CN1042857C - Myriajoule/myriawatt level laser energy/power measuring equipment - Google Patents
Myriajoule/myriawatt level laser energy/power measuring equipment Download PDFInfo
- Publication number
- CN1042857C CN1042857C CN 95119405 CN95119405A CN1042857C CN 1042857 C CN1042857 C CN 1042857C CN 95119405 CN95119405 CN 95119405 CN 95119405 A CN95119405 A CN 95119405A CN 1042857 C CN1042857 C CN 1042857C
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- water
- cylindricality
- jacket casing
- laser energy
- absorber
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Abstract
The present invention provides a device for measuring myriad-joule grade laser energy and myriad-watt grade laser power and monitoring the waveform of the myriad-joule grade laser energy and myriad-watt grade laser power. The device is composed of a reverse conical acceptor (8), a cylindrical absorption cavity (6), a differential type thermal couple (14), a photoelectric detecting device (3), an electric heater (7), a water cooling passage (10), etc. A water outlet nozzle (5), a water inlet nozzle (11) and a water returning nozzle (12) arranged on a cylinder sleeve (24) are respectively communicated with a water outlet (16), a water inlet (20) and a water returning hole (18) arranged on the closed end surface of a shell (2) by pipelines. The differential type thermal couple (14), the photoelectric detecting device (3) and the electric heater (7) are respectively connected with an energy measuring port (22), a power measuring port (17) and an electric calibrating port (21) arranged on the closed end surface of the shell (2) by metal conducting wires.
Description
The present invention relates to a kind of device that is used to measure ten thousand burnt level laser energy, myriawatt level laser power and monitors its waveform.
Laser energy meter commonly used both at home and abroad at present, the laser energy of energy measurement below hundred joules only, laser powermeter commonly used can only be measured the following laser power of hectowatt, can not bear the laser of high-energy power density, and energy can not be realized measurement with power on same instrument.External special-purpose measurement high-energy high power density instrument, bore all less (in the 100mm) is not the hypersorption formula, can not measure energy and power simultaneously, can not carry out absolute measurement.
The purpose of this invention is to provide a kind of hypersorption absolute type measurement mechanism that is used to detect ten thousand burnt myriawatt long pulse new laser energy work rates.
The objective of the invention is to finish by following design proposal, receive body 8 and be welded in the cylindricality absorber 6 that back taper receives body 8 outsides coaxially by a back taper, the common back taper cylindricality hypersorption reception cavity of forming, this reception cavity is surrounded by a jacket casing 24, form water-cooling channel 10, liner 4 and rear inner lining 9 before the blind end of the openend of cylindricality absorber 6 and jacket casing 24 is used respectively make the adiabatic supporting of inwall of whole reception cavity and housing 2.In order to bear and measure the high-power light laser of high-energy, adopt back taper to receive body; For reaching hypersorption and the purpose that can measure greater than φ 100mm laser beam, adopt 120～140mn cylinder chamber structure; For ten thousand burnt grade absolute energy and the myriawatt level power that can measure and show tested light beam simultaneously and detect its waveform, adopt difference formula weight heat or temperature sensor to survey design; In order to carry out self calibration, adopt the electric energy that can accurately measure identical to carry out absolute calibration's design with the survey laser pulse width to guarantee accuracy of measurement; In order to have the function of adapted computer run, carried out corresponding calculated machine design of hardware and software.
Advantage of the present invention is can bear and measure the high-energy high power density (greater than 1KJ/kW/cm
2More than) light laser and diameter be the laser beam of 120～140mm; Not only can carry out the absolute measurement of laser energy and power simultaneously and detect its waveform, and can connect computer run, but independent displaying and printing also have self-calibration function; Measured laser energy value and tested laser pulse width (ns-s level) are irrelevant.
Owing to the invention solves the required measurement means problem of modern light laser, won benefit economically.The range ability of also China's laser energy being measured standard simultaneously expands to 10kJ from 0.1kJ.
Description of drawings
Fig. 1--Myriajoule/myriawatt level laser energy/power measuring equipment diagrammatic cross-section.
Fig. 2--be the right view of Fig. 1.
Fig. 3--be the left view of Fig. 1.
Below in conjunction with accompanying drawing enforcement of the present invention is described.
Be made of aluminum or copper and receive body 8 and weld together coaxially with the cylindricality absorbing cavity of making by same material and job operation 6 through the back taper of hyperfine processing, form back taper-cylindricality hypersorption reception cavity, outer cover one jacket casing 24 in the chamber, this jacket casing 24 is screwed on the disk projection on the cylindricality absorbing cavity 6, be encased inside mat insulation 13 between the two, make the whole cavity and the external world be in the heat insulation state.Whole back taper-cylindricality hypersorption reception cavity uses the forward and backward liner of being made by thermal insulation material 4,9 to be bearing on housing 2 inwalls of device, and 2 of housings are supported with forward and backward support 23,19.
