CN104165690A - Calibration device for high-energy laser energy meter - Google Patents
Calibration device for high-energy laser energy meter Download PDFInfo
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- CN104165690A CN104165690A CN201410448322.2A CN201410448322A CN104165690A CN 104165690 A CN104165690 A CN 104165690A CN 201410448322 A CN201410448322 A CN 201410448322A CN 104165690 A CN104165690 A CN 104165690A
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Abstract
The invention provides a calibration device for a high-energy laser energy meter. The calibration device comprises four high-power halogen tungsten lamps, eight halogen tungsten lamp fixing supports, a reflection cone, a reflection cone fixing bracket, a cooling fan, an adjusting threaded rod, a panel energy meter, a thermocouple temperature sensor, a switchover base, a power line, an electric energy meter, a signal lead and a temperature data acquisition system. The reflection cone is of a square pyramid frustum structure. The outer surface of the reflection cone is provided with a coating subjected to sand blasting and gold plating. The four high-power halogen tungsten lamps are mounted on the four side faces of the reflection cone. The panel energy meter is of a circular cake structure, and the outer surface of the panel energy meter is provided with a coating subjected to polishing and gold plating. The reflection cone and the panel energy meter are both connected with the adjusting threaded rod through threads. The distance between the reflection cone and the panel energy meter can be adjusted by rotating the threads of the adjusting threaded rod. The calibration device can be used for calibrating the conical cavity type high-energy laser energy meter, and the calibration power and the calibration accuracy of the high-power high-energy laser energy meter can be remarkably improved; the calibration device is safe and reliable in the using process.
Description
Technical field
The invention belongs to energy measurement of high energy laser calibration field, be specifically related to a kind of High Energy Laser Energy Meter calibrating installation, be applicable to the High Energy Laser Energy Meter calibration of conical cavity type.
Background technology
Conical cavity type High Energy Laser Energy Meter is for the direct measurement of energy measurement of high energy laser, at present owing to lacking stable high-power laser light source and powerful standard energy meter, cannot adopt conventional laser energy meter calibration steps to calibrate, can only utilize electric light or electric heating equivalent device, the mode that converts electrical energy into luminous energy or heat energy replaces the energy of superlaser, thereby carries out equivalence calibration.Document < < Calibration Method for High Energy Laser Energy Meter research > > (photon journal, 2007,36(6): 982-985) people such as Liu Guorong has carried out the research of electric light calibration steps.The design of power meter and value study on the stability > > (modern metrology and measurement in document < < electric calibration laser, 1996,5:36-39) people such as Yu Jing utilizes electric heating calibrating installation to realize the calibration of the low power power energy meter of centering.Yet, above equivalent device is when being applied to high-power high-energy laser energy meter calibrating, mainly there is following problem: first, aspect the equivalent power of calibration, because the inner space of its absorbing cavity of conical cavity type High Energy Laser Energy Meter is narrow and small, conventional electric light equivalent device conventionally adopts the mode of single kW level power halogen tungsten lamp when design at present, equivalent power is low, therefore how in narrow space, should obtain higher equivalent power (as more than reaching 10kW), guarantee again that the safety of halogen tungsten lamp and reliability are to need one of problem solving simultaneously, secondly, aspect the precision of calibration, because the equivalent power of conventional at present electric light or electric heating equivalent device is lower, in order to obtain the equivalence compared with macro-energy, conventionally adopt the mode working long hours to exchange the increase of energy for, this mode can be introduced the impact of thermal loss factor, calibration accuracy is low, uncertainty of measurement is large, and superlaser has extremely strong directivity, and the light source that regulation light source generally adopts the total space to disperse, not only can cause portion of energy loss, and the light distribution of the light distribution in absorbing cavity during from superlaser incident is completely different, calibration accuracy is low, therefore how the structural design by calibrating installation is the problem that needs emphasis to solve to improve calibration accuracy, in addition, the reliability of calibrating installation and security are also the problems meriting attention, the narrow and small restriction in inner space due to conical cavity type High Energy Laser Energy Meter absorbing cavity, and be generally airtight space in order to improve precision absorbing cavity in calibration process, and in airtight space, light for a long time high-power lamp group, local temperature constantly accumulation raises, and the danger such as fluorescent tube explosion very easily occur.
