CN104834041A - Interference filter with temperature control adjusting device - Google Patents
Interference filter with temperature control adjusting device Download PDFInfo
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- CN104834041A CN104834041A CN201510233910.9A CN201510233910A CN104834041A CN 104834041 A CN104834041 A CN 104834041A CN 201510233910 A CN201510233910 A CN 201510233910A CN 104834041 A CN104834041 A CN 104834041A
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- Prior art keywords
- temperature
- layer
- temperature control
- etalon
- interference filter
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
- G02B5/284—Interference filters of etalon type comprising a resonant cavity other than a thin solid film, e.g. gas, air, solid plates
Abstract
The invention provides an interference filter with a temperature control adjusting device. The interference filter comprises a temperature control device and a temperature controller, wherein the temperature control device comprises a standard appliance, a temperature control layer, a load layer and a heat insulation layer. The temperature control layer is used for acquiring the temperature of the standard appliance and performing real-time detection on the temperature of the standard appliance. The load layer is placed on an optical platform and is used for discharging heat which is generated by the temperature control layer. The heat insulation layer is used for insulating the load layer from an outer environment. The temperature controller is used for measuring the temperature of the temperature control layer for performing temperature control adjustment and controls the temperature of the temperature control layer to a preset temperature. The interference filter can perform wave filtering effectively.
Description
Technical field
The present invention relates to interference and filtering technique, particularly relate to a kind of interference filter with temperature-control adjustment device.
Background technology
In recent years, quantum information storage is a study hotspot in quantum information science field, utilizes electromagnetic induced transparency effect light quantum information to be stored into the common concern causing domestic and international scientific circles in atomic medium especially.In this field, the detection of weak signal light is a unavoidable problem, and how wiping out background light is on the impact of flashlight, and the signal to noise ratio (S/N ratio) and the sensitivity that improve receiving system play vital effect in the entire system.Therefore, the success or failure of wave filter to whole experiment serve critical effect.
Usually its broader bandwidth of thin-film interference filters used, is about 100GHz, cannot meet the requirement of experiment that precision is higher.For the laser signal of narrow bandwidth, the block Fabry-Perot etalon of the atomic air chamber of laser pump (ing), confocal Fabry-Perot cavity and appropriate design is adopted to carry out filtering as wave filter, but by adopting said method effectively can not carry out filtering.
Summary of the invention
The interference filter with temperature-control adjustment device provided by the invention, can carry out filtering effectively.
According to an aspect of the present invention, provide a kind of interference filter with temperature-control adjustment device, comprise temperature regulating device and temperature controller, wherein, described temperature regulating device comprises etalon, temperature control layer, load layer and heat-insulation layer; Described temperature control layer, for gathering the temperature of described etalon, and detects in real time to the temperature of described etalon; Described load layer, is placed on optical table, derives for the heat produced by described temperature control layer; Described heat-insulation layer, for isolating load layer and environment; Described temperature controller, carries out temperature control adjustment for the temperature measuring described temperature control layer, and controls in predetermined temperature.
A kind of interference filter with temperature-control adjustment device that the embodiment of the present invention provides, the temperature of temperature control layer is gathered by thermistor, and send it to temperature controller, to make temperature controller, temperature control adjustment is carried out to the temperature of etalon, and control in predetermined temperature, thus effectively can carry out filtering.
Accompanying drawing explanation
The interference filter schematic diagram with temperature-control adjustment device that Fig. 1 provides for the embodiment of the present invention;
The principle schematic of the etalon that Fig. 2 provides for the embodiment of the present invention;
The partial plan view of the etalon that Fig. 3 provides for the embodiment of the present invention;
The live width schematic diagram of parallel plate impact through laser being coated with high-reflecting film that Fig. 4 provides for the embodiment of the present invention;
Fig. 5 provide for the embodiment of the present invention another be coated with the live width schematic diagram of parallel plate impact through laser of high-reflecting film;
The main TV structure schematic diagram of the temperature regulating device that Fig. 6 provides for the embodiment of the present invention;
The side-looking structural representation of the temperature regulating device that Fig. 7 provides for the embodiment of the present invention;
The circuit theory diagrams of the temperature controller that Fig. 8 provides for the embodiment of the present invention;
The wave filter display schematic diagram corresponding with Fig. 4 that Fig. 9 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the interference filter with temperature-control adjustment device that the embodiment of the present invention provides is described in detail.
The interference filter schematic diagram with temperature-control adjustment device that Fig. 1 provides for the embodiment of the present invention.
With reference to Fig. 1, comprise temperature regulating device 10 and temperature controller 20, wherein, described temperature regulating device 10 comprises etalon 101, temperature control layer 102, load layer 106 and heat-insulation layer 107.
Temperature control layer 102, for gathering the temperature of etalon, and detects in real time to the temperature of etalon.
