CN107271041A - A kind of laser polarization state measuring instrument - Google Patents
A kind of laser polarization state measuring instrument Download PDFInfo
- Publication number
- CN107271041A CN107271041A CN201710605331.1A CN201710605331A CN107271041A CN 107271041 A CN107271041 A CN 107271041A CN 201710605331 A CN201710605331 A CN 201710605331A CN 107271041 A CN107271041 A CN 107271041A
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- photodetector
- prism
- transmission light
- light source
- separated
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- 230000010287 polarization Effects 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 238000007689 inspection Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J4/00—Measuring polarisation of light
- G01J4/04—Polarimeters using electric detection means
Abstract
The invention discloses a kind of laser polarization state measuring instrument, light source state is sequentially provided with the transmission light path of light source to be measured and changes module, light source state detection module and the first Amici prism, the first polarization splitting prism and the second Amici prism are respectively equipped with two transmission light paths that first Amici prism is separated, the first photodetector and the second photodetector are respectively equipped with two transmission light paths that first polarization splitting prism is separated, phase delay device and the 3rd Amici prism are respectively equipped with two articles of transmission light paths that second Amici prism is separated, the transmission light path of phase delay device is provided with the second polarization splitting prism, the 3rd photodetector and the 4th photodetector are respectively equipped with two articles of transmission light paths that second polarization splitting prism is separated, the first polarizer and the 5th photodetector and the second polarizer and the 6th photodetector are sequentially provided with respectively in two articles of transmission light paths that 3rd Amici prism is separated.Present invention detection more accurate and measurement process is more facilitated.
Description
Technical field
The invention belongs to laser beam polarization state detection means technical field, and in particular to a kind of new pattern laser polarization state is surveyed
Measure instrument.
Background technology
The maximum feature of current laser polarization state detecting instrument is that have a wide range of application, and is the base furtherd investigate to polarization
Plinth type measuring instrument, it has the drawback that：1st, laser polarization state detecting instrument is that single mode is measured, a measuring instrument
A kind of metering system is only provided, lacks contrast reference, precision is relatively low；2nd, metering system is measured using modulation measurement is rotated
Process existence time is poor, it is impossible to realizes and simultaneously and rapidly accurately measures simultaneously；3rd, data acquisition and procession process is still artificial note
Record and computing, easily cause the processing to data and deviation occur, it is impossible to realize collection and the intellectually and automatically of processing procedure, and
And whole measurement process takes a substantial amount of time.
The content of the invention
Present invention solves the technical problem that laser polarization state measuring instrument a kind of simple in construction and reasonable in design is there is provided,
The measuring instrument makes laser beam polarization state detection more accurate, measurement process more facilitate, and can effectively reduce rotation tune
Situations such as measurement for saving and causing is not accurate, measuring speed is slow.
The present invention is to solve above-mentioned technical problem to adopt the following technical scheme that, a kind of laser polarization state measuring instrument, including is treated
Light-metering source placement module and the light source to be measured being arranged in light source placement module to be measured, it is characterised in that：The light source to be measured
Light source state, which is sequentially provided with, in transmission light path changes module, light source state detection module and the first Amici prism, the first light splitting rib
The first polarization splitting prism and the second Amici prism, the first polarization splitting prism are respectively equipped with two transmission light paths that mirror is separated
The first photodetector and the second photodetector are respectively equipped with the two transmission light paths separated, what the second Amici prism was separated
Phase delay device and the 3rd Amici prism are respectively equipped with two articles of transmission light paths, the transmission light path of phase delay device is provided with second
The 3rd photodetector and the 4th are respectively equipped with polarization splitting prism, two articles of transmission light paths that the second polarization splitting prism is separated
The first polarizer is sequentially provided with respectively in photodetector, two articles of transmission light paths that the 3rd Amici prism is separated and the 5th photoelectricity is visited
Survey device and the second polarizer and the 6th photodetector.
Further preferably, it is phase delay device that the light source state, which changes module,.
Further preferably, the phase delay device is the wave plate of λ/2.
