CN203443667U - Novel laser power meter - Google Patents
Novel laser power meter Download PDFInfo
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- CN203443667U CN203443667U CN201320587733.0U CN201320587733U CN203443667U CN 203443667 U CN203443667 U CN 203443667U CN 201320587733 U CN201320587733 U CN 201320587733U CN 203443667 U CN203443667 U CN 203443667U
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Abstract
Disclosed in the utility model is a novel laser power meter comprising a thermopile type optical power probe and a photodiode type laser power probe. The thermopile type optical power probe and the photodiode type laser power probe are connected by a lead. The thermopile type optical power probe directly detects an average power of incident light; and the photodiode type laser power probe detects scattered light irradiating on a thermopile type detector by the incident light; and a continuous attenuation plate is arranged directly in front of the photodiode type laser power probe. The provided novel laser power meter is designed reasonably; and the instantaneous response characteristic of the thermopile type laser power meter can be obviously improved.
Description
Technical field
The utility model belongs to optical instrument field, and specifically a kind of high power laser light power meter that can respond fast transient change, while being applicable to high power laser light measurement, needs the situation of the instantaneous unexpected variation of detection laser power.
Background technology
Laser powermeter is for testing the power of continuous laser or pulse laser at the instrument of the average power of certain a period of time.Laser powermeter is generally comprised of probe and display device, and laser powermeter probe is divided into thermocouple type, photodiode type according to different principles and material.Thermocouple type laser powermeter becomes heat by thermoelectric pile structure by transform light energy, then is converted to electric signal output, by calibrating the size of accurately measuring laser power.And photodiode type probe is by photodiode, by transform light energy, be directly electric current or voltage signal, then by calibrating the size of accurately measuring laser power.
Each own obvious relative merits of thermocouple type laser power probe and photodiode type: the probe that is usually used in the power test of high power continuous laser is Surface absorption structure laser thermocouple type laser powermeter.Laser thermocouple type laser powermeter Surface absorption material category is more, corresponding different absorption spectrums and different power density damage thresholds.From ultraviolet to far infrared band, all can use, measurement range also can be from mW magnitude to several kW magnitudes, but during such probe measurement CW Laser the response time very slow, conventionally need a few minutes just can reach thermal equilibrium.
Photodiode type laser powermeter probe, conventionally to using wavelength to have certain limitation, such as Si photodiode can only be measured 1 micron conventionally with interior light, be more suitable for measuring lower-powered laser, conventionally can arrive hundreds of mW's by direct detection 1pW, the green glow sheet that has added specific band, can measure 3W conventionally with interior laser.But the response time of photodiode type probe is very fast, and response frequency is very high, as silicon photoelectric diode hundreds of MHz～thousands of MHz, i.e. response time ns magnitude; PIN photodiode
-10GHz, avalanche photodide 100GHz, the response time is ps magnitude.In order to solve the deficiencies in the prior art, the utility model proposes a kind of high power laser light power meter that can respond fast transient change.
Utility model content
For the problems referred to above, the utility model aims to provide a kind of novel laser powermeter.
For realizing this technical purpose, scheme of the present utility model is: a kind of novel laser powermeter, comprises thermocouple type luminous power probe, photodiode type laser power probe; Described thermocouple type luminous power probe is connected by wire with photodiode type laser power probe; The average power of described thermocouple type luminous power probe direct detection incident light; Described photodiode type laser power probe detection incident illumination is mapped to the scattered light on thermocouple type detector; Continuous type attenuator is placed in described photodiode type laser power probe dead ahead.
As preferably, described thermocouple type luminous power probe allows that the power of the continuous laser of detection is greater than 3W, about the response time is minute.
As preferably, described photodiode type laser power probe allows that the scattered light power of detection is in hundreds of mW, and accurately the response time is about ns magnitude, ps magnitude even.
As preferably, described continuous type attenuator is used for controlling and is irradiated to the upper intensity of photodiode probe, allows photodiode probe for linear response district.
As preferably, the signal of described thermocouple type luminous power probe output adopts the output of numeric type gauge outfit, and photodiode type laser power probe adopts pointer type, simulated pointer type gauge outfit or the output of historical track type gauge outfit.
