CN104834041B - A kind of interference filter with temperature-control adjustment device - Google Patents
A kind of interference filter with temperature-control adjustment device Download PDFInfo
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- CN104834041B CN104834041B CN201510233910.9A CN201510233910A CN104834041B CN 104834041 B CN104834041 B CN 104834041B CN 201510233910 A CN201510233910 A CN 201510233910A CN 104834041 B CN104834041 B CN 104834041B
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- temperature
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- etalon
- temperature control
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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
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Filters (AREA)
- Semiconductor Lasers (AREA)
Abstract
A kind of interference filter with temperature-control adjustment device provided by the invention, including temperature regulating device and temperature controller, wherein the temperature regulating device includes etalon, temperature control layer, load layer and insulating layer；The temperature control layer is measured in real time for acquiring the temperature of the etalon, and to the temperature of the etalon；The load layer, is placed on optical platform, the heat derives for generating the temperature control layer；The insulating layer, for load layer and environment to be isolated；The temperature controller, the temperature for measuring the temperature control layer carries out temperature control adjusting, and controls in scheduled temperature.Filtering can be effectively performed in the present invention.
Description
Technical field
The present invention relates to interference and filtering techniques, more particularly to a kind of interference filter with temperature-control adjustment device.
Background technique
In recent years, quantum information storage is a research hotspot in quantum information science field, utilizes electromagnetic induced transparency
It is even more the common concern for causing domestic and international scientific circles into atomic medium that effect, which stores light quantity sub-information,.In this field,
The detection of weak signal light is a unavoidable problem, how influence of the wiping out background light to signal light, improve reception system
Signal-to-noise ratio played a crucial role in the entire system with sensitivity.Therefore, filter plays the success or failure entirely tested
Critical effect is arrived.
Its broader bandwidth of conventionally used thin-film interference filters, about 100GHz are unable to satisfy the higher experiment of precision
It is required that.For the laser signal of narrow bandwidth, set using the atomic air chamber of laser pump (ing), confocal Fabry-Perot cavity and rationally
The blocky Fabry-Perot etalon of meter is filtered as filter, but can not be effectively by using the above method
It is filtered.
Summary of the invention
Interference filter provided by the invention with temperature-control adjustment device, can be effectively performed filtering.
According to an aspect of the present invention, a kind of interference filter with temperature-control adjustment device, including temperature regulating device are provided
And temperature controller, wherein the temperature regulating device includes etalon, temperature control layer, load layer and insulating layer；The temperature control layer is used
In the temperature of the acquisition etalon, and the temperature of the etalon is measured in real time；The load layer, is placed on light
It learns on platform, the heat derives for generating the temperature control layer；The insulating layer, for load layer and environment to be isolated；It is described
Temperature controller, the temperature for measuring the temperature control layer carries out temperature control adjusting, and controls in scheduled temperature.
A kind of interference filter with temperature-control adjustment device provided in an embodiment of the present invention is acquired by thermistor and is controlled
The temperature of warm layer, and temperature controller is sent it to, so that temperature controller carries out temperature control adjusting to the temperature of etalon,
And control in scheduled temperature, so as to which filtering is effectively performed.
Detailed description of the invention
Fig. 1 is the interference filter schematic diagram provided in an embodiment of the present invention with temperature-control adjustment device；
Fig. 2 is the schematic illustration of etalon provided in an embodiment of the present invention；
Fig. 3 is the partial plan view of etalon provided in an embodiment of the present invention；
Fig. 4 is that the parallel plate provided in an embodiment of the present invention for being coated with high-reflecting film influences to illustrate through the line width of laser
Figure；
Fig. 5 is that another parallel plate for being coated with high-reflecting film provided in an embodiment of the present invention influences to show through the line width of laser
It is intended to；
Fig. 6 is the schematic view of the front view of temperature regulating device provided in an embodiment of the present invention；
Fig. 7 is the side structure schematic view of temperature regulating device provided in an embodiment of the present invention；
Fig. 8 is the circuit diagram of temperature controller provided in an embodiment of the present invention；
Fig. 9 is filter display schematic diagram corresponding with Fig. 4 provided in an embodiment of the present invention.
Specific embodiment
The interference filter to provided in an embodiment of the present invention with temperature-control adjustment device carries out detailed with reference to the accompanying drawing
Description.
