CN101237077A - Small Rb atom frequency marking cavity bubble system - Google Patents
Small Rb atom frequency marking cavity bubble system Download PDFInfo
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- CN101237077A CN101237077A CNA2008100452982A CN200810045298A CN101237077A CN 101237077 A CN101237077 A CN 101237077A CN A2008100452982 A CNA2008100452982 A CN A2008100452982A CN 200810045298 A CN200810045298 A CN 200810045298A CN 101237077 A CN101237077 A CN 101237077A
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Abstract
The present invention discloses a miniaturized rubidium atomic frequency standard cavity-cell system, wherein, a microwave cavity cylinder is made from high magnetic permeability material; the microwave cavity cylinder is sleeved with a heating cylinder; a pump light incident port of the heating cylinder is also provided with a convex lens which gathers and transmits rays emitted by a rubidium spectral lamp into a microwave cavity; a C field coil is directly wound on a dielectric cylinder arranged between the microwave cavity cylinder and an absorption cell; a cusp on the tail part of a light-filtering cell is concentrated at the center of a circular plane at the end of the cell; a cusp on the tail part of the absorption cell is concentrated at the edge of a circular plane at the end of the cell; a photocell and a snap-off diode are fixed on the end face of the inner wall of a cavity end cover which can be movably fixed. The present invention has no machinery regulating rod inside the cavity, uses an intracavity frequency doubling mode, adopts a cylindrical TE111 mode and a dielectric filling method to get rid of the complex structure of a magnetic shield cylinder in the prior art, and reduces the volume of the cavity-cell system. As the pump light incident port of the heating cylinder is provided with the convex lens to increase the light intensity of pump light, the performance of the cavity-cell system is guaranteed. A mobile photoelectric component is adopted for cavity frequency fine adjustment, which is convenient for debugging and cannot cause field form distortion.
Description
Technical field
The present invention relates to a kind of Rb atom frequency marking that can be widely used in fields such as communication, location, metering, earthquake measuring, defence engineering, more particularly, the invention relates to the cavity bubble system of small Rb atom frequency marking.
Background of invention
Atomic frequency standard (claiming atomic clock again) provides the equipment of standard frequency and time, because of it has volume characteristics little, in light weight, low in energy consumption, and becomes present most widely used atomic frequency standard.The basic principle of Rb atom frequency marking is to utilize rubidium atomic transition spectral line to remove to lock VCXO, the physical system that is Rb atom frequency marking is examined signal by the light that output has kam-frequency characteristic, behind synchronous phase demodulation, obtain dc error signal and remove to lock VCXO, make the standard output frequency of crystal oscillator have the frequency stability the same with atom.Therefore according to the function difference, Rb atom frequency marking can briefly be divided into electronic system and physical system.The electronic system effect be frequency signal frequency multiplication with VCXO output to rubidium atomic transition frequency, and carry out ditty back input frequently physical system for this frequency signal and go to inquire after atomic transition; Simultaneously, electronic system also carries out the dc error signal that synchronous phase demodulation obtains servo VCXO to the light inspection signal of the frequency discrimination information of carrying of physical system output.The effect of physical system is under the effect of microwave interrogation signals, and output has the light inspection signal of kam-frequency characteristic.Because behind the Rb atom frequency standard locking, its frequency stability is mainly by the physical system decision, so physical system is the core of Rb atom frequency marking.The rubidium atom that participates in resonant transition simultaneously is encapsulated in the cavity bubble system of physical system, so cavity bubble system is again the core component of physical system, and the stability of frequency marking is also mainly determined by cavity bubble system.Simultaneously, physical system occupies the major part of Rb atom frequency marking, and cavity bubble system occupies the physical system major part, so the miniaturization of Rb atom frequency marking then concentrates on the cavity bubble system miniaturization.
