CN105424320A - Device for high-precision testing of output power stability of wide-spectrum light source - Google Patents
Device for high-precision testing of output power stability of wide-spectrum light source Download PDFInfo
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- CN105424320A CN105424320A CN201510746027.XA CN201510746027A CN105424320A CN 105424320 A CN105424320 A CN 105424320A CN 201510746027 A CN201510746027 A CN 201510746027A CN 105424320 A CN105424320 A CN 105424320A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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Abstract
The invention discloses a device for high-precision testing of the output power stability of a wide-spectrum light source, and the device includes an optical filter, detectors, an amplification circuit, a data acquisition circuit and a display circuit. The optical filter filters light emitted by a wide-spectrum light source to be tested, light of a certain wavelength is selected to enter the detector, the detectors convert optical signals into current signals, the current signals are fed into the amplification circuit and are converted into voltage signals through I/V conversion, the voltage signals are amplified and then transmitted to the data acquisition circuit, the data acquisition circuit performs lowpass filtering and AD conversion on the voltage signals to convert analog signals into digital signals, the digital signals are displayed and recorded on the display circuit, and according to recorded optical power numerical values, the optical power stability of the wide-spectrum light source is obtained. The device provided by the invention adopts three optical detectors to form optical trap type detectors, and light is reflected among the three detectors for multiple times, so that the reflectivity is reduced, thereby improving the responsivity and precision of the detectors.
Description
Technical field
The present invention relates to a kind of high precision wide range light source output power Stabilily parameter device.
Background technology
The broad spectrum light source such as deuterium lamp and halogen tungsten lamp is the Ordinary Light Sources Have carrying out spectral analysis, and deuterium lamp and halogen tungsten lamp combinationally use the spectral analysis of the ultraviolet that can realize material, visible, near-infrared band, are also widely used in ultraviolet-visible spectrophotometer.The light output stability of broad spectrum light source is an important indicator, it directly has influence on the accuracy of spectral analysis test, the degree of stability of current wide spectrum light source can reach very high degree, the L10290 output of products power peak-to-peak value fluctuation of such as Japanese Bin Song company is 0.004%, and the D-2000 output of products power peak-to-peak value fluctuation of Ocean Optics of the U.S. is 0.005%.How the luminous power output stability of its product is verified that becoming light source checks and accepts and difficult problem when detecting.
Apparent, adopt light power meter can measurement light source output power, by measuring the Stability index can measuring light source for a long time, but, general light power meter cannot meet the requirement of high stability light source index test due to the restriction of its detector measuring accuracy, if the uncertainty of measurement of the 918D-ST series detector of Newport company of the U.S. is between 2%-4%, and is easily subject to the impact of surrounding environment light when testing, measuring error is too large, cannot accurately measure.
Existing wide spectrum light source power stability method of testing has difficulties when stable testing degree index is 0.005%, and common photodetector is because the restriction of its uncertainty of measurement, and the fluctuation of himself is greater than light source stability index, cannot test.Adopt the metering system of low temperature radiometer, need to open refrigeration plant for a long time, light path debugging is loaded down with trivial details, and efficiency is low, costly.Adopt the indirect measure of test drive degree of stability, need to take machine survey crew apart and be subject to high-voltage electric shock danger, dangerous.
Paper " Calibration of Infrared Radiation based on low temperature radiometer " (optical standard and test, 62-67 page, 2007.44 (4)) point out in optical radiation measurement, also usually use low temperature radiometer to carry out radiation calibration to light source light power, low temperature radiometer measures at visible light wave range the precision that luminous power can reach 0.005%-0.02%, but low temperature radiometer need be operated in high vacuum, under the condition of ultralow temperature, require high to laboratory environment condition, consider the impact that heat radiation gentle miscarriage in temperature field is raw, in optical system for testing, optical element is more, take into full account the scattering of light beam, reflection etc., adjust and improperly will introduce extra error, when power stability is tested, efficiency is low, costly.
Paper " development of the multi-functional deuterium lamp constant-current supply of a kind of high stability " (optical instrument, 23-27 page, 1991.13 (5)) point out to there is following relation between the electric current I of the wide spectrum light source such as deuterium lamp, halogen tungsten lamp and the radiation flux Φ launched: (I
2/ I
1)
y=Φ
2/ Φ
1, in formula, I
1for initial current, I
2for the electric current after change; Φ
1be and I
1corresponding radiation flux, Φ
2be and I
2corresponding radiation flux; Y is the arbitrary constant (depending on the inflation situation of wide spectrum light source) between 6.05 ~ 6.75, if the fluctuation of source device output optical power peak-to-peak value is 5 × 10
-5within, then require that power drives current fluctuation is 5 × 10
-6within, therefore propose to measure the fluctuation of driving power electric current to replace the stability of optical output power.First method according to this indirectly testing have ignored the impact of light-source structure itself, such as light-source temperature fluctuation, the change of optical mirror slip transmitance etc., test inaccurate, secondly general light source does not all have the port of test drive, instrument need be taken apart when measuring current is connected in circuit by measurement mechanism, and test loaded down with trivial details, efficiency is low, can more than 300V be reached for its exciting voltage of deuterium lamp, take instrument test apart dangerous.
Summary of the invention
The present invention is in order to solve the problem, propose a kind of high precision wide range light source output power Stabilily parameter device, this device adopts three photodetector combined test luminous powers, detector responsivity is increased, improve signal to noise ratio (S/N ratio), thus improve measuring accuracy, wide spectrum light source high stability index test can be realized.
To achieve these goals, the present invention adopts following technical scheme:
A kind of high precision wide range light source output power Stabilily parameter device, comprise optical filter, detector, amplifying circuit, data acquisition circuit and display circuit, wherein: optical filter filters the light that wide spectrum light source to be measured sends, the light of a certain wavelength is selected to enter detector, light signal is converted into current signal by detector, send into amplifying circuit, by I/V conversion, current signal is changed into voltage signal, and pass to data acquisition circuit after being amplified by voltage signal, voltage signal is carried out low-pass filtering to data acquisition circuit and AD conversion converts simulating signal to digital signal, display circuit shows, record, according to the luminous power numerical value of record, obtain the light power stabilising degree of wide spectrum light source.
Described detector, comprise three photo-detectors, be respectively the first photo-detector, the second photo-detector and the 3rd photo-detector, wherein, light is after the reflection of the first photo-detector, the second photo-detector and the 3rd photo-detector, returned by the 3rd photo-detector, the second photo-detector and the former road of the first photo-detector again, through multiple reflections, reduce the reflectance of light.
Described first photo-detector and the 3rd photo-detector perpendicular, the place plane of the second photo-detector and the first photo-detector and the 3rd photo-detector is all placed in 45 °.
Luminous power numerical value in described display circuit record a period of time, respectively with the bound of the positive and negative values of peak power and the difference of minimum power and the ratio of the twice average power degree of stability that is luminous power.
Described display circuit converts digital signal to analog voltage signal by DA conversion, and shows in real time and record.
Beneficial effect of the present invention is:
(1) three photo-detector composition ligh trap formula detectors are adopted, reflectance is reduced by light multiple reflections between three detectors, improve detector responsivity, thus improve measuring accuracy, the light signal detected is by back-end circuit process, complete opto-electronic conversion and record, realize the test of wide spectrum light source high stability index;
(2) proving installation light path of the present invention is simple compared with adopting the mode of low temperature radiometer, and can carry out at ambient temperature without the need to refrigeration, efficiency is high, expense is low.
Accompanying drawing explanation
Fig. 1 is wide spectrum light source output power stability proving installation block diagram;
Fig. 2 is ligh trap formula panel detector structure figure.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
A new light source power Stabilily parameter device, it is shown the parts such as writing circuit in real time formed by optical filter, ligh trap formula detector, programmable amplifying circuit, data acquisition circuit, data, and its test block diagram as shown in Figure 1.The light that wide spectrum light source sends after filtration mating plate filters, the light of a certain wavelength is selected to enter ligh trap formula detector, after photoelectric conversion, light signal is changed into current signal, electric signal enters programmable amplifying circuit, by I/V conversion, current signal is changed into voltage signal, and by the prime amplifier of low noise, voltage signal is amplified to suitable multiple and enters data acquisition circuit, low-pass filtering is carried out and AD conversion converts simulating signal to digital signal in data acquisition circuit, then, signal enter data show in real time writing circuit by DA conversion convert digital signal to analog voltage signal, and show in real time and record.Within a period of time, record the luminous power numerical value recorded, pass through formula
calculate the light power stabilising degree of wide spectrum light source.