Summary of the invention
In order to realize the calibration to conical cavity type High Energy Laser Energy Meter, solve the low problem of calibration equivalent power, improve calibration accuracy, and assurance device is safe and reliable, the invention provides a kind of High Energy Laser Energy Meter calibrating installation.
A High Energy Laser Energy Meter calibrating installation, is characterized in: described calibrating installation comprises high-power halogen tungsten lamp, halogen tungsten lamp fixed support, reflection cone, reflection cone fixed mount, cooling fan, adjusting screw(rod), dull and stereotyped energy meter, thermocouple temperature sensor, switching base, power lead, electric energy meter, signal lead, temperature data collecting system; Described high-power halogen tungsten lamp is arranged on halogen tungsten lamp fixed support, and halogen tungsten lamp fixed support is connected with reflection cone by screw thread; The bottom of reflection cone is provided with reflection cone fixed mount; Cooling fan is installed in reflection cone chamber, by screw thread, is fixed on reflection cone fixed mount; Reflection cone fixed mount is fixedly connected with adjusting screw(rod); Adjusting screw(rod) passes from dull and stereotyped energy meter center, and dull and stereotyped energy meter is connected with adjusting screw(rod) by screw thread; Reflection cone cavity inner wall and dull and stereotyped energy meter shady face are provided with several thermocouple temperature sensors, and thermocouple temperature sensor is electrically connected to temperature data collecting system by signal lead; Switching base by thread is fixedly mounted on the end of adjusting screw(rod), is provided with the AC power input interface of high-power halogen tungsten lamp, and is connected with electrical energy meter electricity by power lead on switching base.
Described reflection cone is positive truncated rectangular pyramids structure, and inside is set to hollow cavity.The cone angle size of reflection cone and the cone angle equal and opposite in direction of the conical cavity type High Energy Laser Energy Meter being calibrated.
Described high-power halogen tungsten lamp is 4 and by halogen tungsten lamp fixed support, is arranged on 4 isosceles trapezoid lateral surfaces of reflection cone respectively, and every halogen tungsten lamp is installed along the axis of symmetry of corresponding isosceles trapezoid.
Described dull and stereotyped energy is counted patty structure, center is provided with tapped through hole, and adjusting screw(rod) passes from dull and stereotyped energy meter center, and closely connects by screw thread, dull and stereotyped energy meter can freely rotate and change push-in stroke on adjusting screw(rod), for regulating the distance between dull and stereotyped energy meter and reflection cone.
The working end of described thermocouple temperature sensor is for revealing end type.
Described reflection cone adopts red copper material, and reflection cone outside surface has through the gold-plated coating of sandblast.
The shot blasting particles degree of described reflection cone external surface coating is 3 μ m～6 μ m, and gold plating thickness is 3 μ m～6 μ m.
Described dull and stereotyped energy meter adopts red copper material, and the surface of side to light has through the gold-plated coating of polishing.