The cavity bubble system miniaturization, general mainly undertaken by the miniaturization of bubble and miniaturization two aspects of microwave cavity.The former is general by so-called integrated filtering technology (IFT), it will filter bubble, absorb and steep the volume that method that to close two bubbles be a bubble reduces to steep, but the general meeting of the weak point of this method is with the cost that is reduced to of performance index.Corresponding is that optical filtering bubble and absorption bubble are designed to independently steep separately, is called and separates optical filtering technique (SFT), though this structure has improved the performance index of Rb atom frequency marking, generally can increase the volume of cavity bubble system.Therefore separate optical filtering technique applies to the bigger high-performance Rb atom frequency marking of volume more.The miniaturization in microwave current chamber has the various different chamber pattern of the following stated usually
Another kind is the TE101 chamber in document [Zhao Jiaming etc., metering journal, Vol.13 NO 3 July, 226 (1992)] and United States Patent (USP) [Tae M.Kwon, Thousand Oaks.US.Pat.NO.4.495.478] description.The advantage of this microwave cavity is to realize the microwave cavity of minimum volume, and shortcoming is that sky is square in the cavity, and the space availability ratio that atom is filled is little, and the contact-making surface when placement cylindrical rubidium commonly used steeps is little, the mechanicalness stability is poor.
Also having a kind of is at United States Patent (USP) [Jinquan Deng, Irvine, Calif.US.Pat.NO.6.133.800], non-standard chamber of describing in [Ganghua Mei et al.US.Pat.NO.6.225.870.B1] and [IrvingLiberman et al.US.Pat.NO.5.670.914], their advantage is that volume can be done smallerly, and performance index also can keep than higher, its weak point is the structure more complicated in chamber, and the debugging of chamber frequency is difficulty relatively, is unfavorable for producing in batches.And traditional chamber frequency tuning generally adopts the method for additive regulating bar, and this method can increase the Machine Design complexity usually, also causes the shape distortion of internal field, chamber easily.
The step frequency multiplication mode of improving Rb atom frequency marking also can promote the cavity bubble system miniaturization.Rubidium atomic frequency standard microwave cavity resonator of the prior art is made of resonant ring, support tube, cylindrical cavity, rubidium absorption dunk, rubidium filtering blobs, heating tube, heating pipe holder, C field coil etc. usually.Such as, Chinese patent application number is 200610018124.8, publication number is CN101000974, name is called " rubidium atomic frequency standard microwave cavity resonator " disclosed patent, and Chinese patent application number is 98121645.5, publication number is CN1252628A, and name is called " atomic frequency scale microwave cavity " disclosed patent.Above-mentioned microwave cavity is not all installed snap-off diode, so need additional special cavity external frequency multiplication device, belongs to the cavity external frequency multiplication mode, is unfavorable for reducing of Rb atom frequency marking volume.And the described C field coil of these patents is wound on outside the microwave cavity, and the weak point of this coiling mode is that microwave cavity cannot be used the magnetic cup material, so also need design special magnetic cup tube outside microwave cavity.Next is its will filter bubble and absorb bubble afterbody tip and be arranged on its cylinder side, so just need slot on the cylinder top of support tube and cylindrical cavity, could place the foam tip, can destroy the cavity body structure globality; And it inserts rubidium absorption dunk in the slotted-tube, opens screw at the cylindrical cavity sidepiece, behave affectedly in the hole and finely tunes screw rod frequently, and these modes also may cause the shape distortion of internal field, chamber.
Usually, the prior art cavity bubble system has also comprised slave parts such as coupling loop, photocell, magnetic cup tube and heating constant-temperature equipment.Coupling loop is used for the microwave feed-in microwave cavity with the electronic system generation; Photocell is then gathered the light intensity signal behind the pumping transmittance microwave cavity; The magnetic cup tube is used to shield external magnetic field to be disturbed, and generally adopts the metal material (as iron-nickel alloy, cymbals Mo alloy) of high magnetic permeability to make; Heating constant-temperature equipment heats cavity bubble system on the one hand by power device, makes atom vaporization in the chamber, is convenient to atom and microwave field and interacts; On the one hand also cavity bubble system is carried out constant temperature, to reduce the influence of the atomic resonance frequency that variation of ambient temperature causes.When the Rb atom frequency marking miniaturization Design, above-mentioned slave part also must be taken all factors into consideration could reach design object well.