Wherein, the compound photo-detector that ligh trap formula detector adopts three photo-detectors to form according to the combination of certain dimensional orientation, as shown in Figure 2, photo-detector 1 is vertical with photo-detector 3 to be placed, detector 2 and detector 1, detector 3 respectively angle at 45 ° is placed, incident light is irradiated on detector 1 with 45 ° of incident angles, then reflex on detector 2, incident angle is similarly 45 °, impinge perpendicularly on detector 3 after detector 2 reflects, then light beam reflexes to again on detector 2 and detector 1, by multiple reflections between detector, the reflectance of measuring beam reduces greatly, the reflectance of general photo-detector is 0.3, light is at detector 1, 2, 5 secondary reflections have been carried out between 3, its reflectance is 0.00243.Reduce 2 orders of magnitude, detector responsivity is increased, thus improves measuring accuracy.Its uncertainty of measurement of empirical tests reaches 0.016%.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (5)
1. a high precision wide range light source output power Stabilily parameter device, it is characterized in that: comprise optical filter, detector, amplifying circuit, data acquisition circuit and display circuit, wherein: optical filter filters the light that wide spectrum light source to be measured sends, the light of a certain wavelength is selected to enter detector, light signal is converted into current signal by detector, send into amplifying circuit, by I/V conversion, current signal is changed into voltage signal, and pass to data acquisition circuit after being amplified by voltage signal, voltage signal is carried out low-pass filtering to data acquisition circuit and AD conversion converts simulating signal to digital signal, display circuit shows, record, according to the luminous power numerical value of record, obtain the light power stabilising degree of wide spectrum light source.
2. a kind of high precision wide range light source output power Stabilily parameter device as claimed in claim 1, it is characterized in that: described detector, comprise three photo-detectors, be respectively the first photo-detector, the second photo-detector and the 3rd photo-detector, wherein, light after the reflection of the first photo-detector, the second photo-detector and the 3rd photo-detector, then is returned by the 3rd photo-detector, the second photo-detector and the former road of the first photo-detector, through multiple reflections, reduce the reflectance of light.
3. a kind of high precision wide range light source output power Stabilily parameter device as claimed in claim 1, it is characterized in that: described first photo-detector and the 3rd photo-detector perpendicular, the place plane of the second photo-detector and the first photo-detector and the 3rd photo-detector is all placed in 45 °.
4. a kind of high precision wide range light source output power Stabilily parameter device as claimed in claim 1, it is characterized in that: the luminous power numerical value in described display circuit record a period of time, respectively with the bound of the positive and negative values of peak power and the difference of minimum power and the ratio of the twice average power degree of stability that is luminous power.
5. a kind of high precision wide range light source output power Stabilily parameter device as claimed in claim 1, is characterized in that: described display circuit converts digital signal to analog voltage signal by DA conversion, and shows in real time and record.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510746027.XA CN105424320A (en) | 2015-11-04 | 2015-11-04 | Device for high-precision testing of output power stability of wide-spectrum light source |
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| CN201510746027.XA CN105424320A (en) | 2015-11-04 | 2015-11-04 | Device for high-precision testing of output power stability of wide-spectrum light source |
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| CN105424320A true CN105424320A (en) | 2016-03-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801602A (en) * | 2018-06-20 | 2018-11-13 | 中国人民解放军国防科技大学 | Device and method for reducing low-frequency noise in dual-beam optical trap system |
| CN110470384A (en) * | 2019-06-25 | 2019-11-19 | 盐城华昱光电技术有限公司 | A kind of luminescent detection system and detection method of linear light sorurce |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856899A (en) * | 1985-12-20 | 1989-08-15 | Yokogawa Electric Corporation | Optical frequency analyzer using a local oscillator heterodyne detection of incident light |
| CN2643297Y (en) * | 2003-02-22 | 2004-09-22 | 中国科学院安徽光学精密机械研究所 | High precision spectral radiance luminance meter |
| CN101858822A (en) * | 2010-05-14 | 2010-10-13 | 西安电子科技大学 | He-Ne laser frequency stability measuring system and measuring method thereof |
| CN102384836A (en) * | 2010-09-01 | 2012-03-21 | 中国科学院光电研究院 | Laser multi-parameter real-time measuring device |
-
2015
- 2015-11-04 CN CN201510746027.XA patent/CN105424320A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856899A (en) * | 1985-12-20 | 1989-08-15 | Yokogawa Electric Corporation | Optical frequency analyzer using a local oscillator heterodyne detection of incident light |
| CN2643297Y (en) * | 2003-02-22 | 2004-09-22 | 中国科学院安徽光学精密机械研究所 | High precision spectral radiance luminance meter |
| CN101858822A (en) * | 2010-05-14 | 2010-10-13 | 西安电子科技大学 | He-Ne laser frequency stability measuring system and measuring method thereof |
| CN102384836A (en) * | 2010-09-01 | 2012-03-21 | 中国科学院光电研究院 | Laser multi-parameter real-time measuring device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801602A (en) * | 2018-06-20 | 2018-11-13 | 中国人民解放军国防科技大学 | Device and method for reducing low-frequency noise in dual-beam optical trap system |
| CN110470384A (en) * | 2019-06-25 | 2019-11-19 | 盐城华昱光电技术有限公司 | A kind of luminescent detection system and detection method of linear light sorurce |
| CN110470384B (en) * | 2019-06-25 | 2021-09-14 | 人民百业科技有限公司 | Light emitting detection system and detection method of linear light source |
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