In order to improve equivalent power and the calibration accuracy of calibrating installation, the present invention has taked following several technical measures: the one, and adopt 4 high-power halogen tungsten lamps as regulation light source, calibration general power reaches tens thousand of watts, makes calibrating installation can reach at short notice larger energy; The 2nd, design the reflection cone of positive truncated rectangular pyramids structure, and high-power halogen tungsten lamp is installed on reflection cone by halogen tungsten lamp fixed support, make the irradiation zone of each halogen tungsten lamp be gathered in as far as possible High Energy Laser Energy Meter front end, and the cone angle equal and opposite in direction of the big or small conical cavity type High Energy Laser Energy Meter with being calibrated of the cone angle of reflection cone, reflection cone outside surface is through the gold-plated processing of sandblast, the light that halogen tungsten lamp is radiate is more even after the diffuse reflection of reflection cone outside surface, also greatly reduces the absorption of reflection cone to energy simultaneously; The 3rd, the bottom of reflection cone is provided with reflection cone fixed mount, between reflection cone and reflection cone fixed mount, increased teflon heat insulating mattress, reduce the heat conduction between reflection cone and reflection cone fixed mount and adjusting screw(rod), effectively suppress the energy loss that heat conduction causes, and reflection cone cavity inner wall is provided with several thermocouple temperature sensors, by signal lead, be electrically connected to the energy value absorbing for accurately measuring reflection cone with temperature data collecting system; The 4th, dull and stereotyped energy meter is set, stop the part light that halogen tungsten lamp gives off to be overflowed from the High Energy Laser Energy Meter porch being calibrated, and can utilize adjusting screw(rod) to change the distance between dull and stereotyped energy meter and reflection cone, thereby make reflection cone be advanced to greatest extent the front end of High Energy Laser Energy Meter, the distribution of light intensity during the incident of simulation superlaser; The 5th, the side to light of dull and stereotyped energy meter adopts the gold-plated processing of polishing, making light that halogen tungsten lamp is dispersed to High Energy Laser Energy Meter Way in by dull and stereotyped energy meter, be stopped and again be reflected back High Energy Laser Energy Meter cavity front end absorbs again, dull and stereotyped energy meter shady face is also provided with several thermocouple temperature sensors, the energy value absorbing for measuring dull and stereotyped energy meter.
Aspect the security of calibrating installation, reliability, the present invention has taked three safeguards: the one, and design halogen tungsten lamp fixed support, make firm being arranged in support bracket fastened half slot of halogen tungsten lamp, and there is certain distance with reflection cone surface, thereby avoid halogen tungsten lamp to be directly close to reflection cone surface, eliminate the too high potential safety hazard of bringing of local temperature; The 2nd, in reflection cone chamber, be provided with cooling fan, and be fixed on reflection cone fixed mount by screw thread, cooling fan can increase circulating of High Energy Laser Energy Meter inner air, forms an air flow field, avoids high-power halogen tungsten lamp that explosion occurs in confined space; The 3rd, the positive truncated rectangular pyramids design of reflection cone, make 4 high-power halogen tungsten lamps be installed on respectively 4 sides of positive truncated rectangular pyramids, effectively reduce overlapping, the interference of irradiation zone between 4 lamps, the glass lamp shade temperature that especially between lamp, irradiation causes mutually sharply raises the danger of explosion occurs.
Adopt the mode of branched high-power halogen tungsten lamp parallel running to improve the calibration power of High Energy Laser Energy Meter calibrating installation, by the design of reflection cone, dull and stereotyped energy meter, adjusting screw(rod), and the processing of surface coating, accurately measure the means such as energy that reflection cone and dull and stereotyped energy meter absorb, heat conduction inhibitions, raising calibration accuracy.The present invention can realize the calibration to conical cavity type High Energy Laser Energy Meter, and significantly promotes calibration power and calibration accuracy to high-power High Energy Laser Energy Meter, and calibrating installation is safety, reliable in use.
Accompanying drawing explanation
Fig. 1 is High Energy Laser Energy Meter calibrating installation structural representation of the present invention;
Fig. 2 is the connection diagram of utilizing High Energy Laser Energy Meter calibrating installation of the present invention to calibrate conical cavity type High Energy Laser Energy Meter;
In figure: 1. dull and stereotyped energy meter 8. thermocouple temperature sensors 9. switching base 10. power lead 11. electric energy meter 12. signal lead 13. temperature data collecting system 14. conical cavity type High Energy Laser Energy Meters of high-power halogen tungsten lamp 2. halogen tungsten lamp fixed support 3. reflection cone 4. reflection cone fixed mount 5. cooling fan 6. adjusting screw(rod) 7..
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
embodiment 1
Fig. 1 is High Energy Laser Energy Meter calibrating installation structural representation of the present invention, and Fig. 2 is the connection diagram of utilizing High Energy Laser Energy Meter calibrating installation of the present invention to calibrate conical cavity type High Energy Laser Energy Meter.In Fig. 1 and Fig. 2, High Energy Laser Energy Meter calibrating installation of the present invention comprises four high-power halogen tungsten lamps 1, eight halogen tungsten lamp fixed supports 2, reflection cone 3, reflection cone fixed mount 4, cooling fan 5, adjusting screw(rod) 6, dull and stereotyped energy meter 7, thermocouple temperature sensor 8, switching base 9, power lead 10, electric energy meter 11, signal lead 12, temperature data collecting system 13; Four described high-power halogen tungsten lamps 1 are arranged on halogen tungsten lamp fixed support 2, and halogen tungsten lamp fixed support 2 is connected with reflection cone 3 by screw thread; The bottom of reflection cone 3 is provided with reflection cone fixed mount 4; Cooling fan 5 is installed in reflection cone 3 chambeies, by screw thread, is fixed on reflection cone fixed mount 4; Reflection cone fixed mount 4 is connected and fixed by screw thread and adjusting screw(rod) 6; Adjusting screw(rod) 6 passes from dull and stereotyped energy meter 7 centers, and dull and stereotyped energy meter 7 is connected with adjusting screw(rod) 6 by screw thread; Reflection cone 3 cavity inner walls and dull and stereotyped energy meter 7 shady faces are provided with several thermocouple temperature sensors 8, and thermocouple temperature sensor 8 is electrically connected to 13 by signal lead 12 with temperature data collecting system; Switching base 9 is fixedly mounted on the end of adjusting screw(rod) 6 by screw thread, be provided with the AC power input interface of high-power halogen tungsten lamp 1 on switching base 9, and is electrically connected to electric energy meter 11 by power lead 10.
In Fig. 1, High Energy Laser Energy Meter calibrating installation adopts the mode of four high-power halogen tungsten lamp 1 parallel connections as regulation light source, makes the calibration general power of device reach tens thousand of watts, and calibrating installation can reach higher energy at short notice.
Four high-power halogen tungsten lamps 1 are arranged on halogen tungsten lamp fixed support 2, and halogen tungsten lamp fixed support 2 is installed on reflection cone 3 by screw thread.Reflection cone 3 is designed to positive truncated rectangular pyramids structure, and inside is set to hollow cavity, the cone angle size of reflection cone 3 and the cone angle equal and opposite in direction of the conical cavity type High Energy Laser Energy Meter being calibrated.Four high-power halogen tungsten lamps 1 are arranged on four isosceles trapezoid lateral surfaces of reflection cone 3 by halogen tungsten lamp fixed support 2 respectively, every halogen tungsten lamp 1 is installed along the axis of symmetry of corresponding isosceles trapezoid, makes the irradiation zone of every halogen tungsten lamp 1 be gathered in as far as possible High Energy Laser Energy Meter front end.Four high-power halogen tungsten lamps 1 are installed on respectively four sides of reflection cone 3 positive truncated rectangular pyramids, can effectively reduce overlapping, the interference of irradiation zone between four halogen tungsten lamps, the glass lamp shade temperature that reduces mutual irradiation initiation between halogen tungsten lamp sharply raises the risk of explosion occurs.
The material that reflection cone 3 adopts is red copper, and outside surface is the coating through the gold-plated processing of sandblast, makes light that halogen tungsten lamp radiate repeatedly more even after diffuse reflection through reflection cone 3 outside surfaces, also greatly reduces the absorption of 3 pairs of energy of reflection cone simultaneously.In the present embodiment, the shot blasting particles degree of reflection cone 3 external surface coatings is 3 μ m, and gold plating thickness is 3 μ m.
The bottom of reflection cone 3 is provided with reflection cone fixed mount 4, between reflection cone 3 and reflection cone fixed mount 4, has increased teflon heat insulating mattress, reduces reflection cone 3 and conducts with the heat of reflection cone fixed mount 4, effectively suppresses the energy loss causing due to conduction.Reflection cone is provided with cooling fan 5 in 3 chambeies, and by screw thread, is fixed on one end of reflection cone fixed mount 4, and cooling fan 5 can increase circulating of inner air, forms an air flow field, avoids high-power halogen tungsten lamp 1 that explosion occurs in confined space.The other end of reflection cone fixed mount 4 is connected and fixed by screw thread and adjusting screw(rod) 6.
Dull and stereotyped energy meter 7 is patty structure, and material is red copper.Dull and stereotyped energy meter 7 centers are provided with tapped through hole.The side to light of dull and stereotyped energy meter 7 is the coating through the gold-plated processing of polishing, makes light that halogen tungsten lamp 1 is dispersed to High Energy Laser Energy Meter Way in by dull and stereotyped energy meter 7, be stopped and again be reflected back High Energy Laser Energy Meter cavity front end and again absorbs.
The outside surface of adjusting screw(rod) 6 is provided with fine thread, and inside is hollow cavity.Adjusting screw(rod) 6 passes from the tapped through hole at dull and stereotyped energy meter 7 centers, and dull and stereotyped energy meter 7 is connected with adjusting screw(rod) 6 by screw thread.By the screw thread of rotation adjusting screw(rod) 6, dull and stereotyped energy meter 7 can freely rotate change push-in stroke and regulate the distance between dull and stereotyped energy meter 7 and reflection cone 3 on adjusting screw(rod) 6, thereby makes reflection cone 3 be advanced to greatest extent the front end of High Energy Laser Energy Meter.
The shady face of the cavity inner wall of reflection cone 3 and dull and stereotyped energy meter 7 is provided with several thermocouple temperature sensors 8, the working end of thermocouple temperature sensor 8 is for revealing end type, thermocouple temperature sensor 8 is electrically connected to 13 by signal lead 12 with temperature data collecting system, for accurately measuring the energy value that reflection cone 3 and dull and stereotyped energy meter 7 absorb.
The end of adjusting screw(rod) 6 is provided with switching base 9, installs fixing by screw thread.On switching base 9, be provided with the AC power input interface of high-power halogen tungsten lamp 1, and be electrically connected to electric energy meter 11 by power lead 10.
In Fig. 2, utilize High Energy Laser Energy Meter calibrating installation of the present invention to calibrate conical cavity type High Energy Laser Energy Meter.High-power halogen tungsten lamp 1, reflection cone 3 are arranged on the absorbing cavity inside of High Energy Laser Energy Meter completely, dull and stereotyped energy meter 7 is fixed on High Energy Laser Energy Meter absorbing cavity porch, stop the part light that halogen tungsten lamp 1 gives off to be overflowed from High Energy Laser Energy Meter absorbing cavity porch, make whole luminous energy that halogen tungsten lamp 1 gives off all be completely enclosed within High Energy Laser Energy Meter absorbing cavity inside cavity.The cone angle size of reflection cone 3 and the cone angle equal and opposite in direction of the conical cavity type High Energy Laser Energy Meter being calibrated, by rotation adjusting screw(rod) 6, make reflection cone 3 be advanced to greatest extent the front end of High Energy Laser Energy Meter, thereby improve equivalence and the precision of calibration.Utilization is adhered to thermocouple temperature sensor 8, signal lead, the temperature data collecting system 13 of reflection cone 3 cavity inner walls and dull and stereotyped energy meter 7 shady faces, can accurately measure the energy value that reflection cone 3 and dull and stereotyped energy meter 7 absorb.Utilize electric energy meter 11 can accurately measure the input electric energy that halogen tungsten lamp 1 consumes.
embodiment 2
Embodiment 2 is basic identical with embodiment 1 structure, and difference is, in the present embodiment, the shot blasting particles degree of reflection cone 3 external surface coatings is 6 μ m, and gold plating thickness is 6 μ m.