Summary of the invention
The object of the present invention is to provide a kind ofly can effectively reduce the microwave cavity volume, the chamber frequency tuning is simple, and light intensity is even, can avoid the line distortion of internal field, chamber, and performance index are higher, and are simple in structure, the small Rb atom frequency marking cavity bubble system that is easy to process.
To achieve these goals, a kind of small Rb atom frequency marking cavity bubble system provided by the invention, comprise, a microwave cavity tube and the absorption that together is inserted in the bubble of microwave cavity tube chamber are steeped, bubble filters, the photoelectric subassembly of medium tube and collection atom frequency discrimination signal, and the heating constant-temperature equipment of giving the cavity bubble system temperature control, it is characterized in that: the microwave cavity tube is made by high-permeability material, the microwave cavity jacket casing is equipped with cartridge heater, and closely be assemblied in the cartridge heater, pumping light incident side mouth at cartridge heater also is equipped with the poly-convex lens that are transmitted in the microwave cavity of the rubidium spectral lamp issued light congruence, the C field coil directly is wound on the medium tube that places between microwave cavity tube and the absorption bubble, the afterbody tip that steeps that filters concentrates on the center of steeping the end circular flat, absorb bubble afterbody tip and concentrate on the edge that steeps the end circular flat, photocell and snap-off diode connect firmly on the end cap inwall end face of the chamber of movable fixed.
The present invention has following beneficial effect than prior art.
(1) reduced the microwave cavity volume effectively.The cylindrical TE111 pattern cylindrical microwave chamber that the present invention adopts the high magnetic permeability metal material to make the microwave cavity tube and fill based on pottery, and adopt the intracavity frequency doubling mode can reduce the volume in chamber effectively.The main modular form of this cylindrical cavity is TE111, can avoid the pattern of other type of microwave excitation and reduce the design and debugging difficulty.Wherein the C field coil directly is wound on the medium tube, also avoided being wound on outside the microwave cavity because of the C field coil of prior art, cannot use magnetic cup material microwave cavity, and need be outside microwave cavity one of specialized designs be unfavorable for the deficiency of the labyrinth of the magnetic cup tube that volume reduces.Promptly the largest benefit of design is to abandon the custom-designed magnetic cup tube of prior art like this, helps reducing the cavity bubble system volume and reduces cost of manufacture.Snap-off diode is installed in carries out intracavity frequency doubling in the microwave cavity, can remove traditional cavity external frequency multiplication device.
(2) simple in structure, volume is little, is easy to processing, has reduced production cost.Adopt common aluminum alloy design separately, be enclosed within on the microwave cavity tube and close-fitting with it cartridge heater has not only been realized the constant temperature to cavity bubble system, also make the complete through engineering approaches of this cavity bubble system simultaneously, cost is further reduced.
Relative electric constant fill to be situated between in the chamber up to 10 Al
2O
3Ceramic material not only can increase medium and fill and to reduce the microwave cavity volume, and low price, is easy to processing, is beneficial to production cost and reduces; This ceramic material also has good heat conductivility and heat stability simultaneously, the long-time stability that help absorbing the Fast Heating of bubble and improve Rb atom frequency marking.
(3) light intensity is even in the chamber, the performance index height.The separation that the present invention adopts filters, and when above-mentioned realization volume reduces, has also kept the performance of cavity bubble system.In separating optical filtering technique enforcement, bubble and absorb both bubble tail tips of bubble and carried out special design especially also will filter: the bubble tail tip design of the bubble that filters is at the end face center, can avoid also having certain light simultaneously and converging effect because of the outstanding globality of medium tube and the design difficulty of processing that increases the chamber of destroying of bubble tail tip at end face; Absorb the design of bubble tail tip outside end face, can avoid the light intensity that receives because of photocell that bubble tail tip glass deformation causes inhomogeneous to a great extent.The microwave cavity inner surface has been carried out gold-plated or silver-plated processing improved performance to reduce lossy microwave.The Al that adopts
2O
3The ceramic material microwave loss is little, also helps guaranteeing the microwave cavity performance.