Beneficial effect
The utility model is reasonable in design, has significantly improved the transient response characteristic of thermal reactor type laser powermeter.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of New Laser Powermeter;
Fig. 2 is that linear attenuation sheet guarantees the structural representation of photodiode in linear response district;
Fig. 3 is the structural representation of rotation attenuator assurance photodiode in linear response district;
In figure: thermocouple type luminous power probe 1, photodiode type laser power probe 2, linear attenuation sheet 3, rotation attenuator 4.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
As shown in Figure 1, a kind of novel laser powermeter of the utility model embodiment, comprises thermocouple type luminous power probe 1, photodiode type laser power probe 2; Described thermocouple type luminous power probe 1 is connected by wire with photodiode type laser power probe 2; The pop one's head in average power of 1 direct detection incident light of described thermocouple type luminous power; Described photodiode type laser power probe 2 is surveyed incident illumination and is mapped to the scattered light on thermocouple type detector; Continuous type attenuators are placed in described photodiode type laser power 2 dead aheads of popping one's head in.
As preferably, described thermocouple type luminous power probe 1 allows that the power of the continuous laser of detection is greater than 3W, and the response time is about 1 minute.
As preferably, described photodiode type laser power probe 2 allows that the scattered light power of detection is in hundreds of mW, and accurately the response time is about ns magnitude, ps magnitude even.
As preferably, described continuous type attenuator is used for controlling and is irradiated to intensity on photodiode probe 2, allows photodiode probe 2 for linear response district.
As preferably, the signal of described thermocouple type luminous power probe 1 output adopts the output of numeric type gauge outfit, and photodiode type laser power probe 2 adopts pointer types, simulated pointer type gauge outfit or the output of historical track type gauge outfit.
The above; it is only preferred embodiment of the present utility model; not in order to limit the utility model, any trickle modification that every foundation technical spirit of the present utility model is done above embodiment, be equal to and replace and improve, within all should being included in the protection domain of technical solutions of the utility model.
Claims (3)
1. a novel laser powermeter, comprises thermocouple type luminous power probe, photodiode type laser power probe; It is characterized in that: described thermocouple type luminous power probe is connected by wire with photodiode type laser power probe; Continuous type attenuator is placed in described photodiode type laser power probe dead ahead.
2. a kind of novel laser powermeter according to claim 1, is characterized in that: described thermal reactor type detector model adopts the output of numeric type gauge outfit.
3. a kind of novel laser powermeter according to claim 1, is characterized in that: described photodiode type detector gauge outfit adopts pointer type, simulated pointer type gauge outfit or the output of historical track type gauge outfit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587733.0U CN203443667U (en) | 2013-09-22 | 2013-09-22 | Novel laser power meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587733.0U CN203443667U (en) | 2013-09-22 | 2013-09-22 | Novel laser power meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443667U true CN203443667U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320587733.0U Expired - Fee Related CN203443667U (en) | 2013-09-22 | 2013-09-22 | Novel laser power meter |
Country Status (1)
| Country | Link |
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| CN (1) | CN203443667U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424177A (en) * | 2015-11-04 | 2016-03-23 | 山东省计量科学研究院 | Broad-spectrum calorimetric type optical power meter |
| RU203879U1 (en) * | 2020-09-29 | 2021-04-26 | Федеральное государственное унитарное предприятие "ВСЕРОССИЙСКИЙ НАУЧНО-ИССЛЕДОВАТЕЛЬСКИЙ ИНСТИТУТ ОПТИКО-ФИЗИЧЕСКИХ ИЗМЕРЕНИЙ" (ФГУП "ВНИИОФИ") | DEVICE FOR MEASURING THE AVERAGE POWER OF LASER RADIATION |
| CN114942100A (en) * | 2021-12-31 | 2022-08-26 | 西安交通大学 | Device and method for detecting vacuum degree of vacuum switch |
-
2013
- 2013-09-22 CN CN201320587733.0U patent/CN203443667U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424177A (en) * | 2015-11-04 | 2016-03-23 | 山东省计量科学研究院 | Broad-spectrum calorimetric type optical power meter |
| RU203879U1 (en) * | 2020-09-29 | 2021-04-26 | Федеральное государственное унитарное предприятие "ВСЕРОССИЙСКИЙ НАУЧНО-ИССЛЕДОВАТЕЛЬСКИЙ ИНСТИТУТ ОПТИКО-ФИЗИЧЕСКИХ ИЗМЕРЕНИЙ" (ФГУП "ВНИИОФИ") | DEVICE FOR MEASURING THE AVERAGE POWER OF LASER RADIATION |
| CN114942100A (en) * | 2021-12-31 | 2022-08-26 | 西安交通大学 | Device and method for detecting vacuum degree of vacuum switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Suzhou red blue light electricity Science and Technology Ltd. Document name: Notification to Pay the Fees |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20160922 |
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| CF01 | Termination of patent right due to non-payment of annual fee |