CN103836421A - Rubidium atomic frequency standard spectrum lamp device suitable for vacuum conditions - Google Patents
Rubidium atomic frequency standard spectrum lamp device suitable for vacuum conditions Download PDFInfo
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- CN103836421A CN103836421A CN201410107421.4A CN201410107421A CN103836421A CN 103836421 A CN103836421 A CN 103836421A CN 201410107421 A CN201410107421 A CN 201410107421A CN 103836421 A CN103836421 A CN 103836421A
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- rubidium
- spectrum lamp
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Abstract
The invention discloses a rubidium atomic frequency standard spectrum lamp device suitable for vacuum conditions. The rubidium atomic frequency standard spectrum lamp device mainly solves the problems that in the prior art, the stability of a rubidium atomic frequency standard spectrum lamp needs to be improved, the rubidium atomic frequency standard spectrum lamp is prone to overheating, and the working performance of the rubidium atomic frequency standard spectrum lamp is affected severely. The rubidium atomic frequency standard spectrum lamp device comprises a radio frequency oscillation circuit box, a radio frequency oscillation circuit, a bulb tail tube fixing holder and a rubidium spectrum lamp, wherein the radio frequency oscillation circuit is installed in the radio frequency oscillation circuit box; the bulb tail tube fixing holder is fixed outside the radio frequency oscillation circuit box; the tail of the rubidium spectrum lamp is installed on the bulb tail tube fixing holder, the interior of the rubidium spectrum lamp is filled with starter gas and rubidium-87 metal, and oscillating coils are wound around the exterior of the rubidium spectrum lamp. The side, where the bulb tail tube fixing holder is installed, of the radio frequency oscillation circuit box is provided with a non-metallic heat insulation layer. The periphery of the rubidium spectrum lamp is provided with a non-metallic heat insulation cover. The periphery of the non-metallic heat insulation cover is provided with a heating constant-temperature cover, and the heating constant-temperature cover is provided with a heating device. According to the scheme, the rubidium atomic frequency standard spectrum lamp device achieves the purposes of stable performance and high reliability, thereby having high practical value and promotional value.
Description
Technical field
The present invention relates to a kind of rubidium atomic frequency standard spectral lamp device, specifically, relate to a kind of rubidium atomic frequency standard spectral lamp device that is applicable to vacuum condition.
Background technology
Along with scientific and technological development, the fields such as GPS, 3G communication, radar system, traffic control system, laser ranging, power scheduling all need more to stablize and precise time frequency signal to realize reliably working, traditional mechnical oscillator, crystal oscillator can not be satisfied the demand.In the case, atomic frequency standard has obtained using more and more widely with its high stability and the degree of accuracy, in Rb atom frequency marking, the spectrum lamp that produces pumping light is the critical component of atomic frequency standard, the light intensity of spectrum lamp and spectral profile have determined the frequency stability of atomic frequency standard, and the pumping trimmed book that spectrum lamp produces ground noise has determined the signal to noise ratio of system, therefore the performance of spectrum lamp has direct impact to the accuracy of atomic frequency standard.
In addition, the accuracy of rubidium clock (stability and the degree of accuracy) has great relation with temperature stability: temperature stability is higher, and the accuracy of rubidium clock is higher; Otherwise lower.In the case, if rubidium clock is placed under vacuum environment, owing to there is no cross-ventilated impact, temperature stability can improve 1 more than magnitude than atmospheric pressure environment, thereby accuracy can improve 1 more than magnitude.For example, the long-term stability that the spaceborne rubidium clock of GPS is placed under vacuum can reach E-15 magnitude, and general rubidium clock is operated under atmospheric pressure environment, and its long-term stability, only in E-12 magnitude, differs and reaches 3 magnitudes.It is thermal design that rubidium clock is operated in difference maximum under vacuum and condition of normal pressure, and under vacuum condition, owing to not having air to produce thermal convection current, temperature stability is improved; But also because there is no thermal convection current, be easy to occur superheating phenomenon simultaneously; Reasonably thermal design need to be under not overheated prerequisite the raising temperature stability of maximum possible.Rubidium spectral lamp, as the most serious parts of spontaneous heating in rubidium clock, is also the most easily to occur overheated parts, and thermal design how to carry out rubidium atomic frequency standard spectral lamp device is an important job.