Fig. 1 is the interference filter schematic diagram provided in an embodiment of the present invention with temperature-control adjustment device.
Referring to Fig.1, including temperature regulating device 10 and temperature controller 20, wherein the temperature regulating device 10 includes etalon
101, temperature control layer 102, load layer 106 and insulating layer 107.
Temperature control layer 102 is measured in real time for acquiring the temperature of etalon, and to the temperature of etalon.
Load layer 106, is placed on optical platform, the heat derives for generating temperature control layer；
The insulating layer 107, for load layer and environment to be isolated.
The temperature controller 20 for measuring temperature control layer temperature and carrying out temperature control adjusting, and is controlled in scheduled temperature.
Here, etalon 101 obtain output signal when being adjusted to coaxial interference for signal light.
Further, the temperature control layer includes negative tempperature coefficient thermistor and platinum resistance thermometer sensor,；
The negative tempperature coefficient thermistor for acquiring the temperature of the temperature control layer, and sends it to temperature control
Device；
The platinum resistance thermometer sensor, the temperature for temperature control layer described in real-time monitoring.
Further, flat shape and circular shape is presented in the two sides of the etalon respectively.
Further, it is equipped with copper foil between the temperature control layer and the etalon and applies heat-conducting silicone grease.
Further, semiconductor chilling plate is provided on the outside of the control layer, the semiconductor chilling plate is for making institute
The surrounding for stating etalon is heated evenly.
Further, the window of the load layer is sealed using glass with reflection reducing coating, and the glass with reflection reducing coating is outer for completely cutting off
Portion's environment and the transmissivity for increasing signal light.
Fig. 2 is the schematic illustration of etalon provided in an embodiment of the present invention.
Referring to Fig. 2, the parallel plate that etalon is coated with high-reflecting film by two pieces is formed, two pieces of parallel glass for being coated with high-reflecting film
If the interval of glass plate is fixed, referred to as Fabry-Perot etalon, as F-P etalon；If be not fixed, referred to as method
Fabry-Perot interferometer, as F-P interferometer.
Etalon is made of high-quality K9 glass, and abscissa is wavelength, and ordinate n is refractive index, and refractive index is with wavelength
Increase and reduces.
Fig. 3 is the partial plan view of etalon provided in an embodiment of the present invention.
Referring to Fig. 3, etalon includes two faces, and one of face is plane, another face is radian, makes signal light in this way
Output signal is obtained when being adjusted to coaxial interference.If two sides is all plane, only ability when coaxial interference occurs for signal light
It can penetrate, although projection intensity is larger, be not easy to adjust.
Fig. 4 is that the parallel plate provided in an embodiment of the present invention for being coated with high-reflecting film influences to illustrate through the line width of laser
Figure.Referring to Fig. 4, axis of abscissas is frequency, and axis of ordinates is transmissivity, and the radial dispersive power of confocal interferometer is with two parallel glass
The interval of glass plate increases and increases, and the dispersive power of plane formula interferometer is unrelated with mirror surface spacing distance, but both at center
The dispersive power at place is maximum.Even if reflectivity is identical, total fineness of confocal Fabry-Parot interferent instrument is larger, thus its resolution ratio accordingly mentions
Height, therefore select plating for 95% anti-film, specifically can refer to another parallel plate for being coated with high-reflecting film as shown in Figure 5 influences thoroughly
Cross the line width schematic diagram of laser.
Fig. 6 is the positive structure diagram of temperature regulating device provided in an embodiment of the present invention.
Referring to Fig. 6, temperature regulating device includes etalon 101, temperature control layer 102, thermistor 103, platinum resistance thermometer sensor, 104, partly leads
Body cooling piece 105, load layer 106 and insulating layer 107.
Etalon 101 is located at structure innermost layer, be close to etalon 101 is temperature control layer 102, in temperature control layer 102 and standard
Add one layer of copper foil between tool 101 and smears heat-conducting silicone grease to improve heat conduction efficiency.
There are two temperature element, thermistor 103 and platinum resistance thermometer sensor,s 104 for temperature control layer 102, wherein thermistor 103 is negative
Temperature coefficient thermistor, platinum resistance thermometer sensor, 104 are also referred to as pt1000, input of the negative tempperature coefficient thermistor as temperature controller
Collected temperature signal is sent to temperature controller by end, and temperature controller carries out temperature control adjusting.Pt1000 is very quasi-
True temperature detecting resistance, precision can be to 3 after decimal point, with pt1000 come 102 temperature change of real-time monitoring temperature control layer.
