CN102299714B - Microwave cavity bubble device - Google Patents
Microwave cavity bubble device Download PDFInfo
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- CN102299714B CN102299714B CN 201110183261 CN201110183261A CN102299714B CN 102299714 B CN102299714 B CN 102299714B CN 201110183261 CN201110183261 CN 201110183261 CN 201110183261 A CN201110183261 A CN 201110183261A CN 102299714 B CN102299714 B CN 102299714B
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Abstract
The invention discloses a microwave cavity bubble device, belonging to the field of atomic frequency standards, wherein the microwave cavity bubble device comprises an integrated light filtering absorption bubble, a microwave cavity, a photovoltaic cell, a temperature control component, a magnetic induction loop, a magnetic screen and a printed board; the integrated light filtering absorption bubble is positioned in the microwave cavity; the magnetic screen is arranged out of the microwave cavity; the temperature control component is installed on the microwave cavity; the microwave cavity comprises a cavity cover, a cavity body and a coupling loop; the middle part of the cavity cover is provided with a gated grating; the coupling loop is fixed on the cavity cover and is positioned on a central axis of the cavity cover; the photovoltaic cell and the printed board are installed on the cavity cover; the magnetic induction loop is arranged at the periphery of a cavity; a support component is clamped between the integrated light filtering absorption bubble and the bottom part of the cavity, and the expansion coefficient of the support component is greater than that of the microwave cavity. According to the invention, through the arrangement of the support component between the integrated light filtering absorption bubble and the bottom part of the cavity, and the expansion coefficient of the support component is greater than that of the microwave cavity, the influences on the microwave cavity resonant frequency by the changes of temperature can be reduced, thus the degree of stability of the output frequency of a rubidium atomic frequency standard is improved.
Description
Technical field
The present invention relates to the atomic frequency standard field, particularly a kind of microwave cavity bubble device.
Background technology
Quantized system is the important component part of atomic frequency standard, be used under the effect of microwave interrogation signals, output has the light inspection signal of kam-frequency characteristic, is locked on the atom resonance frequency by the output of this light inspection signal with the quartz oscillation crystal, guarantees the stable output of atomic frequency standard.Typical quantized system generally is made of spectroscopic lamp and microwave cavity bubble device two parts.
Existing microwave cavity bubble device generally includes the bubble that filters, absorbs bubble, microwave cavity, photocell, heated constant temperature parts, C field coil and magnetic cup.Its operation principle is as follows: under the effect of spectroscopic lamp exciting light, at first filtered and atomic resonance by the bubble that filters, absorption bubble; Photocell is surveyed the transmitted light after the bubble that filters, the effect of absorption bubble, output light inspection signal.The microwave field that atomic resonance is required and weak magnetostatic field are provided by microwave cavity and C field coil respectively.And the heated constant temperature parts are arranged on microwave cavity, are mainly used in as the bubble that filters, absorb the operational environment that bubble provides temperature constant.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Because the temperature effect in chamber is very obvious, in the situation that variation of ambient temperature is larger, aforementioned heated constant temperature parts can not be kept the temperature constant of microwave cavity, and the size of microwave cavity is understood temperature influence and changed.And the resonance frequency of microwave cavity depends on the factors such as the shape, size, mode of resonance of microwave cavity.When the change in size of microwave cavity, its resonance frequency will depart from the atomic transition spectral line frequency, thereby cause output frequency unstable of atomic frequency standard.
Summary of the invention
For in the situation that variation of ambient temperature, improve the stability of the output frequency of atomic frequency standard, the embodiment of the present invention provides a kind of microwave cavity bubble device.Described technical scheme is as follows:
A kind of microwave cavity bubble device, comprise that integrated filtering absorbs bubble, microwave cavity, photocell, temperature control parts, magnetic induction loop, magnetic cup and printed board, described integrated filtering absorbs bubble and is positioned at described microwave cavity, described magnetic cup is arranged on outside described microwave cavity, and described temperature control parts are arranged on described microwave cavity;
Described microwave cavity comprises chamber lid, cavity and coupling loop, and the middle part of described chamber lid is provided with logical grating; Described coupling loop is fixed on described chamber and covers and be positioned on the central axis of described chamber lid; Described photocell and printed board are arranged on described chamber and cover; It is peripheral that described magnetic induction loop is located at described cavity; Be folded with support component between the bottom of described integrated filtering absorption bubble and described cavity, the coefficient of expansion of described support component is greater than the coefficient of expansion of described microwave cavity.