The present invention has the advantages that compared with prior art：
1st, three sets of comparison systems make measurement process realize synchronous progress simultaneously in measuring instrument, eliminate time of measuring poor so that
Measurement process is more convenient；2nd, using three sets of measurement of comparison system improvings measurement accuracy of different optical element designs,
Reduce measurement error；3rd, realize the full-automation to signal acquisition and data processing and draw out figure, further lifting
Intellectuality and directly perceivedization of result viewing that the measurement accuracy of laser polarization state measuring instrument is operated with measuring instrument.
Brief description of the drawings
Fig. 1 is the light channel structure schematic diagram of the present invention；
Fig. 2 is that the present invention uses process measurement data figure.
In figure：1st, light source placement module to be measured, 2, light source state change module, 3, light source state detection module, 4, first
Amici prism, the 5, second polarization splitting prism, the 6, first photodetector, the 7, second photodetector, the 8, second Amici prism,
9th, the 3rd Amici prism, the 10, first polarizer, the 11, second polarizer, the 12, the 5th photodetector, the 13, the 6th photodetection
Device, 14, phase delay device, the 15, second polarization splitting prism, the 16, the 3rd photodetector, the 17, the 4th photodetector.
Embodiment
Technical scheme is described in detail with reference to accompanying drawing, with reference to Fig. 1, a kind of laser polarization state measuring instrument, including treat
In light-metering source placement module 1 and the light source to be measured being arranged in light source placement module 1 to be measured, the transmission light path of light source to be measured successively
Provided with light source state change module 2, the Amici prism 4 of light source state detection module 3 and first, the first Amici prism 4 separate two
The first polarization splitting prism 5 and the second Amici prism 8 are respectively equipped with bar transmission light path, what the first polarization splitting prism 5 was separated
Be respectively equipped with the first photodetector 6 and the second photodetector 7 in two transmission light paths, the second Amici prism 8 separate two
Article transmission light path on be respectively equipped with the Amici prism 9 of phase delay device 14 and the 3rd, the transmission light path of phase delay device 14 is provided with
The 3rd photodetection is respectively equipped with second polarization splitting prism 15, two articles of transmission light paths that the second polarization splitting prism 15 is separated
The first polarization is sequentially provided with respectively in the photodetector 17 of device 16 and the 4th, two articles of transmission light paths that the 3rd Amici prism 9 is separated
The photodetector 12 of piece 10 and the 5th and the second polarizer 11 and the 6th photodetector 13.
The present invention is one group of device, three sets of systems, is mounted with that three sets of comparison systems are measured simultaneously in a measuring instrument, energy
The outgoing beam into 6 different angular vibrations from initial incident beam is produced, each two angle composition set of system is formed altogether
Three sets of comparison systems；Three sets of measurement of comparison systems have used different optical elements, and first set has used polarization splitting prism, obtains
Obtained with incident beam into 0 ° and 90 ° of outgoing beam, second set used Amici prism angle different from two polarizer,
Obtain with the incident beam outgoing beam at 45 ° with 135 °, the 3rd set has used the wave plate of λ/2 and polarization splitting prism, acquisition
With incident beam into 60 ° and 150 ° of outgoing beam, three sets of measurement of comparison systems have been respectively adopted different measuring methods, and
Simultaneously and rapidly to measure simultaneously, no time of measuring is poor；Intelligent measure and signal acquiring processing system are devised, using LABVIEW
Program carries out detection calculations to measurement device data, and mainly using formula S=AI, the polarization state for calculating light beam to be measured represents number
Value, and the data of reading are converted, the corresponding planar graph of polarised light is drawn in two-dimensional coordinate system（Circularly polarized light is picture
Go out circle, linearly polarized light be draw it is linear）.
Actually detected process data acquired：Obtained data are detected in 6 photodetectors to be expressed in matrix as：,
Two dimensional image is converted into represent as shown in Figure 2.
Have been shown and described above the general principle of the present invention, principal character and advantage, do not depart from spirit of the invention and
On the premise of scope, the present invention also has various changes and modifications, and these changes and improvements both fall within claimed invention
Scope.