Summary of the invention
The object of the present invention is to provide a kind of rubidium atomic frequency standard spectral lamp that is applicable to vacuum condition, mainly solve the rubidium atomic frequency standard spectral lamp stability existing in prior art and have much room for improvement, easily occur superheating phenomenon, have a strong impact on the problem of its service behaviour.
To achieve these goals, the technical solution used in the present invention is as follows:
Be applicable to the rubidium atomic frequency standard spectral lamp device of vacuum condition, comprise RF oscillatory circuit box, be arranged on the RF oscillatory circuit in RF oscillatory circuit box, be fixed on the bulb tail pipe holder of RF oscillatory circuit box outside, afterbody is arranged on bulb tail pipe holder, inside is filled and is shaped with starter gas and rubidium 87 metals, outside is wound with the rubidium spectral lamp of oscillator coil, described RF oscillatory circuit box bulb mounting tail pipe holder one side is provided with nonmetal thermal insulation layer, rubidium spectral lamp periphery is provided with nonmetal stay-warm case, this nonmetal stay-warm case periphery is provided with heated constant temperature cover, on this heated constant temperature cover, be provided with heater.
In order to prevent the interference of rf excitation signal to rubidium clock other parts, the radome that is positioned at heated constant temperature cover and heater periphery is installed on described RF oscillatory circuit box.
Consider the convenience of enforcement, described RF oscillatory circuit box is a side opening structure, at its opening part, RF oscillatory circuit lid plate is installed.
As preferably, described bulb tail pipe holder is formed by metal material manufacture; Described starter gas is xenon or Krypton.
Compared with prior art, the present invention has following beneficial effect:
(1) in the present invention, by ingehious design and the installation of rubidium spectral lamp, oscillator coil, nonmetal stay-warm case, heated constant temperature cover, heater, nonmetal thermal insulation layer, radome etc., make overall structure comparatively stable, and the signal between each several part disturbs, heat transmission etc. all can be effectively suppressed, thereby guarantee the stability of device performance, design very ingenious, realistic demand.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
In above-mentioned accompanying drawing, the component names that Reference numeral is corresponding is as follows:
1-rubidium spectral lamp, 2-oscillator coil, the nonmetal stay-warm case of 3-, 4-heated constant temperature cover, 5-heater, 6-radome, the nonmetal thermal insulation layer of 7-, 8-bulb tail pipe holder, 9-RF oscillatory circuit, 10-RF oscillatory circuit box, 11-RF oscillatory circuit lid plate.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
Have much room for improvement in order to solve the rubidium atomic frequency standard spectral lamp stability existing in prior art, easily there is superheating phenomenon, have a strong impact on the problem of its service behaviour, as shown in Figure 1, the invention discloses a kind of rubidium spectral lamp device being adapted under vacuum condition, mainly comprise thermal design and structural design.