Load layer 106, is placed on optical table, derives for the heat produced by temperature control layer;
Described heat-insulation layer 107, for isolating load layer and environment.
Described temperature controller 20, for measuring temperature control layer temperature and carrying out temperature control adjustment, and controls in predetermined temperature.
Here, etalon 101, is outputed signal when being adjusted to coaxial interference for flashlight.
Further, described temperature control layer comprises negative tempperature coefficient thermistor and platinum resistance thermometer sensor;
Described negative tempperature coefficient thermistor, for gathering the temperature of described temperature control layer, and sends it to temperature controller;
Described platinum resistance thermometer sensor, for the temperature of temperature control layer described in Real-Time Monitoring.
Further, the two sides of described etalon presents flat shape and circular shape respectively.
Further, be provided with Copper Foil between described temperature control layer and described etalon and apply heat-conducting silicone grease.
Further, the arranged outside of described key-course has semiconductor chilling plate, and described semiconductor chilling plate is heated evenly for making the surrounding of described etalon.
Further, the window of described load layer adopts glass with reflection reducing coating sealing, and described glass with reflection reducing coating is used for isolated external environment condition and increases the transmissivity of flashlight.
The principle schematic of the etalon that Fig. 2 provides for the embodiment of the present invention.
With reference to Fig. 2, etalon is made up of the parallel plate that two pieces are coated with high-reflecting film, if two pieces of intervals being coated with the parallel plate of high-reflecting film are fixed, is then called Fabry-Perot etalon, is F-P etalon; If do not fixed, be then called Fabry-Perot interferometer, be F-P interferometer.
Etalon adopts high-quality K9 glass to make, and horizontal ordinate is wavelength, and ordinate n is refractive index, and refractive index reduces with the increase of wavelength.
The partial plan view of the etalon that Fig. 3 provides for the embodiment of the present invention.
With reference to Fig. 3, etalon comprises two faces, and one of them face is plane, and another face is radian, makes flashlight be outputed signal when being adjusted to coaxial interference like this.If two sides is all plane, then can be through when only having flashlight generation coaxial interference, although projection intensity is comparatively large, be not easy to regulate.
The live width schematic diagram of parallel plate impact through laser being coated with high-reflecting film that Fig. 4 provides for the embodiment of the present invention.With reference to Fig. 4, abscissa axis is frequency, and axis of ordinates is transmissivity, and the radial dispersive power of confocal interferometer increases with the interval increase of two parallel plates, dispersive power and the minute surface spacing distance of plane formula interferometer have nothing to do, but both maximum in the dispersive power of center.Even if reflectivity is identical, total the fineness of confocal Fabry-Parot interferent instrument is comparatively large, the thus corresponding raising of its resolution, therefore selection plating is the anti-film of 95%, another parallel plate being coated with high-reflecting film that specifically can refer to as shown in Figure 5 affects the live width schematic diagram through laser.
The temperature regulating device that Fig. 6 provides for the embodiment of the present invention face structural representation.
With reference to Fig. 6, temperature regulating device comprises etalon 101, temperature control layer 102, thermistor 103, platinum resistance thermometer sensor, 104, semiconductor chilling plate 105, load layer 106 and heat-insulation layer 107.
Etalon 101 is positioned at structure innermost layer, what be close to etalon 101 is temperature control layer 102, adds one deck Copper Foil and smear heat-conducting silicone grease to improve heat conduction efficiency between temperature control layer 102 and etalon 101.
Temperature control layer 102 has two temperature elements, thermistor 103 and platinum resistance thermometer sensor, 104, wherein, thermistor 103 is negative tempperature coefficient thermistor, platinum resistance thermometer sensor, 104 also claims pt1000, the temperature signal collected, as the input end of temperature controller, is sent to temperature controller by negative tempperature coefficient thermistor, and temperature controller carries out temperature control adjustment.Pt1000 is temperature detecting resistance very accurately, and precision can after radix point 3, carry out Real-Time Monitoring temperature control layer 102 temperature variation with pt1000.
There are 4 semiconductor chilling plates 105 in the outside of temperature control layer 102, adopting 4 semiconductor chilling plates 105 to be because the material of etalon 101 is poor conductors of heat, being heated evenly to make its surrounding.Such that etalon 101 could be allowed to expand is each to substantially identical, and the change of etalon 101 length can cause the change of mean free path.
Load layer 106 is close to outside semiconductor chilling plate 105, and space heat conductive silica gel is filled up, and heat-conducting layer lower end is connected with optical table, and contact area is enough large, can the temperature of proof load end 106 can not change like this.The window glass with reflection reducing coating sealing 108 of load layer 106, with isolated external environment condition, the concrete side-looking structural representation with reference to temperature regulating device as shown in Figure 7.
Heat-insulation layer 107, can play with outside air completely isolated, effectively prevent convection current, not influenced by ambient temperature.
The circuit theory diagrams of the temperature controller that Fig. 8 provides for the embodiment of the present invention.
