CN105510237B - A kind of multifunctional optical pump probe instrument for optical pumping detection experiment - Google Patents
A kind of multifunctional optical pump probe instrument for optical pumping detection experiment Download PDFInfo
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- CN105510237B CN105510237B CN201610041300.3A CN201610041300A CN105510237B CN 105510237 B CN105510237 B CN 105510237B CN 201610041300 A CN201610041300 A CN 201610041300A CN 105510237 B CN105510237 B CN 105510237B
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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Abstract
The present invention relates to a kind of multifunctional optical pump probe instrument for optical pumping detection experiment, including beam splitting chip, it is provided with pumping light regulator and detection light regulator on the outside of beam splitting chip, is equipped at pumping light regulator and the laser reflection for detecting light regulator and closes beam piece.Multifunctional optical pump probe instrument of the invention, it is integrated with beam splitting chip, closes the function element such as beam piece, delayer, regulation of energy device, polarization adjuster, ellipse inclined adjuster, needed for the adjustings of parameters such as time delay, beam energy size, the ellipse inclined rate of light beam and the light beam polarization direction in optical pumping detection experiment can be met, to realize multi-functional optical pumping detection.The configuration of the present invention is simple, applied widely, the teaching demonstration that the laser beam of output can be not only used for the pump probe of experiment, and can be used for testing.
Description
Technical field
The present invention is a kind of multi-functional optical pumping survey meter for optical pumping detection experiment, can meet optics pump
Needed for the adjustings of parameters such as time delay, beam energy size, the ellipse inclined rate of light beam and light beam polarization direction in the detection experiment of Pu,
To realize multi-functional optical pumping detection.
Background technique
In pump probe（pump-and-probe）In technology, ultrashort laser is divided into pump light and detection light two through beam splitting chip
Shu Guang, generally than detecting light intensity, the time delay of two-beam is controlled pump light by delayer.At sample to be tested, pump light
It spatially needs to be completely coincident with detection light.Under normal conditions, the spot diameter of pump light needs wideer than detection, allows detection
The light light beam that is excited is completely covered.Strong pump light excites sample, this produces the variation of state behavior, weak spy in the sample
Light is surveyed to detect this shock wave.The temporal evolution function of sample excitation state can pass through the delay time of change two-beam
To obtain.Pump probe technology is commonly used to research with properties：Reflectivity, transmissivity, Raman scattering and absorption etc. of inducting.In light
In the research for learning experiment, pump probe technology is had been widely used.Thus the present invention generates.
Summary of the invention
For the above-mentioned technical problem of the prior art, the object of the present invention is to provide one kind for optical pumping detection experiment
Multifunctional optical pump probe instrument, structure is simple, applied widely, and the pumping that the laser beam of output can be not only used for experiment is visited
The teaching demonstration surveyed, and can be used for testing.
In order to achieve the above objectives, the present invention is achieved by the following technical solutions：
A kind of multifunctional optical pump probe instrument for optical pumping detection experiment, including beam splitting chip, the beam splitting chip
Outside be provided with pumping light regulator and detection light regulator, it is described pumping light regulator and detect light regulator laser it is anti-
It penetrates place and is equipped with conjunction beam piece.
The pumping light regulator includes adjacent pump energy adjuster, pumping optical time delay unit, pumping light polarization
Adjuster and the ellipse inclined adjuster of pump light, for the beam splitting chip by laser reflection to pump energy adjuster, the pump light is ellipse
Laser reflection is extremely closed beam piece by inclined adjuster.
The detection light regulator includes adjacent detection light energy adjuster, detection optical time delay unit, detection light polarization
Adjuster, the ellipse inclined adjuster of detection light and total reflective mirror, laser reflection is extremely detected light energy adjuster by the beam splitting chip, described complete
Laser reflection is extremely closed beam piece by anti-mirror.
The pump energy adjuster and detection light energy adjuster includes half-wave plate and the polarizer.
The pumping optical time delay unit and detection optical time delay unit is mounted on straight line by two mutual total reflective mirrors at right angle and puts down
It is formed in moving stage.
The pump light polarization adjuster and detection light polarization adjuster by half wave plate group at.
The ellipse inclined adjuster of the pump light and the detection ellipse inclined adjuster of light are made of quarter-wave plate.
The conjunction beam scheme closed beam piece and use small-angle incidence, the incidence angle is less than 3 °.
The outside of the beam splitting chip is equipped with incident collimating eyelet, and the outside for closing beam piece is equipped with outgoing collimating eyelet.