The openend black coating of cylindricality absorber 6, top has a hole, settles a photodetector 3 with the hole opposite position, settles hundred pairs of poor formula thermocouples 14 on the cylindricality outer wall equably, their cold junction place column outer wall heat sink 15 on, the hot junction then places the root of disc projection.Receive at cylindricality absorber 6 and back taper on the outer wall of one section of body 8 weld and wind with electric heater 7.Photodetector 3, difference formula thermocouple 14, electric heater 7 usefulness leads are connected with power measurement port one 7, energy measurement port 22 and electric calibration port 21 on housing 2 Closed Ends.There is a faucet 5 the openend top of jacket casing 24, and there are water inlet tap 11 and backwater mouth 12 in the below, and is connected with water delivering orifice 16, water inlet 20 and the water return outlet 18 on pipeline and housing 2 Closed Ends.
Claims (3)
1. Myriajoule/myriawatt level laser energy/power measuring equipment, it is characterized by by back taper and receive body (8) and coaxial welding outside it, bore is the cylindricality absorber (6) of 140mm, form back taper one cylindricality hypersorption reception cavity, this reception cavity surrounded a jacket casing (24), form water-cooling channel (10), on the cylindricality absorber corresponding a disk is housed with the jacket casing openend, mat insulation (13) is housed between jacket casing openend and disk, be with housing (2) in the jacket casing outside, in housing left side central authorities are laser beam inlets (1), on the housing right side, have water delivering orifice (16), water return outlet (18), water inlet (20), power measurement port (17), energy measurement port (22), electricity is proofreaied and correct port (21), in before between cylindricality absorber openend and shell, being with village (4), between the blind end of jacket casing and shell, be with rear inner lining (9), one faucet (5) is arranged above the jacket casing openend, there are water inlet tap (11) and backwater mouth (12) in the below, faucet (5) and water delivering orifice (16), water inlet tap (11) and water inlet (20), backwater mouth (12) is all connected with pipeline with water return outlet (18), above cylindricality absorber inlet end, a perforate is arranged, in the perforate outside photodetector (3) is installed, photodetector (3) has lead to be connected with power measurement port (17), in cylindricality absorber inlet end exterior circumferential 100 pairs of poor formula thermocouples (14) are installed evenly, their cold junction links to each other with heat sink (15), the hot junction links to each other with the outstanding root of cylindricality absorber disk, difference formula thermopair (14) has lead to be connected with energy measurement port (22), uniform winding electrical heating wire (7) on the linkage section outside surface of cylindricality absorber and back taper reception body, electrical heating wire (7) is proofreaied and correct port (21) with electricity has lead to be connected, be provided with fore-stock (23) in the openend bottom of housing, be provided with after-poppet (19) in housings close end bottom.
2. Myriajoule/myriawatt level laser energy/power measuring equipment according to claim 1, it is characterized by described back taper reception body (8) is made of aluminum or copper, surface gold-plating or oxidation processes, male cone (strobilus masculinus) is hyperfine polished surface, described cylindricality absorber (6) is made of aluminum or copper, inlet end inwall black coating, remaining surface are hyperfine polished surface.
3. Myriajoule/myriawatt level laser energy/power measuring equipment according to claim 1 and 2 is characterized by and has the computing machine special purpose interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95119405 CN1042857C (en) | 1995-12-25 | 1995-12-25 | Myriajoule/myriawatt level laser energy/power measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95119405 CN1042857C (en) | 1995-12-25 | 1995-12-25 | Myriajoule/myriawatt level laser energy/power measuring equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1139208A CN1139208A (en) | 1997-01-01 |
| CN1042857C true CN1042857C (en) | 1999-04-07 |
Family
ID=5081999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95119405 Expired - Fee Related CN1042857C (en) | 1995-12-25 | 1995-12-25 | Myriajoule/myriawatt level laser energy/power measuring equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1042857C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100504319C (en) * | 2005-09-27 | 2009-06-24 | 中国人民解放军军事医学科学院放射与辐射医学研究所 | Display for energy and power of laser |
| CN103398785B (en) * | 2013-07-26 | 2015-10-28 | 西北核技术研究所 | Based on the energy measurement of high energy laser measurement mechanism of rotary absorber |
| CN104048755B (en) * | 2014-05-21 | 2015-11-18 | 西北核技术研究所 | A kind of hypersorption High Energy Laser Energy Meter |
| CN109781256A (en) * | 2019-01-31 | 2019-05-21 | 中国科学院理化技术研究所 | A kind of measurement of laser energy method and device |
| CN111637967B (en) * | 2020-04-30 | 2023-03-28 | 中国工程物理研究院应用电子学研究所 | Universal solid absorption type high-energy laser energy measuring probe |
-
1995
- 1995-12-25 CN CN 95119405 patent/CN1042857C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1139208A (en) | 1997-01-01 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |