CN85200370U - Laser powermeter responded to all wavelengths - Google Patents
Laser powermeter responded to all wavelengths Download PDFInfo
- Publication number
- CN85200370U CN85200370U CN 85200370 CN85200370U CN85200370U CN 85200370 U CN85200370 U CN 85200370U CN 85200370 CN85200370 CN 85200370 CN 85200370 U CN85200370 U CN 85200370U CN 85200370 U CN85200370 U CN 85200370U
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- power meter
- utility
- model
- laser power
- responded
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model relates to a novel laser power meter responded to all wavelengths. Graphite emulsion is coated on an absorption surface facing incident light on an anode aluminum oxide sheet. The back side of a light surface is plated with fifteen pairs of thermoelements by a vacuum evaporation plating method and is connected with an amplifying circuit. The utility model can be made into a laser power meter for measuring the grade of mill watt to the grade of scores of watts. The power response time of the power meter is less than 1s, and the sensitivity is above 18 mv/w, so the power meter can be used for measuring the laser power from ultraviolet to an infrared spectrum region and can also be used for supervising the fast change of power.
Description
The utility model belongs to surveying instrument.
The detecting element that general laser powermeter uses is neutral absorber.The long-time use of blacking layer faded easily, its sensitivity is reduced, and absorption coefficient is little, and the response time is long, is not easy to be used for that monitoring power is fast changes and the adjustment resonator cavity.Referring to US Patent No 3596514.
The purpose of this utility model is that the detecting element to laser powermeter improves, and has promptly improved the sensitivity of power meter and has shortened the response time again.
Fig. 1 is that power meter receives a synoptic diagram.1 is heat radiator among the figure, the 2nd, and anchor clamps, the 3rd, housing, the 4th, detecting element, the 5th, pole, the 6th, base, the 13rd, lead riser.The 15th, light inlet.
Fig. 2 is a power meter amplifier-chain block scheme.7 is operational amplifiers among the figure, the 8th, and A-D interchanger, the 9th, digital watch.
Fig. 3 is the detecting element front schematic view, and 10 is aluminium flakes among the figure, the 11st, and titanium coating, the 12nd, bismuth coating, the 13rd, lead riser.
Fig. 4 is the side view of detecting element, and 14 is aquadag coatings among the figure.
Characteristics of the present utility model are detecting element flake aluminums (10) through anodized, thick 0.1 millimeter-0.3 millimeter of sheet. Its thickness of oxidation film 10-20 micron. Towards the absorbing surface of incident light, corrosion treatment has been done earlier on the surface, scribbles aquadag layer (14) to improve the light quantity that absorbs again. At the back side of sensitive surface, plate 15 pairs of thermocouples with the method for vacuum evaporation. The material of thermocouple is titanium and bismuth or antimony and bismuth. Can plate earlier titanium and plate again bismuth. Or plate earlier antimony and plate again bismuth. The thickness of thermocouple is the 0.5-1.5 micron. Thermocouple is arranged in radial, and two kinds of thermocouple materials are mutual series connection, produces the electromotive force of addition. The hot junction of thermocouple is distributed in diameter on about 8 millimeters first week, and cold junction is distributed in diameter on about 28 millimeters first week. Cold junction contacts with the shell (3) of laser power meter Receiver. Utilize the big thermal capacity of shell that cold junction is kept at room temperature. The operation principle of brief description laser power meter. Light quantity is passed through light inlet (15) to detecting element (4), produce thermoelectrical potential at detecting element. Thermoelectrical potential is delivered to operational amplifier (7) by lead riser (13), delivers to A-D converter (8) after signal is amplified and upward analog signal conversion is become data signal, demonstrates the laser power of surveying in digital watch (9). Can measure from the laser power of milliwatt level to tens watt level.
The highly sensitive 18mV/W of the utility model, the response time is short≤1 second, and the laser power on can measuring from the ultraviolet to the infrared spectral region also can be used for the fast variation of monitoring power.
Claims (3)
1, to form feature of the present utility model be receiving element to the fast time response at full spectral laser powermeter with anodised aluminium flake (10) by heat radiator (1), anchor clamps (2), housing (3), detecting element (4), pole (5), base (6), operational amplifier (7) a-d converter (8) and digital watch (9), one side scribbles aquadag (14), and another side is coated with 15 pairs of thermopairs.
2, it is characterized in that by the described laser powermeter of claim 1 material of 15 pairs of thermopairs is titanium and bismuth or bismuth and antimony.
3, it is characterized in that by claim 1 or 2 described laser powermeters the thickness of thermopair is the 0.5-1.5 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85200370 CN85200370U (en) | 1985-04-01 | 1985-04-01 | Laser powermeter responded to all wavelengths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85200370 CN85200370U (en) | 1985-04-01 | 1985-04-01 | Laser powermeter responded to all wavelengths |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85200370U true CN85200370U (en) | 1985-09-10 |
Family
ID=4796733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85200370 Pending CN85200370U (en) | 1985-04-01 | 1985-04-01 | Laser powermeter responded to all wavelengths |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85200370U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465594C (en) * | 2006-03-23 | 2009-03-04 | 上海理工大学 | Electronic calibrating thermal electron-releasing radiometer with ultraviolet reinforcing |
| CN102243099A (en) * | 2011-04-11 | 2011-11-16 | 天津滨海华医光电技术有限公司 | Laser spot power density testing device |
| CN104792413A (en) * | 2015-03-25 | 2015-07-22 | 北京光电技术研究所 | Laser power meter |
| CN107677387A (en) * | 2017-09-19 | 2018-02-09 | 合肥国轩高科动力能源有限公司 | Device and method for measuring laser temperature of Raman spectrometer |
-
1985
- 1985-04-01 CN CN 85200370 patent/CN85200370U/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465594C (en) * | 2006-03-23 | 2009-03-04 | 上海理工大学 | Electronic calibrating thermal electron-releasing radiometer with ultraviolet reinforcing |
| CN102243099A (en) * | 2011-04-11 | 2011-11-16 | 天津滨海华医光电技术有限公司 | Laser spot power density testing device |
| CN104792413A (en) * | 2015-03-25 | 2015-07-22 | 北京光电技术研究所 | Laser power meter |
| CN107677387A (en) * | 2017-09-19 | 2018-02-09 | 合肥国轩高科动力能源有限公司 | Device and method for measuring laser temperature of Raman spectrometer |
| CN107677387B (en) * | 2017-09-19 | 2020-05-26 | 合肥国轩高科动力能源有限公司 | Device and method for measuring laser temperature of Raman spectrometer |
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