23 and lock pin 22.Lens 23 can optical fiber 21 light out focus on certain a bit on, also can optical alignment be exported as directional light, specifically characteristic be per sample selected, and the present embodiment selects GRIN Lens 23, can select self-focus lens 23 in other embodiments.
Sleeve pipe 24 is glass bushing 24, and other embodiments can select stainless steel sleeve pipe 24, and described sleeve pipe 24, lock pin 22 and lens 23 are integrated by epoxy glue or ultraviolet light adhesive curing.
When fibre-optical probe assembly 2 is assembled; optical fiber 21 inserts lock pin 22 after first cutting end face; ultraviolet optical cement is added or epoxy glue is fixed at the hydraucone place of lock pin 22; then by smooth for lock pin 22 end surface grinding; again lock pin 22 and lens 23 are inserted sleeve pipe 24 from two ends respectively and use ultraviolet light adhesive curing; the long pass filter 25 of end face ultraviolet light glue of lens 23, finally loads sheath 26 and carries out packaging protection by said modules.In the present embodiment, the end face of lock pin 22 and lens 23 can grind to form 8 ° of angles and be mounted with, and can reduce the impact of boundary reflection like this.
During assembling, input interface 52 and output interface 51 are connected respectively in the flange of input and output optical fiber of Raman spectrometer.In the present embodiment, the concrete path of light is: laser arrives the first port 11 of optical fiber circulator 1 through output interface 51, and exports fibre-optical probe assembly 2 from the second port one 2 to via optical cable 4.In fibre-optical probe assembly 2, GRIN Lens 23 is by Laser Focusing on testing sample, and the scattered light excited again is coupled in optical fiber 21 after the long pass filter sheet on GRIN Lens 23 end face is by the anti-Stokes spectrum in scattered light and parasitic light filtering.The second port one 2 that the scattered light collected arrives optical fiber circulator 1 through optical cable 4 inputs, and exporting bragg grating 3 to from the 3rd port one 3 of optical fiber circulator 1, Rayleigh scattering light filtering identical with excitation wavelength in incident light can export on Raman spectrometer and carry out spectral scan resolution by bragg grating 3.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a Raman spectrometer mini optical fibre detection probe, is characterized in that, comprises optical fiber circulator, with the fibre-optical probe assembly focused on and filter, bragg grating, optical cable, the input interface of Raman spectrometer and output interface; The output interface connecting fiber circulator of described Raman spectrometer, described optical fiber circulator is by optical cable connecting fiber probe assembly, described bragg grating is connected between the input interface of Raman spectrometer and optical fiber circulator, laser transfers to sample surfaces from output interface, optical fiber circulator, fibre-optical probe assembly successively, and scattered light is transferred to the input interface of Raman spectrometer successively by fibre-optical probe assembly, optical fiber circulator, bragg grating.
2. a kind of Raman spectrometer mini optical fibre detection probe according to claim 1, it is characterized in that, described optical fiber circulator is one-way transmission optical device, described optical fiber circulator comprises the first port, the second port and the 3rd port, described first port unilaterally connected second port, second port unilaterally connected the 3rd port, the output interface of described Raman spectrometer, the first port, the second port are connected transmitting optical signal successively with optical cable, and described optical cable, the second port, the 3rd port are connected transmitting optical signal successively with bragg grating.
3. a kind of Raman spectrometer mini optical fibre detection probe according to claim 1, it is characterized in that, described fibre-optical probe assembly comprises optical fiber, lock pin, lens, sleeve pipe, the end of described optical fiber is inserted lock pin and is fixedly connected in lock pin, described lens are self-focusing or self-focus lens, described lens and lock pin are separately fixed in sleeve pipe, the end, one end of described lens is aimed at fixing with fiber end face, the other end end of lens is provided with long pass filter for filtering anti-Stokes spectrum and parasitic light or the long logical filter coating of plating.
4. a kind of Raman spectrometer mini optical fibre detection probe according to claim 3, it is characterized in that, described optical fiber, lock pin, lens, sleeve pipe outer cladding are packaged with sheath.
5. a kind of Raman spectrometer mini optical fibre detection probe according to claim 3, it is characterized in that, described lock pin is glass lock pin or ceramic insertion core, the internal diameter of described lock pin and the cladding outer diameter of described optical fiber match, the external diameter of described lock pin and the internal diameter of described sleeve pipe match, and described optical fiber inserts lock pin after removing coat and with epoxy glue or ultraviolet light adhesive curing.
6. a kind of Raman spectrometer mini optical fibre detection probe according to claim 3, be is characterized in that, solidified between described lens and lock pin by ultraviolet light glue bond.
7. a kind of Raman spectrometer mini optical fibre detection probe according to claim 3, is characterized in that, described sleeve pipe is glass bushing or stainless steel sleeve pipe, and described sleeve pipe, lock pin and lens are integrated by epoxy glue or ultraviolet light adhesive curing.