(4) pumping light light intensity amplitude requirement is reduced.The present invention is transmitted in the microwave cavity after the pumping light that the convex lens that cartridge heater pumping light incident side mouth installs additional are sent out rubidium spectral lamp converges, and can reduce cavity bubble system to pumping light light intensity amplitude requirement, and then can reduce the power of rubidium spectral lamp indirectly.Simultaneously, convex lens can also be isolated hot road, reduce the temperature control influence of the higher rubidium spectral lamp of temperature to the lower cavity bubble system of temperature; Also pumping light is produced certain collimating effect, make light intensity more even.
(5) chamber is debugged convenient frequently and can not caused a shape distortion.The present invention adopts the moving photoconductor assembly to realize the chamber frequency tuning.Photoelectric subassembly not only plays the microwave feed-in, adopts light inspection signal, still is a blind end of microwave cavity tube simultaneously.The method that the present invention adopts in chamber slip photoelectric subassembly to change cavity volume reaches the purpose of tuning microwave chamber frequency.This method has then reduced the complexity that increases Machine Design owing to do not add the prior art mechanical adjustment bar that causes electromagnetic field shape distortion in the chamber easily in the chamber, makes the chamber frequency tuning simple, has also avoided the line distortion of internal field, chamber.
Description of drawings
For further specifying preferred embodiment of the present invention, and after conjunction with figs. is specified in, so that be easier to understand for the present invention.But the following stated is only for being used for explaining preferred embodiment of the present invention; be not that attempt is done any pro forma restriction to the present invention according to this; every based on creative spirit of the present invention, any type of modification or the change done all must belong to the category that the invention is intended to protect.
Fig. 1 is the cross-sectional schematic that the present invention has partial enlarged drawing.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the schematic perspective view of cutting open of the present invention.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is described further:
Fig. 1～Fig. 3 has described by the most preferred embodiment that absorbs bubble 1, filter bubble 2, medium tube 3, microwave cavity tube 9, photoelectric subassembly, C field coil 4 and heating constant-temperature equipment are formed the small Rb atom frequency marking cavity bubble system of step frequency multiplication mode in the chamber.Cylindrical microwave chamber tube 9 based on cylindrical TE111 pattern adopts the high magnetic permeability metal material to make.Described high magnetic permeability metal material can be iron-nickel alloy or cymbals Mo alloy, can also be pure iron.Improve performance for reducing lossy microwave, microwave cavity 9 inner surfaces can be coated with gold layer or silver layer.One end of microwave cavity tube 9 is that to place passage as the chamber inner part be complete open end, and the other end is the semi-open end that leaves a diameter logical light circular hole littler than microwave cavity tube 9 diameters.Microwave cavity tube 9 covers are put in the axocoel of cartridge heater 10, and closely are assemblied in the cartridge heater.Cartridge heater 10 can be made by common alloy aluminum or copper material.Heating constant-temperature equipment is made up of cartridge heater 10 and the thermistor and the power transistor that are contained on the cartridge heater 10 cylinder sides.Thermistor and power transistor are installed on the cartridge heater 10.Thermistor and the power crystal through hole by processing on the cartridge heater 10 cylinder sides radially extends along it and to fix in its hole, is connected (not shown) on the circuit board of frequency marking.C field coil 4 directly is wound on the medium tube 3, and inserts microwave cavity tube 9 and the gap of filtering and steeping 1, absorbing bubble 2 together with medium tube 3.The bubble 1 that filters is two independently choristas with absorbing bubble 2, and overlapping in twos being assembled together, and when adopting integrated filtering, two bubbles then are combined into a bubble and are called the absorption bubble.Separate when filtering, the afterbody tip of the bubble 2 that filters concentrates on the center of steeping the end circular flat, absorbs bubble 1 afterbody tip and concentrates on the edge that steeps the end circular flat, and both are filled the Al of dielectric constant up to 10 in microwave cavity tube 9 chambeies