Wherein, described temperature control parts comprise thermistor and heater strip, and described thermistor is arranged on described chamber and covers, and the direction of routing of described thermistor is described cavity axis direction; The sidewall of described cavity is provided with groove, and described heater strip adopts the twisted-pair feeder form and is looped around in described groove.
Preferably, the inwall of described integrated filtering absorption bubble scribbles paraffin layer.
Wherein, described magnetic cup comprises interior magnetic cup, outer magnetic cup and base, is respectively equipped with on described base be used to the draw-in groove of placing described interior magnetic cup, outer magnetic cup and microwave cavity, and described interior magnetic cup is between described microwave cavity and described outer magnetic cup.
Further, be provided with the first fixture between described chamber lid and described interior magnetic cup, be provided with the second fixture between described interior magnetic cup and described outer magnetic cup.
Wherein, described magnetic induction loop comprises the magnetic induction coil cylinder and is wound on the outer double-layer coil of described magnetic induction coil cylinder.
Preferably, described microwave cavity adopts the TE011 mould design of cylindrical cavity.
Wherein, described photocell comprises two photocells, and described two photocell symmetries are positioned over the both sides of described coupling loop.
Preferably, described support component, microwave cavity adopt respectively alloy material to make.
Further, described chamber covers and also is provided with tuning screw.
Further, described microwave cavity bubble device also comprises the base plate that is placed between described integrated filtering absorption bubble and described support component.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: between bubble, support component is set by filtering in the bottom of described microwave cavity and integrated resonance, the coefficient of expansion of described support component is greater than the coefficient of expansion of described microwave cavity; When ambient temperature raises, microwave cavity becomes large along its cross-sectional direction simultaneously with size axial direction, simultaneously, support component also extends, and geometrical extension is greater than the geometrical extension of microwave cavity, thereby actual chamber height is shortened on the contrary, in the situation that become large along the size of cross-sectional direction, the constancy of volume that can keep microwave cavity, thereby the resonance frequency of microwave cavity is remained unchanged, in like manner, when ambient temperature descends, the resonance frequency of microwave cavity also can remain unchanged, thereby improves the stability of the output frequency of atomic frequency standard.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, during the below will describe embodiment, the accompanying drawing of required use is done to introduce simply, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of microwave cavity bubble device of providing in the embodiment of the present invention;
Fig. 2 is the structural representation of the chamber lid of a kind of microwave cavity bubble device shown in Figure 1;
Fig. 3 is the structural representation of the magnetic induction coil of a kind of microwave cavity bubble device shown in Figure 1;
Fig. 4 is the structural representation of heater strip of the microwave cavity of a kind of microwave cavity bubble device shown in Figure 1;
Fig. 5 is the electromagnetic field distribution schematic diagram of the microwave cavity of a kind of microwave cavity bubble device shown in Figure 1;
Fig. 6 is the magnetic cup structural representation of a kind of microwave cavity bubble device shown in Figure 1;
In accompanying drawing, the component list of each label representative is as follows:
Integrated filtering absorbs bubble 1, microwave cavity 2, photocell 3a, 3b, thermistor 4, heater strip 5, magnetic induction loop 6, line outlet 7, printed board 8, chamber lid 9, cavity 10, tuning screw 11, coupling loop 12, support component 13, base plate 14, base 15, magnetic induction coil cylinder 16, double-layer coil 17, hold-down screw 18, interior magnetic cup 19, outer magnetic cup 20, the first fixture 21a, the second fixture 21b, logical grating 22, draw-in groove 23.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of microwave cavity bubble device, this microwave cavity bubble device comprises that integrated filtering absorbs bubble 1, microwave cavity 2, photocell, temperature control parts, magnetic induction loop 6, magnetic cup and printed board 8, described integrated filtering absorbs bubble 1 and is positioned at described microwave cavity 2, described magnetic cup is arranged on outside described microwave cavity 2, and described temperature control parts are arranged on described microwave cavity 2.Described microwave cavity 2 comprises chamber lid 9, cavity 10 and coupling loop 12, and the middle part of described chamber lid 9 is provided with logical grating 22; Described coupling loop 12 is fixed on described chamber lid 9 and is positioned on the central axis of described chamber lid 9; Described photocell and printed board 8 are arranged on described chamber lid 9; Described magnetic induction loop 6 is located at described cavity 10 peripheries, and described integrated filtering absorbs between the bottom of bubble 1 and described cavity 10 and is folded with support component 13, and the coefficient of expansion of described support component 13 is greater than the coefficient of expansion of described microwave cavity 2.