8. a kind of Raman spectrometer mini optical fibre detection probe according to claim 3, is characterized in that, assembles after the connecting end surface of described lock pin and lens is ground to 8 ° of angles respectively.
9. a kind of Raman spectrometer mini optical fibre detection probe according to claim 1, it is characterized in that, the centre wavelength of described bragg grating equals the wavelength of laser instrument on Raman spectrometer, and the Rayleigh scattering in light path is filtered by bragg grating.
10. a kind of Raman spectrometer mini optical fibre detection probe according to claim 1, it is characterized in that, the input interface of described Raman spectrometer and output interface are SMA905 interface.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290300A (en) * | 2016-08-04 | 2017-01-04 | 同方威视技术股份有限公司 | Portable raman spectrometer |
| CN106323419A (en) * | 2016-09-30 | 2017-01-11 | 天津市誉航润铭科技发展有限公司 | Novel liquid level sensor |
| CN109507124A (en) * | 2018-12-01 | 2019-03-22 | 湖北理工学院 | A kind of plug-in type liquid molten steel composition device for fast detecting |
| CN109730640A (en) * | 2019-01-08 | 2019-05-10 | 北京信息科技大学 | Raman spectroscopy measurement probe based on fiber bragg grating |
| CN110006865A (en) * | 2019-04-10 | 2019-07-12 | 南京诺源医疗器械有限公司 | Hand-held laser fluorescence spectrum probe assembly |
| WO2021011470A1 (en) * | 2019-07-12 | 2021-01-21 | Massachusetts Institute Of Technology | Systems and methods for stochastically modulated raman spectroscopy |
| CN115420382A (en) * | 2022-08-16 | 2022-12-02 | 元珵科技(北京)有限公司 | Raman probe and working system and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915742A (en) * | 2010-08-10 | 2010-12-15 | 北京路源光科技有限公司 | Raman technology based biodiesel on-line detector |
| CN102589700A (en) * | 2012-02-28 | 2012-07-18 | 武汉大学 | Optical fiber detecting probe head for portable raman spectrometer |
| CN103822910A (en) * | 2012-11-16 | 2014-05-28 | 福州高意通讯有限公司 | Raman probes for miniature Raman spectrometer |
| CN203758916U (en) * | 2014-02-24 | 2014-08-06 | 南京派光信息技术有限公司 | Portable adjustable Raman probe |
| CN104458697A (en) * | 2014-12-08 | 2015-03-25 | 成都鼎智汇科技有限公司 | Portable raman spectrum explosive identifier |
-
2015
- 2015-06-24 CN CN201510353851.9A patent/CN105044075B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915742A (en) * | 2010-08-10 | 2010-12-15 | 北京路源光科技有限公司 | Raman technology based biodiesel on-line detector |
| CN102589700A (en) * | 2012-02-28 | 2012-07-18 | 武汉大学 | Optical fiber detecting probe head for portable raman spectrometer |
| CN103822910A (en) * | 2012-11-16 | 2014-05-28 | 福州高意通讯有限公司 | Raman probes for miniature Raman spectrometer |
| CN203758916U (en) * | 2014-02-24 | 2014-08-06 | 南京派光信息技术有限公司 | Portable adjustable Raman probe |
| CN104458697A (en) * | 2014-12-08 | 2015-03-25 | 成都鼎智汇科技有限公司 | Portable raman spectrum explosive identifier |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290300A (en) * | 2016-08-04 | 2017-01-04 | 同方威视技术股份有限公司 | Portable raman spectrometer |
| CN106323419A (en) * | 2016-09-30 | 2017-01-11 | 天津市誉航润铭科技发展有限公司 | Novel liquid level sensor |
| CN109507124A (en) * | 2018-12-01 | 2019-03-22 | 湖北理工学院 | A kind of plug-in type liquid molten steel composition device for fast detecting |
| CN109730640A (en) * | 2019-01-08 | 2019-05-10 | 北京信息科技大学 | Raman spectroscopy measurement probe based on fiber bragg grating |
| CN110006865A (en) * | 2019-04-10 | 2019-07-12 | 南京诺源医疗器械有限公司 | Hand-held laser fluorescence spectrum probe assembly |
| WO2021011470A1 (en) * | 2019-07-12 | 2021-01-21 | Massachusetts Institute Of Technology | Systems and methods for stochastically modulated raman spectroscopy |
| US20220136974A1 (en) * | 2019-07-12 | 2022-05-05 | Massachusetts Institute Of Technology | Systems and methods for stochastically modulated raman spectroscopy |
| US11977030B2 (en) * | 2019-07-12 | 2024-05-07 | Massachusetts Institute Of Technology | Systems and methods for stochastically modulated Raman spectroscopy |
| CN115420382A (en) * | 2022-08-16 | 2022-12-02 | 元珵科技(北京)有限公司 | Raman probe and working system and working method thereof |
| CN115420382B (en) * | 2022-08-16 | 2024-03-12 | 元珵科技(北京)有限公司 | Raman probe, working system and working method thereof |
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