2O
33 isolation of ceramic material medium tube, and be inserted into together in the microwave cavity tube 9.Form photoelectric subassembly on chamber end cap 7 end faces by photocell 6, coupling loop 8, snap-off diode 5 and movable fixed.Chamber end cap 7 can move fixing at microwave cavity tube 9, and in order to tuning microwave chamber frequency, feed-in microwave and collection atom frequency discrimination signal, and the method for the welding of the fixedly employing between them realizes.Promptly, mobile cavity end cap 7 in microwave cavity tube 9, just at the volume of regulating the inner chamber that forms by chamber end cap 7 and 9 sealings of microwave cavity tube, the frequency of microwave cavity is also followed fine setting, is adjusted to adopt after the optimum welding method that both relative positions of chamber end cap 7 and microwave cavity tube 9 are fixed and finish the frequency trim of microwave cavity.Photocell 6 cements on chamber end cap 7 inner faces by binding agent, and the atom frequency discrimination signal that photocell 6 is gathered is transported to the servo circuit of Rb atom frequency marking as the output signal of object of the present invention.Snap-off diode 5 one ends directly are welded on a side of chamber end cap 7 inner faces, and the other end and coupling loop 8 weld together, and the other end of coupling loop 8 is connected on the frequency multiplier circuit of Rb atom frequency marking as the input of object of the present invention.At the pumping light incident side of cartridge heater 10, be equipped with the poly-convex lens 11 that are transmitted in the microwave cavity of the rubidium spectral lamp issued light congruence, when the further simplified design of needs, also can dispense convex lens 11.Design has mechanical interface 12 on the cartridge heater 10, is used to install cavity bubble system in Rb atom frequency marking Circuits System PCB.When the design that needs are more simplified, also can will absorb bubble and filter and steep the structure that is integrated into a bubble.
Adopt the stable silica gel cementation of physical and chemical performance between each parts such as the optical filtering bubble of microwave cavity, absorption bubble, medium tube, with anti-seismic performance and the long steadily qualitative energy that improves cavity bubble system.In the Figure of description 1, the lead-in wire that is connected with coupling loop 8 is a microwave feed-in line, and what be connected with photocell is the cavity bubble system output line, and they all are connected on the Circuits System of Rb atom frequency marking.
Claims (10)
1, a kind of small Rb atom frequency marking cavity bubble system, comprise, (2) are steeped in a microwave cavity tube and the absorption that together is inserted in the bubble of microwave cavity tube (9) chamber, the photoelectric subassembly that filters and steep (1) medium tube (3) and gather atom frequency discrimination signal, and the heating constant-temperature equipment of giving the cavity bubble system temperature control, it is characterized in that: the microwave cavity tube is made by high-permeability material, the microwave cavity jacket casing is loaded onto cartridge heater, and closely be assemblied in the cartridge heater, at the pumping light incident side mouth of cartridge heater the convex lens that are transmitted to after poly-in the microwave cavity are housed also the rubidium spectral lamp issued light congruence, C field coil (4) directly is wound on the medium tube (3) that places between microwave cavity tube and the absorption bubble, and the afterbody tip of the bubble (2) that filters concentrates on the center of steeping the end circular flat, absorb bubble (1) afterbody tip and concentrate on the edge that steeps the end circular flat, photocell (6) and snap-off diode (5) connect firmly on the chamber of movable fixed end cap (7) inwall end face.
2, small Rb atom frequency marking cavity bubble system according to claim 1 is characterized in that the resonance frequency of cavity bubble system is finely tuned by the moving photoconductor assembly.
3, small Rb atom frequency marking cavity bubble system according to claim 1 is characterized in that medium tube (3) is by alundum (Al (Al
2O
3) ceramic material makes.
4, small Rb atom frequency marking cavity bubble system according to claim 1, it is characterized in that photocell (6) cements on the chamber end cap (7) of movable fixed by binding agent, snap-off diode (5) one ends directly connect firmly the side at the chamber of movable fixed end cap (7) end face, and the other end and coupling loop (8) connect firmly together.