Claims (3)
1. a kind of laser polarization state measuring instrument, including light source placement module to be measured and it is arranged at treating in light source placement module to be measured
Light-metering source, it is characterised in that：Light source state is sequentially provided with the transmission light path of the light source to be measured and changes module, light source state inspection
Survey in module and the first Amici prism, two transmission light paths that the first Amici prism is separated and be respectively equipped with the first polarization splitting prism
With the second Amici prism, the first photodetector and the are respectively equipped with separate two articles transmission light paths of the first polarization splitting prism
Phase delay device and the 3rd light splitting rib are respectively equipped with two photodetectors, two articles of transmission light paths that the second Amici prism is separated
Mirror, the transmission light path of phase delay device is provided with the second polarization splitting prism, two transmission that the second polarization splitting prism is separated
It is respectively equipped with light path in the 3rd photodetector and the 4th photodetector, two articles of transmission light paths that the 3rd Amici prism is separated
The first polarizer and the 5th photodetector and the second polarizer and the 6th photodetector are sequentially provided with respectively.
2. laser polarization state measuring instrument according to claim 1, it is characterised in that：It is phase that the light source state, which changes module,
Position delayer.
3. laser polarization state measuring instrument according to claim 1 or 2, it is characterised in that：The phase delay device is the ripple of λ/2
Piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710605331.1A CN107271041A (en) | 2017-07-24 | 2017-07-24 | A kind of laser polarization state measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710605331.1A CN107271041A (en) | 2017-07-24 | 2017-07-24 | A kind of laser polarization state measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107271041A true CN107271041A (en) | 2017-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710605331.1A Withdrawn CN107271041A (en) | 2017-07-24 | 2017-07-24 | A kind of laser polarization state measuring instrument |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696241A (en) * | 2019-02-22 | 2019-04-30 | 中国科学院物理研究所 | Polarization state detection device, its detection method and application |
| CN112345078A (en) * | 2020-10-27 | 2021-02-09 | 衡阳市智谷科技发展有限公司 | Polarization measurement system based on light wave polarization state |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3931540A1 (en) * | 1989-09-21 | 1991-04-04 | Siemens Ag | Optical polarisation analyser - separates input light into measurement beams which are further divided by polarisation beam dividers before intensity is measured |
| JPH0571923A (en) * | 1991-09-12 | 1993-03-23 | Canon Inc | Polarization analyzing method and thin film measuring apparatus |
| CN200941068Y (en) * | 2006-06-10 | 2007-08-29 | 福建师范大学 | Coherent polarization matrix measuring system |
| CN206959992U (en) * | 2017-07-24 | 2018-02-02 | 河南师范大学 | A kind of laser polarization state measuring instrument |
-
2017
- 2017-07-24 CN CN201710605331.1A patent/CN107271041A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3931540A1 (en) * | 1989-09-21 | 1991-04-04 | Siemens Ag | Optical polarisation analyser - separates input light into measurement beams which are further divided by polarisation beam dividers before intensity is measured |
| JPH0571923A (en) * | 1991-09-12 | 1993-03-23 | Canon Inc | Polarization analyzing method and thin film measuring apparatus |
| CN200941068Y (en) * | 2006-06-10 | 2007-08-29 | 福建师范大学 | Coherent polarization matrix measuring system |
| CN206959992U (en) * | 2017-07-24 | 2018-02-02 | 河南师范大学 | A kind of laser polarization state measuring instrument |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696241A (en) * | 2019-02-22 | 2019-04-30 | 中国科学院物理研究所 | Polarization state detection device, its detection method and application |
| CN109696241B (en) * | 2019-02-22 | 2021-02-26 | 中国科学院物理研究所 | Polarization state detection device, detection method and application thereof |
| CN112345078A (en) * | 2020-10-27 | 2021-02-09 | 衡阳市智谷科技发展有限公司 | Polarization measurement system based on light wave polarization state |
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Application publication date: 20171020 |
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