Wherein, described support component 13 changes frequently for the chamber that compensation causes because of variations in temperature.Wherein, described coupling loop 12 is used to the O-O microwave resonance transition of atomic hyperfine that magnetic coupling is provided; Described magnetic induction loop 6 is used to integrated filtering to absorb bubble 1 Atom energy level transition and quantization axle is provided; Described temperature control parts are used to integrating filtering to absorb the operational environment that bubble 1 provides constant temperature; Described photocell completes light signal is converted into the signal of telecommunication and exports by described printed board 8 simultaneously for detection of the penetrating light intensity of microwave cavity 2.
Particularly, the outer wall that the inwall of described cavity 10 and described integrated filtering absorb bubble 1 closely cooperates, and described integrated filtering absorption bubble 1 can be in the interior slip of microwave cavity 2.Further, described integrated filtering absorbs bubble 1 and the coaxial setting of described microwave cavity 2.
Particularly, described microwave cavity 2 can adopt the high metal of thermal conductivity to make, and described support component 13 can adopt alloy material to make.
Particularly, described coupling loop 12 1 ends are connected with the coaxial cable core wire that is fixed well, the other end is fixed on the central axis of described chamber lid 9 by the hold-down screw (not shown), and are placed in described integrated filtering and absorb bubble 1 top.Described coaxial cable core wire is used for being connected with external circuit, introduces microwave signal, and this knows for those skilled in the art, does not repeat them here.
Further, also be provided with tuning screw 11 on described chamber lid 9, the axis direction of described tuning screw 11 is identical with the axis direction of described cavity 10.Due to machining error, actual resonance frequency and the result of calculation of described microwave cavity 2 have different, can finely tune (the fine setting scope is probably within 100MHz) to resonance frequency by changing the length of tuning screw 11 in the chamber.
Preferably, the inwall that described integrated filtering absorbs bubble 1 scribbles paraffin layer, is used for weakening the atom relaxation effect.Described microwave cavity bubble device also comprises the base plate 14 that is placed between described integrated filtering absorption bubble 1 and described support component 13.The area of described base plate 14 is less than the sectional area of described cavity 10, thereby can move along the axis direction of described microwave cavity 2.Described base plate 14 also can adopt the alloy material manufacturing.
In embodiments of the present invention, integrated filtering absorbs bubble 1 and adopts Integrated design, and original optical filtering bubble and absorption bubble are integrated into a bubble, is beneficial to like this miniaturization of microwave cavity bubble device; Operation material in bubble be natural rubidium (
87Rb and
85Rb respectively accounts for 27.8% and 72.2%); The first half of bubble mainly plays filter action, and latter half mainly plays resonant interaction; And, be filled with buffer gas in order to reduce live width, to improve optical pumping efficient, can absorbing in bubble 1 at integrated filtering.Easily know, the gas that integrated filtering absorbs in bubble 1 can be also caesium etc.
Particularly, referring to Fig. 3, described magnetic induction loop 6 is made of magnetic induction coil cylinder 16 and double-layer coil 17; Described magnetic induction coil cylinder 16 is set in outside described cavity 10, and double-layer coil 17 is wound on outside described magnetic induction coil cylinder 16.Double-layer coil 17 is the double lacquered wire circle, and is convenient unified from line outlet 7 outlets.
In conjunction with Fig. 1 and Fig. 4, the lateral wall of the cavity 10 of described microwave cavity is provided with groove, described temperature control parts comprise thermistor 4 and heater strip 5, described thermistor 4 is arranged on described chamber lid 9, be used for the induced environment temperature, and the ambient temperature of sensing is sent in printed board 8 or outside temperature-adjusting circuit, and described heater strip 5 is looped around in described groove, and temperature-adjusting circuit is microwave cavity 2 heating according to the signal controlling heater strip 5 of thermistor 4.Further, the direction of routing of described thermistor 4 is described cavity 10 axis directions, and described heater strip 5 adopts the twisted-pair feeder form, thereby can eliminate the magnetic field longitudinal component that heating current produces, and has avoided the remanent magnetism of temperature control parts on the impact of frequency marking index.
In embodiments of the present invention, microwave cavity 2 adopts the TE011 mould design of cylindrical cavity, is used to
87The microwave transition of Rb atomic ground state fine structure provides suitable microwave field, and its resonance frequency is consistent with atomic transition frequency as the reference of quantum frequency discrimination.Obviously, microwave cavity 2 also can adopt the designs such as TE111 mould.
As shown in Figure 5, the Distribution of Magnetic Field in microwave cavity 2 is for vertically, and in axial direction parallel, and integrated filtering absorbs bubble 1 and is placed on chamber central authorities, can obtain stronger magnetic field excitation like this, facilitates the hyperfine O-O transition of atom.In addition, in the chamber, microwave electric field distributes parallel with the horizontal tangent plane of cylindrical cavity, even two of cylindrical cavity ports are due to the chamber not driving fit of cylinder of uncapping and logical grating 22 causes like this, also can not cut off microwave electric field and cause electromagnetic consumable, instant microwave electric field and atomic interaction and stimulated radiation feedback.
Particularly, referring to Fig. 2, described photocell comprises photocell 3a and photocell 3b, and described photocell 3a and photocell 3b symmetry are positioned over the both sides of described coupling loop 12.As can be seen from Figure 5, in microwave cavity, the intensity of the longitudinal component of microwave magnetic field is the strongest in coupling loop both sides, so descend in working order atomic resonance transition signal the strongest place on the cavity both sides, therefore photocell is arranged on symmetrically the both sides of central axis, can obtain signal to noise ratio preferably like this.Further, described photocell is fixed in printed board 8, and described printed board 8 is fixed on chamber lid 9 by hold-down screw 18.Arrange electronic component and circuit in described printed board 8, be used for receiving the signal of telecommunication of photocell 3a, 3b, completed measuring ability; Also be used for consisting of the loop with described heater strip 5 and described thermistor 4, complete temperature control.
Particularly, referring to Fig. 1 and Fig. 6, described magnetic cup comprises interior magnetic cup 19, outer magnetic cup 20 and base 15, is respectively equipped with on described base 15 be used to the draw-in groove 23 of placing described interior magnetic cup 19, outer magnetic cup 20 and microwave cavity 2, and described interior magnetic cup 19 is between described microwave cavity 2 and described outer magnetic cup 20.This structure can prevent external magnetic field (as earth magnetism) on atomic energy in the TE011 cylindrical cavity and division and the impact of " quantization axle ".
Further, between described chamber lid 9 and described interior magnetic cup 19, correspondence is provided with the first fixture 21a, thereby described microwave cavity 2 and described interior magnetic cup 19 are fixed together, between described interior magnetic cup 19 and described outer magnetic cup 20, correspondence is provided with the second fixture 21b, thereby described interior magnetic cup 19 and outer magnetic cup 20 are fixed together.Particularly, described the first fixture 21a, the second fixture 21b can be the spring bayonet apparatus.
The microwave cavity bubble device of the embodiment of the present invention has the following advantages: the first, between the bottom of integrated filtering absorption bubble and cavity, support component is set, the coefficient of expansion of described support component is greater than the coefficient of expansion of described microwave cavity; When ambient temperature raises, microwave cavity becomes large along its cross-sectional direction simultaneously with size axial direction, simultaneously, support component also extends, and the geometrical extension of support component is greater than the geometrical extension of microwave cavity, thereby actual chamber height is shortened on the contrary, in the situation that become large along the size of cross-sectional direction, the constancy of volume that can keep microwave cavity, thereby the resonance frequency of microwave cavity is remained unchanged, in like manner, when ambient temperature descends, the resonance frequency of microwave cavity also can remain unchanged, thereby improves the stability of the output frequency of Rb atom frequency marking.The second, integrated filtering absorbs bubble employing Integrated design, and original optical filtering bubble and absorption bubble are integrated into a bubble, is beneficial to the miniaturization of microwave cavity bubble device; Three, microwave cavity adopts the TE011 mould design of cylindrical cavity, quality factor Q value is high, and another advantage of TE011 mould is there is no axial current, like this, even two ports of cylindrical cavity are due to the chamber not driving fit of cylinder of uncapping and logical grating causes, also can not cut off microwave electric field and cause electromagnetic consumable, instant microwave electric field and atomic interaction and stimulated radiation feedback; Four, heater strip adopts twisted pair design, and the direction of routing of thermistor is that cavity is axial, has basically eliminated the magnetic field longitudinal component that heating current produces, and has avoided the remanent magnetism of temperature control parts to the deterioration of atomic frequency standard index.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. microwave cavity bubble device, comprise that integrated filtering absorbs bubble (1), microwave cavity (2), photocell, temperature control parts, magnetic induction loop (6), magnetic cup and printed board (8), described integrated filtering absorbs bubble (1) and is positioned at described microwave cavity (2), described magnetic cup is arranged on outside described microwave cavity (2), and described temperature control parts are arranged on described microwave cavity (2); It is characterized in that,
Described microwave cavity (2) comprises chamber lid (9), cavity (10) and coupling loop (12), and the middle part of described chamber lid (9) is provided with logical grating (22); Described coupling loop (12) is fixed on described chamber lid (9) upward and is positioned on the central axis of described chamber lid (9); Described photocell and printed board (8) are arranged on described chamber lid (9); Described magnetic induction loop (6) is located at described cavity (10) periphery; Described integrated filtering absorbs between the bottom of steeping (1) and described cavity (10) and is folded with support component (13), and the coefficient of expansion of described support component (13) is greater than the coefficient of expansion of described microwave cavity (2).
2. microwave cavity bubble device as claimed in claim 1, it is characterized in that, described temperature control parts comprise thermistor (4) and heater strip (5), described thermistor (4) is arranged on described chamber lid (9), and the direction of routing of described thermistor (4) is described cavity (10) axis direction; The sidewall of described cavity (10) is provided with groove, and described heater strip (5) adopts the twisted-pair feeder form and is looped around in described groove.
3. microwave cavity bubble device as claimed in claim 1, is characterized in that, the inwall that described integrated filtering absorbs bubble (1) scribbles paraffin layer.
4. microwave cavity bubble device as claimed in claim 1, it is characterized in that, described magnetic cup comprises interior magnetic cup (19), outer magnetic cup (20) and base (15), be respectively equipped with on described base (15) be used to the draw-in groove (23) of placing described interior magnetic cup (19), outer magnetic cup (20) and microwave cavity (2), described interior magnetic cup (19) is positioned between described microwave cavity (2) and described outer magnetic cup (20).
5. microwave cavity bubble device as claimed in claim 4, it is characterized in that, be provided with the first fixture (21a) between described chamber lid (9) and described interior magnetic cup (19), be provided with the second fixture (21b) between described interior magnetic cup (19) and described outer magnetic cup (20).