5, small Rb atom frequency marking cavity bubble system according to claim 4 is characterized in that the microwave cavity mode of resonance is TE111.
6, small Rb atom frequency marking cavity bubble system according to claim 1 or 5 is characterized in that convex lens (11) are installed on the actinal surface of cartridge heater (10) near the incident port of pumping light, also can dispense convex lens (11) when structure is more simplified.
7, small Rb atom frequency marking cavity bubble system according to claim 1 is characterized in that described heating constant-temperature equipment is made up of cartridge heater (10) and the thermistor and the power transistor that are contained on cartridge heater (10) the cylinder side.
8, small Rb atom frequency marking cavity bubble system according to claim 7, it is characterized in that thermistor and the through hole of power crystal in the heating constant-temperature equipment by processing on cartridge heater (10) the cylinder side, radially extend along it and to fix in its hole, be connected on the circuit board of Rb atom frequency marking.
9, small Rb atom frequency marking cavity bubble system according to claim 1, it is characterized in that photoelectric subassembly is made up of the chamber end cap (7) of photocell (6), coupling loop (8), snap-off diode (5) and movable fixed, and photocell (6), coupling loop (8), snap-off diode (5) are fixed on the inner face of chamber end cap (7).
10, small Rb atom frequency marking cavity bubble system according to claim 1 is characterized in that microwave cavity (9) inner surface is coated with Gold plated Layer or silver coating.
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| CNA2008100452982A CN101237077A (en) | 2008-01-29 | 2008-01-29 | Small Rb atom frequency marking cavity bubble system |
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| CNA2008100452982A CN101237077A (en) | 2008-01-29 | 2008-01-29 | Small Rb atom frequency marking cavity bubble system |
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| CN102769464A (en) * | 2012-08-08 | 2012-11-07 | 中国科学院武汉物理与数学研究所 | Cavity bubble system of rubidium atom frequency standard |
| WO2013000176A1 (en) * | 2011-06-30 | 2013-01-03 | 江汉大学 | Microwave cavity bubble device |
| CN102970036A (en) * | 2012-11-20 | 2013-03-13 | 中国科学院武汉物理与数学研究所 | Batched rubidium collecting device of small rubidium clock |
| CN103048917A (en) * | 2012-12-21 | 2013-04-17 | 成都天奥电子股份有限公司 | Cylindrical waveguide microwave cavity for rubidium clock |
| CN103152039A (en) * | 2013-01-31 | 2013-06-12 | 江汉大学 | Method for reducing optical frequency shift of rubidium atom frequency scale |
| CN104300979A (en) * | 2014-10-23 | 2015-01-21 | 中国科学院武汉物理与数学研究所 | Rubidium atomic frequency standard bubble frequency control method and system |
| CN104410412A (en) * | 2014-10-10 | 2015-03-11 | 中国科学院武汉物理与数学研究所 | Dual-bubble microwave cavity for rubidium frequency scale |
| CN104733270A (en) * | 2015-03-06 | 2015-06-24 | 兰州空间技术物理研究所 | Rubidium atom clock magnetron microwave cavity |
| CN105242521A (en) * | 2015-11-13 | 2016-01-13 | 中国科学院武汉物理与数学研究所 | Device and method for achieving minitype CPT atomic clock physical system |
| CN106104396A (en) * | 2014-02-06 | 2016-11-09 | 奥罗利亚瑞士股份公司 | device for atomic clock |
| CN108227465A (en) * | 2017-12-21 | 2018-06-29 | 中国科学院国家授时中心 | A kind of pulse laser pumping rubidium clock physical system of low temperature sensibility |