Claims (9)
1. a High Energy Laser Energy Meter calibrating installation, is characterized in that: described calibrating installation comprises high-power halogen tungsten lamp (1), halogen tungsten lamp fixed support (2), reflection cone (3), reflection cone fixed mount (4), cooling fan (5), adjusting screw(rod) (6), dull and stereotyped energy meter (7), thermocouple temperature sensor (8), switching base (9), power lead (10), electric energy meter (11), signal lead (12), temperature data collecting system (13); It is upper that described high-power halogen tungsten lamp (1) is arranged at halogen tungsten lamp fixed support (2), and halogen tungsten lamp fixed support (2) is connected with reflection cone (3); The bottom of reflection cone (3) is provided with reflection cone fixed mount (4); Cooling fan (5) is installed in reflection cone (3) chamber, is fixed on reflection cone fixed mount (4); Reflection cone fixed mount (4) is fixedly connected with adjusting screw(rod) (6); Adjusting screw(rod) (6) passes from dull and stereotyped energy meter (7) center, and dull and stereotyped energy meter (7) is connected with adjusting screw(rod) (6); Reflection cone (3) cavity inner wall and dull and stereotyped energy meter (7) shady face are provided with several thermocouple temperature sensors (8), and thermocouple temperature sensor (8) is electrically connected to (13) by signal lead (12) with temperature data collecting system; Switching base (9) is fixedly mounted on the end of adjusting screw(rod) (6) by screw thread, be provided with the AC power input interface of high-power halogen tungsten lamp (1) on switching base (9), and is electrically connected to electric energy meter (11) by power lead (10).
2. High Energy Laser Energy Meter calibrating installation according to claim 1, is characterized in that: described reflection cone (3) is positive truncated rectangular pyramids structure, and inside is set to hollow cavity.
3. reflection cone according to claim 2 (3), is characterized in that: the cone angle size of described reflection cone (3) and the cone angle equal and opposite in direction of the conical cavity type High Energy Laser Energy Meter being calibrated.
4. High Energy Laser Energy Meter calibrating installation according to claim 1, it is characterized in that: described high-power halogen tungsten lamp (1) is 4, by halogen tungsten lamp fixed support (2), be arranged on 4 isosceles trapezoid lateral surfaces of reflection cone (3) respectively, every halogen tungsten lamp (1) is installed along the axis of symmetry of corresponding isosceles trapezoid.
5. High Energy Laser Energy Meter calibrating installation according to claim 1, it is characterized in that: described dull and stereotyped energy meter (7) is patty structure, center is provided with tapped through hole, adjusting screw(rod) (6) passes from dull and stereotyped energy meter (7) center, and closely connect by screw thread, dull and stereotyped energy meter (7) can change push-in stroke upper freely rotation of adjusting screw(rod) (6), for regulating the distance between dull and stereotyped energy meter (7) and reflection cone (3).
6. High Energy Laser Energy Meter calibrating installation according to claim 1, is characterized in that: the working end of described thermocouple temperature sensor (8) is for revealing end type.
7. High Energy Laser Energy Meter calibrating installation according to claim 1, is characterized in that: it is material that described reflection cone (3) adopts red copper, and reflection cone (3) outside surface has through the gold-plated coating of sandblast.
8. High Energy Laser Energy Meter calibrating installation according to claim 7, is characterized in that: the shot blasting particles degree of described reflection cone (3) external surface coating is 3 μ m～6 μ m, and gold plating thickness is 3 μ m～6 μ m.
9. High Energy Laser Energy Meter calibrating installation according to claim 1, is characterized in that: it is material that described dull and stereotyped energy meter (7) adopts red copper, and the surface of side to light has through the gold-plated coating of polishing.
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| CN104165690B CN104165690B (en) | 2016-01-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111637967A (en) * | 2020-04-30 | 2020-09-08 | 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 |
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