This device comprises:
The rubidium spectral lamp 1 that adopts alkali-proof glass to make, the inside is filled and is shaped with starter gas (xenon, Krypton etc.) and rubidium 87 metals, rubidium 87 metallic atoms are luminous under the excitation of starter gas and the radiofrequency signal by oscillator coil 2 feed-ins, for Rb atom frequency marking provides light source, when enforcement, the temperature of rubidium spectral lamp should be stabilized in more than 110 DEG C, due to value difference corresponding to different rubidium atomic clock complete machines, thereby occurrence needs debugging, the too high or too low Rb atom frequency marking performance that all can affect;
Be wound on the oscillator coil 2 of rubidium spectral lamp 1 outside, the radiofrequency signal feed-in rubidium spectral lamp 1 that it produces RF oscillatory circuit 9, excitation rubidium spectral lamp is luminous;
The nonmetal stay-warm case 3 that is arranged at rubidium spectral lamp periphery, it has insulation effect, improves the stability of rubidium spectral lamp temperature, and can fix rubidium spectral lamp;
Be arranged at the peripheral heated constant temperature cover 4 of nonmetal stay-warm case, carry out temperature debugging;
Be arranged at the heater 5 on heated constant temperature cover, its temperature to heated constant temperature cover is controlled;
Be arranged on the radome 6 of heated constant temperature cover and heater periphery, it prevents that for shielded radio frequency pumping signal its other parts to rubidium clock from producing interference;
Be arranged at the nonmetal thermal insulation layer 7(of RF oscillatory circuit box bulb mounting tail pipe holder one side as heat insulating mattress), the temperature impact of isolated rubidium spectral lamp on RF oscillatory circuit, guarantees RF oscillatory circuit reliability of operation;
Be fixed on the bulb tail pipe holder 8 of RF oscillatory circuit box outside, it adopts metal material to make, for fixing rubidium spectral lamp, can make the other parts of rubidium spectral lamp tail pipe portion temperature lower than rubidium spectral lamp, form so-called " cold junction ", and then collect metal rubidium 87, prevent that it from flowing in rubidium spectral lamp, improves the stability of rubidium spectral lamp light intensity;
Be arranged on the RF oscillatory circuit 9 in RF oscillatory circuit box, it produces the luminous radiofrequency signal of excitation rubidium spectral lamp, and preferably the frequency of radiofrequency signal is within the scope of 70MHz～150MHz, and power is in 1.5W left and right;
RF oscillatory circuit box 10 and RF oscillatory circuit lid plate 11, for fixed RF oscillating circuit, shielded radio frequency oscillator signal simultaneously.
Because the temperature of rubidium spectral lamp should be more than 110 DEG C, the temperature of RF oscillatory circuit is more low better: temperature is lower, electronic devices and components reliability on RF oscillatory circuit is higher, thereby adopt nonmetal heat insulating mattress can make the temperature of RF oscillatory circuit under vacuum lower more than 40 DEG C than the temperature of rubidium spectral lamp, the design of this nonmetal thermal insulation layer is only effective under vacuum condition, and under condition of normal pressure, effect of heat insulation will reduce greatly.
Because rubidium spectral lamp can heat under the effect of RF excited coil, but temperature is uncontrollable, the present invention has designed dexterously by rubidium spectral lamp, oscillator coil, nonmetal stay-warm case, heated constant temperature cover, the heat structure that heater forms, by regulating the thermal resistance between rubidium spectral lamp and heated constant temperature cover, can effectively ensure that when heater does not heat under vacuum condition, the temperature of rubidium spectral lamp is less than 110 DEG C, and then by heater, heated constant temperature cover is warming up to uniform temperature, thereby improve the temperature of rubidium spectral lamp, make it possible to reach the temperature of commissioning requirements, thereby maximum possible rubidium spectral lamp is incubated, to ensure not overheated simultaneously.
According to above-described embodiment, just can realize well the present invention.
Claims (5)
1. be applicable to the rubidium atomic frequency standard spectral lamp device of vacuum condition, it is characterized in that, comprise RF oscillatory circuit box (10), be arranged on the RF oscillatory circuit (9) in RF oscillatory circuit box (10), be fixed on the outside bulb tail pipe holder (8) of RF oscillatory circuit box (10), afterbody is arranged on bulb tail pipe holder (8), inside is filled and is shaped with starter gas and rubidium 87 metals, outside is wound with the rubidium spectral lamp (1) of oscillator coil (2), described RF oscillatory circuit box (10) bulb mounting tail pipe holder (8) one sides are provided with nonmetal thermal insulation layer (7), rubidium spectral lamp (1) periphery is provided with nonmetal stay-warm case (3), this nonmetal stay-warm case (3) periphery is provided with heated constant temperature cover (4), on this heated constant temperature cover, be provided with heater (5).
2. the rubidium atomic frequency standard spectral lamp device that is applicable to vacuum condition according to claim 1, is characterized in that, is provided with and is positioned at heated constant temperature cover (4) and the peripheral radome (6) of heater (5) on described RF oscillatory circuit box (10).