A kind of laser adjusting method of the multifunctional optical pump probe instrument for optical pumping detection experiment, incident laser
After beam is via incident collimating eyelet, it is divided into pump light and detection two beam laser of light through beam splitting chip, the pump light and detection light are again
Respectively pass through regulation of energy device, delayer, polarization adjuster and ellipse inclined adjuster, be finally combined by conjunction beam piece it is a branch of, via go out
Penetrate collimating eyelet output.
Beneficial effects of the present invention are as follows：
The present invention for optical pumping detection experiment multifunctional optical pump probe instrument, be integrated with beam splitting chip, close beam piece,
The function element such as delayer, regulation of energy device, polarization adjuster, ellipse inclined adjuster can meet in optical pumping detection experiment
Needed for the adjusting of parameters such as the ellipse inclined rate of time delay, beam energy size, light beam and light beam polarization direction, to realize multi-functional
Optical pumping detection.
The configuration of the present invention is simple, applied widely, the laser beam of output can be not only used for the pump probe of experiment, and can be used for
The teaching demonstration of experiment.
Detailed description of the invention
Fig. 1 is multifunctional optical pump probe instrument schematic device of the present invention for optical pumping detection experiment；
Fig. 2 is the device figure of the embodiment of the present invention 1, applies the teaching demonstration in two-way optical interference experiment；
Fig. 3 and Fig. 4 is the demonstrating effect figure of the embodiment of the present invention 1；
Wherein, 1 is incident collimating eyelet；2 be beam splitting chip；3 be to close beam piece；4 be pumping optical time delay unit；5 be that detection light prolongs
When device；6 be pump energy modulator；7 be detection light energy modulator；8 be pump light polarization adjuster；9 be that detection light is inclined
Shake adjuster；10 be the ellipse inclined adjuster of pump light；11 be the detection ellipse inclined adjuster of light；12 be total reflective mirror；13 be that outgoing collimation is small
Hole；14 be incoming laser beam；15 be pump light；16 be detection light；17 be He-Ne Lasers；18 be concavees lens；19 be spherical lens；
20 be frosted glass optical screen.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below, but protection scope of the present invention is not limited to
This.
As shown in Figure 1, multifunctional optical pump probe instrument of the present invention for optical pumping detection experiment, including beam splitting chip
2, the outside of beam splitting chip 2 is provided with pumping light regulator and detection light regulator, pumps light regulator and detects light regulator
It is equipped at laser reflection and closes beam piece 3, the outside of beam splitting chip 2 is equipped with incident collimating eyelet 1, and it is quasi- that the outside of conjunction beam piece 3 is equipped with outgoing
Straight aperture 13.
Pumping light regulator in the present invention includes adjacent pump energy adjuster 6, pumping optical time delay unit 4, pumping
Light polarization adjuster 8 and the ellipse inclined adjuster 10 of pump light, beam splitting chip 2 is by laser reflection to pump energy adjuster 6, pump light
Laser reflection is extremely closed beam piece 3 by ellipse inclined adjuster 10.
Detection light regulator in the present invention includes adjacent detection light energy adjuster 7, detection optical time delay unit 5, detection
Light polarization adjuster 9, the ellipse inclined adjuster 11 of detection light and total reflective mirror 12, beam splitting chip 2 adjust laser reflection to detection light energy
Laser reflection is extremely closed beam piece 3 by device 7, total reflective mirror 12.
Pump energy adjuster 6 and detection light energy adjuster 7 in the present invention, can including half-wave plate and the polarizer
Cooperate the polarizer again by rotatable halfwave plate to realize the adjusting of laser energy size, the saturating vibration direction of polarization direction and the polarizer
Angle theta determine this Shu Guang penetrate energy, therefore rotatable halfwave plate cooperates the polarizer that can adjust light beam again
Energy size.
Pumping optical time delay unit 4 and detection optical time delay unit 5 in the present invention are mounted on by two mutual total reflective mirrors at right angle
It is formed on rectilinear translation platform.
Pump light polarization adjuster 8 in the present invention and detection light polarization adjuster 9 are by half wave plate group at can pass through rotation
Turn half-wave plate come when realizing the change of laser polarization direction, polarization direction and the half-wave plate optical axis folder angle α, output polarised light will turn
Cross 2 angles α.
The ellipse inclined adjuster 10 of pump light and the detection ellipse inclined adjuster 11 of light in the present invention are made of quarter-wave plate,
The adjusting of pump light ellipse inclined adjuster 10 and the detection ellipse inclined adjuster 11 of light can be realized by rotation quarter-wave plate.Beam splitting
The pump light of piece 2/detection light energy, can than that can select according to actual needs with the pump light/detection light energy ratio for closing beam piece 3
Arbitrary disposition.
Beam piece 3 is closed using the conjunction beam scheme of small-angle incidence in the present invention, and incidence angle avoids laser polarization ginseng less than 3 °
The phenomenon of beam ratio example shakiness is closed caused by when several and laser ellipsometric parameter is adjusted.Because closing reflectivity or the transmissivity meeting of beam piece 3
Change with the polarization direction of incident laser and the variation of ellipse deviator, to cause to export ratio when pump light and detection combiner
Example is unstable, and the present invention closes at small angle beam scheme and reduces the P-polarization component of incident light and the difference of S-polarization component significantly, to keep away
The situation of beam ratio example shakiness is closed caused by when exempting from laser polarization and ellipsometric parameter adjusting.
In the present invention, after incoming laser beam 14 is via incident collimating eyelet 1, divide through beam splitting chip 2 for pump light and detection light
Two beam laser, pump light and detection light pass through regulation of energy device, delayer, polarization adjuster and ellipse inclined adjuster respectively again, most
Be combined into afterwards by conjunction beam piece 3 it is a branch of, via outgoing collimating eyelet 13 export.
Embodiment 1
As shown in Fig. 2, being applied to the teaching demonstration of two-way optical interference experiment, incident collimating eyelet 1 is that aperture can darkening
Door screen；2 energy splitting ratio of beam splitting chip is 1:1；Closing 3 energy of beam piece and closing beam ratio is 1:1；Being emitted collimating eyelet 13 is that aperture can darkening
Door screen；17 output wavelength of He-Ne Lasers is 632 nm；The effect of concavees lens 18 is dispersion laser transmitting；The effect collimation of spherical lens 19 swashs
Beam emissions；The effect of frosted glass optical screen 20 is to receive and show interference fringe.
In the embodiment 1, we pass through to adjust pump energy modulator 6 and detect light energy modulator 7 first makes
Two-way beam energy is close；Then make two-way light beam by adjusting pump light polarization adjuster 8 and detection light polarization adjuster 9
Polarization direction it is consistent；Make two-way light beam by adjusting the ellipse inclined adjuster 10 of pump light and the detection ellipse inclined adjuster 11 of light again
Ellipse deviator is zero, we just observe clearly interference circle as shown in Figure 3 in this way.If we change any light beam all the way
Energy, polarization direction or ellipse deviator, it finds that interference fringe gradually thickens, or even finally only observe such as Fig. 4 institute
That shows has no the round spot of interference fringe trace.By embodiment 1, student can be allowed to have a profound understanding of the harsh item of interference fringe generation
The two-way light beam of part, i.e. generation interference fringe needs similar energy, identical polarization direction and without ellipse deviator, only this
Sample could generate clearly interference fringe.
Multifunctional optical pump probe instrument of the present invention for optical pumping detection experiment, is integrated with beam splitting chip 2, closes beam piece
3, the function element such as delayer, regulation of energy device, polarization adjuster, ellipse inclined adjuster can meet in optical pumping detection experiment
The adjusting of parameters such as time delay, beam energy size, the ellipse inclined rate of light beam and light beam polarization direction needed for, to realize more function
The optical pumping detection of energy.
The configuration of the present invention is simple, applied widely, the laser beam of output can be not only used for the pump probe of experiment, and can be used for
The teaching demonstration of experiment.
Above-described embodiment is only used for illustrating inventive concept of the invention, rather than the restriction to rights protection of the present invention,
It is all to be made a non-material change to the present invention using this design, protection scope of the present invention should all be fallen into.
Claims (6)
1. a kind of multifunctional optical pump probe instrument for optical pumping detection experiment, it is characterised in that：Including beam splitting chip, institute
It states and is provided with pumping light regulator and detection light regulator on the outside of beam splitting chip, the pumping light regulator and detection light regulator
Laser reflection at be equipped with close beam piece；
The pumping light regulator includes adjacent pump energy adjuster, pumping optical time delay unit, pumping light polarization adjusting
Device and the ellipse inclined adjuster of pump light, the beam splitting chip is by laser reflection to pump energy adjuster, the ellipse inclined tune of pump light
Device is saved by laser reflection to conjunction beam piece；
The detection light regulator includes adjacent detection light energy adjuster, detection optical time delay unit, detection light polarization adjusting
Laser reflection is extremely detected light energy adjuster, the total reflective mirror by device, the ellipse inclined adjuster of detection light and total reflective mirror, the beam splitting chip
By laser reflection to conjunction beam piece；
The pump energy adjuster and detection light energy adjuster includes half-wave plate and the polarizer；
The pumping optical time delay unit and detection optical time delay unit is mounted on rectilinear translation platform by two mutual total reflective mirrors at right angle
Upper composition.