| CN110233622A (en) * | 2019-06-06 | 2019-09-13 | 中国科学院武汉物理与数学研究所 | A kind of small Rb frequency marking physical system |
| CN110311204A (en) * | 2019-06-25 | 2019-10-08 | 中国科学院武汉物理与数学研究所 | A kind of signal feedthrough for Rb atom frequency marking slotted-tube type micro-wave chamber |
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| CN102769464A (en) * | 2012-08-08 | 2012-11-07 | 中国科学院武汉物理与数学研究所 | Cavity bubble system of rubidium atom frequency standard |
| CN102970036A (en) * | 2012-11-20 | 2013-03-13 | 中国科学院武汉物理与数学研究所 | Batched rubidium collecting device of small rubidium clock |
| CN102970036B (en) * | 2012-11-20 | 2015-07-01 | 中国科学院武汉物理与数学研究所 | Batched rubidium collecting device of small rubidium clock |
| CN103048917A (en) * | 2012-12-21 | 2013-04-17 | 成都天奥电子股份有限公司 | Cylindrical waveguide microwave cavity for rubidium clock |
| CN103048917B (en) * | 2012-12-21 | 2015-08-05 | 成都天奥电子股份有限公司 | For the cylindrical waveguide microwave cavity of rubidium clock |
| CN103152039A (en) * | 2013-01-31 | 2013-06-12 | 江汉大学 | Method for reducing optical frequency shift of rubidium atom frequency scale |
| CN106104396A (en) * | 2014-02-06 | 2016-11-09 | 奥罗利亚瑞士股份公司 | device for atomic clock |
| CN106104396B (en) * | 2014-02-06 | 2019-09-13 | 奥罗利亚瑞士股份公司 | Device for atomic clock |
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| CN104410412A (en) * | 2014-10-10 | 2015-03-11 | 中国科学院武汉物理与数学研究所 | Dual-bubble microwave cavity for rubidium frequency scale |
| CN104300979A (en) * | 2014-10-23 | 2015-01-21 | 中国科学院武汉物理与数学研究所 | Rubidium atomic frequency standard bubble frequency control method and system |
| CN104733270A (en) * | 2015-03-06 | 2015-06-24 | 兰州空间技术物理研究所 | Rubidium atom clock magnetron microwave cavity |
| CN105242521B (en) * | 2015-11-13 | 2018-06-08 | 中国科学院武汉物理与数学研究所 | A kind of device and method for realizing miniature CPT atomic clocks physical system |
| CN105242521A (en) * | 2015-11-13 | 2016-01-13 | 中国科学院武汉物理与数学研究所 | Device and method for achieving minitype CPT atomic clock physical system |
| CN108227465B (en) * | 2017-12-21 | 2019-10-18 | 中国科学院国家授时中心 | A kind of pulse laser pumping rubidium clock physical system of low temperature sensibility |
| CN108227465A (en) * | 2017-12-21 | 2018-06-29 | 中国科学院国家授时中心 | A kind of pulse laser pumping rubidium clock physical system of low temperature sensibility |
| CN110233622A (en) * | 2019-06-06 | 2019-09-13 | 中国科学院武汉物理与数学研究所 | A kind of small Rb frequency marking physical system |
| CN110233622B (en) * | 2019-06-06 | 2021-05-28 | 中国科学院武汉物理与数学研究所 | Miniaturized rubidium frequency scale physical system |
| CN110311204A (en) * | 2019-06-25 | 2019-10-08 | 中国科学院武汉物理与数学研究所 | A kind of signal feedthrough for Rb atom frequency marking slotted-tube type micro-wave chamber |
| CN112864566A (en) * | 2021-01-05 | 2021-05-28 | 中国科学院精密测量科学与技术创新研究院 | Subminiature atomic frequency standard microwave cavity based on parallel plate waveguide |
| CN112864566B (en) * | 2021-01-05 | 2022-05-13 | 中国科学院精密测量科学与技术创新研究院 | Subminiature atomic frequency standard microwave cavity based on parallel plate waveguide |
| CN116979963A (en) * | 2023-09-25 | 2023-10-31 | 中国科学院精密测量科学与技术创新研究院 | A thickening integrated form bubble body structure for reducing rubidium atomic frequency standard atmospheric pressure influence |
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