With reference to Fig. 8, temperature controller obtains error signal from electric current bridge, after differential amplifier circuit 1 amplifies, be input to first order proportional control circuit 2; Error signal, after first order proportional control circuit 2 amplifies, is input to second level proportional control circuit 3; Finally, the direction of current that negative-feedback circuit 4 controls semiconductor chilling plate according to the signal received carrys out control temperature.After temperature controller is started working, laser tube can be controlled the temperature in setting by about 60s.
The wave filter display schematic diagram corresponding with Fig. 4 that Fig. 9 provides for the embodiment of the present invention.
With reference to Fig. 9, in the diagram, the spectral line width through etalon is approximately 220MHZ, and is 240MHZ by the spectral line width of the wave filter display in Fig. 9.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (6)
1. have an interference filter for temperature-control adjustment device, it is characterized in that, comprise temperature regulating device and temperature controller, wherein, described temperature regulating device comprises etalon, temperature control layer, load layer and heat-insulation layer;
Described temperature control layer, for gathering the temperature of described etalon, and detects in real time to the temperature of described etalon;
Described load layer, is placed on optical table, derives for the heat produced by described temperature control layer;
Described heat-insulation layer, for isolating load layer and environment;
Described temperature controller, carries out temperature control adjustment for the temperature measuring described temperature control layer, and controls in predetermined temperature.
2. the interference filter with temperature-control adjustment device according to claim 1, is characterized in that, described temperature control layer comprises negative tempperature coefficient thermistor and platinum resistance thermometer sensor;
Described negative tempperature coefficient thermistor, for gathering described output signal, and measures the temperature of described output signal;
Described platinum resistance thermometer sensor, for the temperature of temperature control layer described in Real-Time Monitoring.
3. the interference filter with temperature-control adjustment device according to claim 1, is characterized in that, the two sides of described etalon presents flat shape and circular shape respectively.
4. the interference filter with temperature-control adjustment device according to claim 1, is characterized in that, is provided with Copper Foil and applies heat-conducting silicone grease between described temperature control layer and described etalon.
5. the interference filter with temperature-control adjustment device according to claim 1, is characterized in that, the arranged outside of described key-course has semiconductor chilling plate, and described semiconductor chilling plate is heated evenly for making the surrounding of described etalon.
6. the interference filter with temperature-control adjustment device according to claim 1, is characterized in that, the window of described load layer adopts glass with reflection reducing coating sealing, and described glass with reflection reducing coating is used for isolated external environment condition and increases the transmissivity of flashlight.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510233910.9A CN104834041B (en) | 2015-05-11 | 2015-05-11 | A kind of interference filter with temperature-control adjustment device |
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| CN201510233910.9A CN104834041B (en) | 2015-05-11 | 2015-05-11 | A kind of interference filter with temperature-control adjustment device |
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| CN104834041A true CN104834041A (en) | 2015-08-12 |
| CN104834041B CN104834041B (en) | 2019-01-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596395A (en) * | 2020-06-15 | 2020-08-28 | 山西大学 | Automatic optimization filtering system and method for optical etalon |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10206527A (en) * | 1997-01-21 | 1998-08-07 | Nec Corp | Interference filter temperature controller and laser radar |
| CN101106254A (en) * | 2007-08-07 | 2008-01-16 | 山西大学 | A standard temperature control device |
| CN102227045A (en) * | 2011-05-13 | 2011-10-26 | 中国科学院上海光学精密机械研究所 | Laser diode pumped full-solid-state 2mu m single frequency laser |
| CN202267882U (en) * | 2011-09-20 | 2012-06-06 | 华北电力大学（保定） | Reference grating and F-P etalon temperature controlling apparatus |
| CN203324572U (en) * | 2013-07-25 | 2013-12-04 | 福州高意通讯有限公司 | Thermally tunable optical filter |
-
2015
- 2015-05-11 CN CN201510233910.9A patent/CN104834041B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10206527A (en) * | 1997-01-21 | 1998-08-07 | Nec Corp | Interference filter temperature controller and laser radar |
| CN101106254A (en) * | 2007-08-07 | 2008-01-16 | 山西大学 | A standard temperature control device |
| CN102227045A (en) * | 2011-05-13 | 2011-10-26 | 中国科学院上海光学精密机械研究所 | Laser diode pumped full-solid-state 2mu m single frequency laser |
| CN202267882U (en) * | 2011-09-20 | 2012-06-06 | 华北电力大学（保定） | Reference grating and F-P etalon temperature controlling apparatus |
| CN203324572U (en) * | 2013-07-25 | 2013-12-04 | 福州高意通讯有限公司 | Thermally tunable optical filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596395A (en) * | 2020-06-15 | 2020-08-28 | 山西大学 | Automatic optimization filtering system and method for optical etalon |
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| CN104834041B (en) | 2019-01-22 |
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