2. the multifunctional optical pump probe instrument for optical pumping detection experiment as described in claim 1, it is characterised in that：Institute
The pump light polarization adjuster stated and detection light polarization adjuster by half wave plate group at.
3. the multifunctional optical pump probe instrument for optical pumping detection experiment as described in claim 1, it is characterised in that：Institute
The ellipse inclined adjuster of the pump light stated and the detection ellipse inclined adjuster of light are made of quarter-wave plate.
4. the multifunctional optical pump probe instrument for optical pumping detection experiment as described in claim 1, it is characterised in that：Institute
The conjunction beam scheme closed beam piece and use small-angle incidence stated, the incidence angle is less than 3 °.
5. the multifunctional optical pump probe instrument for optical pumping detection experiment as described in claim 1, it is characterised in that：Institute
The outside for stating beam splitting chip is equipped with incident collimating eyelet, and the outside for closing beam piece is equipped with outgoing collimating eyelet.
It is visited 6. a kind of multifunctional optical as described in claim 1-5 any claim for optical pumping detection experiment pumps
Survey the laser adjusting method of instrument, it is characterised in that：After incoming laser beam is via incident collimating eyelet, it is divided into pump light through beam splitting chip
With detection two beam laser of light, the pump light and detection light are again respectively by regulation of energy device, delayer, polarization adjuster and ellipse
Inclined adjuster, be finally combined by conjunction beam piece it is a branch of, via outgoing collimating eyelet output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610041300.3A CN105510237B (en) | 2016-01-21 | 2016-01-21 | A kind of multifunctional optical pump probe instrument for optical pumping detection experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610041300.3A CN105510237B (en) | 2016-01-21 | 2016-01-21 | A kind of multifunctional optical pump probe instrument for optical pumping detection experiment |
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| Publication Number | Publication Date |
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| CN105510237A CN105510237A (en) | 2016-04-20 |
| CN105510237B true CN105510237B (en) | 2018-11-30 |
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| CN201610041300.3A Expired - Fee Related CN105510237B (en) | 2016-01-21 | 2016-01-21 | A kind of multifunctional optical pump probe instrument for optical pumping detection experiment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108873360B (en) * | 2018-08-23 | 2023-09-22 | 吉林大学 | High-energy pulse laser external shaping optical path system |
| CN113514399B (en) * | 2021-03-26 | 2024-09-17 | 深圳中科飞测科技股份有限公司 | Detection device and detection method |
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| US7233396B1 (en) * | 2006-04-17 | 2007-06-19 | Alphasniffer Llc | Polarization based interferometric detector |
| CN102706461A (en) * | 2012-05-28 | 2012-10-03 | 中国电子科技集团公司第四十一研究所 | Novel Mach-Zehnder polarized beam splitting interferometer |
| CN103808417A (en) * | 2014-03-05 | 2014-05-21 | 河南师范大学 | Measurement device for femtosecond laser pulse width |
| CN104814716A (en) * | 2015-05-21 | 2015-08-05 | 中国科学院光电研究院 | Laser system and method for detecting biomechanical property of cornea |
| CN205484006U (en) * | 2016-01-21 | 2016-08-17 | 绍兴文理学院 | Multi -functional optical pumping detection instrument |
-
2016
- 2016-01-21 CN CN201610041300.3A patent/CN105510237B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7233396B1 (en) * | 2006-04-17 | 2007-06-19 | Alphasniffer Llc | Polarization based interferometric detector |
| CN102706461A (en) * | 2012-05-28 | 2012-10-03 | 中国电子科技集团公司第四十一研究所 | Novel Mach-Zehnder polarized beam splitting interferometer |
| CN103808417A (en) * | 2014-03-05 | 2014-05-21 | 河南师范大学 | Measurement device for femtosecond laser pulse width |
| CN104814716A (en) * | 2015-05-21 | 2015-08-05 | 中国科学院光电研究院 | Laser system and method for detecting biomechanical property of cornea |
| CN205484006U (en) * | 2016-01-21 | 2016-08-17 | 绍兴文理学院 | Multi -functional optical pumping detection instrument |
Non-Patent Citations (1)
| Title |
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| 脉冲激光频域干涉技术在泵浦探测实验中的应用;翁继东等;《光电工程》;20100430;第37卷(第4期);34-38 * |
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