3. the rubidium atomic frequency standard spectral lamp device that is applicable to vacuum condition according to claim 2, is characterized in that, described RF oscillatory circuit box (10) is a side opening structure, at its opening part, RF oscillatory circuit lid plate (11) is installed.
4. the rubidium atomic frequency standard spectral lamp device that is applicable to vacuum condition according to claim 3, is characterized in that, described bulb tail pipe holder (8) is formed by metal material manufacture.
5. the rubidium atomic frequency standard spectral lamp device that is applicable to vacuum condition according to claim 4, is characterized in that, described starter gas is xenon or Krypton.
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| CN201410107421.4A CN103836421B (en) | 2014-03-21 | 2014-03-21 | Be applicable to the rubidium atomic frequency standard spectral lamp device of vacuum condition |
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| CN201410107421.4A CN103836421B (en) | 2014-03-21 | 2014-03-21 | Be applicable to the rubidium atomic frequency standard spectral lamp device of vacuum condition |
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| CN103836421A true CN103836421A (en) | 2014-06-04 |
| CN103836421B CN103836421B (en) | 2016-01-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332385A (en) * | 2014-09-03 | 2015-02-04 | 上海通用卫星导航有限公司 | Cesium spectral lamp device used for cesium optical pump magnetometer |
| CN107193204A (en) * | 2016-12-14 | 2017-09-22 | 北京无线电计量测试研究所 | A kind of miniature physical system of chip atomic clock |
| CN109470359A (en) * | 2018-11-09 | 2019-03-15 | 成都天奥电子股份有限公司 | The method that the rubidium spectral lamp device and optical noise difference for providing difference light output inhibit |
| CN110260200A (en) * | 2019-06-06 | 2019-09-20 | 中国科学院武汉物理与数学研究所 | Open integrated small rubidium spectral lamp for small Rb atom frequency marking |
| CN111181549A (en) * | 2019-12-26 | 2020-05-19 | 兰州空间技术物理研究所 | Rubidium clock temperature coefficient optimization method |
| CN116107186A (en) * | 2023-04-04 | 2023-05-12 | 成都量子时频科技有限公司 | Integrated closed ultrathin rubidium spectrum lamp device applied to miniaturized rubidium atomic clock |
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2014
- 2014-03-21 CN CN201410107421.4A patent/CN103836421B/en active Active
Patent Citations (4)
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332385A (en) * | 2014-09-03 | 2015-02-04 | 上海通用卫星导航有限公司 | Cesium spectral lamp device used for cesium optical pump magnetometer |
| CN107193204A (en) * | 2016-12-14 | 2017-09-22 | 北京无线电计量测试研究所 | A kind of miniature physical system of chip atomic clock |
| CN109470359A (en) * | 2018-11-09 | 2019-03-15 | 成都天奥电子股份有限公司 | The method that the rubidium spectral lamp device and optical noise difference for providing difference light output inhibit |
| CN110260200A (en) * | 2019-06-06 | 2019-09-20 | 中国科学院武汉物理与数学研究所 | Open integrated small rubidium spectral lamp for small Rb atom frequency marking |
| CN111181549A (en) * | 2019-12-26 | 2020-05-19 | 兰州空间技术物理研究所 | Rubidium clock temperature coefficient optimization method |
| CN111181549B (en) * | 2019-12-26 | 2024-01-30 | 兰州空间技术物理研究所 | Rubidium clock temperature coefficient optimization method |
| CN116107186A (en) * | 2023-04-04 | 2023-05-12 | 成都量子时频科技有限公司 | Integrated closed ultrathin rubidium spectrum lamp device applied to miniaturized rubidium atomic clock |
| CN116107186B (en) * | 2023-04-04 | 2023-09-01 | 成都量子时频科技有限公司 | Integrated closed ultrathin rubidium spectrum lamp device applied to miniaturized rubidium atomic clock |
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| CN103836421B (en) | 2016-01-13 |
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