There are 4 semiconductor chilling plates 105 in the outside of temperature control layer 102, is because of standard using 4 semiconductor chilling plates 105
The material of tool 101 is the non-conductor of heat, in order to be heated evenly its surrounding.Etalon 101 could be allowed to expand so each to base
This is identical, and the change of 101 length of etalon can cause the change of mean free path.
Load layer 106 is close to 105 outside of semiconductor chilling plate, and gap is filled up with heat conductive silica gel, heat-conducting layer lower end and optics
Platform connection, contact area is sufficiently large, can will not be changed with the temperature at proof load end 106 in this way.The window of load layer 106 is used
Glass with reflection reducing coating sealing 108, to completely cut off external environment, referring in particular to the side structure schematic view of temperature regulating device as shown in Figure 7.
Insulating layer 107 can play and completely cut off completely with outside air, effectively prevent convection current, not influenced by ambient temperature.
Fig. 8 is the circuit diagram of temperature controller provided in an embodiment of the present invention.
Referring to Fig. 8, temperature controller obtains error signal from electric current bridge, and the is input to after the amplification of differential amplifier circuit 1
Level-one ratio control circuit 2；Error signal is input to the control of second level ratio after the amplification of first order ratio control circuit 2
Circuit 3；Finally, negative-feedback circuit 4 controls temperature according to the current direction of the signal control semiconductor chilling plate received.Temperature
After spending controller start-up operation, laser tube can be controlled the temperature in setting by 60s or so.
Fig. 9 is filter display schematic diagram corresponding with Fig. 4 provided in an embodiment of the present invention.
Referring to Fig. 9, in Fig. 4, the spectral line width through etalon is about 220MHZ, and passes through the filter in Fig. 9
The spectral line width of display is 240MHZ.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (4)
1. a kind of interference filter with temperature-control adjustment device, which is characterized in that including temperature regulating device and temperature controller,
In, the temperature regulating device includes etalon, temperature control layer, load layer and insulating layer；
Flat shape and circular shape is presented in the two sides of the etalon respectively；
The temperature control layer is measured in real time for acquiring the temperature of the etalon, and to the temperature of the etalon；Institute
It states and is provided with semiconductor chilling plate on the outside of temperature control layer, the semiconductor chilling plate is 4, and the semiconductor chilling plate is for making
The surrounding of the etalon is heated evenly；
The load layer, is placed on optical platform, the heat derives for generating the temperature control layer；
The insulating layer, for load layer and environment to be isolated；
The temperature controller, the temperature for measuring the temperature control layer carries out temperature control adjusting, and controls in scheduled temperature；Temperature
It spends controller and obtains error signal from electric current bridge, first order ratio control circuit is input to after differential amplifier circuit amplifies；Accidentally
Difference signal is input to second level ratio control circuit after the amplification of first order ratio control circuit；Finally, negative-feedback circuit root
Temperature is controlled according to the current direction of the signal control semiconductor chilling plate received.
2. the interference filter according to claim 1 with temperature-control adjustment device, which is characterized in that the temperature control layer packet
Include negative tempperature coefficient thermistor and platinum resistance thermometer sensor,；
The negative tempperature coefficient thermistor for acquiring the temperature of the temperature control layer, and sends it to the temperature control
Device；
The platinum resistance thermometer sensor, the temperature for temperature control layer described in real-time monitoring.
3. the interference filter according to claim 1 with temperature-control adjustment device, which is characterized in that the temperature control layer and
It is equipped with copper foil between the etalon and applies heat-conducting silicone grease.
4. the interference filter according to claim 1 with temperature-control adjustment device, which is characterized in that the load layer
Window is sealed using glass with reflection reducing coating, and the glass with reflection reducing coating is used to completely cut off external environment and increase the transmissivity of signal light.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN201510233910.9A CN104834041B (en) | 2015-05-11 | 2015-05-11 | A kind of interference filter with temperature-control adjustment device |
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| CN104834041B true CN104834041B (en) | 2019-01-22 |
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| CN111596395B (en) * | 2020-06-15 | 2021-07-27 | 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 |
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