6. microwave cavity bubble device as claimed in claim 1, is characterized in that, described magnetic induction loop (6) comprises magnetic induction coil cylinder (16) and is wound on the outer double-layer coil (17) of described magnetic induction coil cylinder (16).
7. microwave cavity bubble device as claimed in claim 1, is characterized in that, described microwave cavity (2) adopts the TE011 mould design of cylindrical cavity.
8. microwave cavity bubble device as claimed in claim 7, it is characterized in that, described photocell comprises photocell (3a) and photocell (3b), and described photocell (3a) and photocell (3b) symmetry are positioned over the both sides of described coupling loop (12).
9. as the described microwave cavity bubble device of claim 1-8 any one, it is characterized in that, described chamber lid (9) is provided with tuning screw (11).
10. as the described microwave cavity bubble device of claim 1-8 any one, it is characterized in that, comprise that also being arranged at described integrated filtering absorbs the base plate (14) that steeps between (1) and described support component (13).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110183261 CN102299714B (en) | 2011-06-30 | 2011-06-30 | Microwave cavity bubble device |
| PCT/CN2011/076826 WO2013000176A1 (en) | 2011-06-30 | 2011-07-04 | Microwave cavity bubble device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110183261 CN102299714B (en) | 2011-06-30 | 2011-06-30 | Microwave cavity bubble device |
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| CN102299714A CN102299714A (en) | 2011-12-28 |
| CN102299714B true CN102299714B (en) | 2013-05-08 |
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| CN 201110183261 Expired - Fee Related CN102299714B (en) | 2011-06-30 | 2011-06-30 | Microwave cavity bubble device |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103063650A (en) * | 2012-12-17 | 2013-04-24 | 江汉大学 | Improved atomic ground state energy detection device |
| CN103076746B (en) * | 2012-12-17 | 2016-03-30 | 江汉大学 | A kind of control method of wall shift measurement system |
| CN104410412B (en) * | 2014-10-10 | 2017-05-17 | 中国科学院武汉物理与数学研究所 | Dual-bubble microwave cavity for rubidium frequency scale |
| CN105446121A (en) * | 2015-12-10 | 2016-03-30 | 江汉大学 | Physical system |
| CN105846820B (en) * | 2016-03-21 | 2018-08-24 | 中国科学院武汉物理与数学研究所 | A kind of double bulb apparatus of puppet for Rb atom frequency marking |
| CN106129573B (en) * | 2016-08-19 | 2019-01-11 | 中国科学院武汉物理与数学研究所 | A kind of New type atom frequency marking microwave cavity |
| CN107677887A (en) * | 2017-09-25 | 2018-02-09 | 江汉大学 | A kind of frequency displacement measurement apparatus based on storage bubble |
| 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 |
| CN112332840B (en) * | 2021-01-05 | 2021-04-02 | 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 microstrip line structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040202050A1 (en) * | 2003-04-11 | 2004-10-14 | William Happer | Method and system for operating an atomic clock with simultaneous locking of field and frequency |
| US6806784B2 (en) * | 2001-07-09 | 2004-10-19 | The National Institute Of Standards And Technology | Miniature frequency standard based on all-optical excitation and a micro-machined containment vessel |
| CN202160164U (en) * | 2011-06-30 | 2012-03-07 | 江汉大学 | Microwave cavity bubble device |
-
2011
- 2011-06-30 CN CN 201110183261 patent/CN102299714B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6806784B2 (en) * | 2001-07-09 | 2004-10-19 | The National Institute Of Standards And Technology | Miniature frequency standard based on all-optical excitation and a micro-machined containment vessel |
| US20040202050A1 (en) * | 2003-04-11 | 2004-10-14 | William Happer | Method and system for operating an atomic clock with simultaneous locking of field and frequency |
| CN202160164U (en) * | 2011-06-30 | 2012-03-07 | 江汉大学 | Microwave cavity bubble device |
Non-Patent Citations (1)
| Title |
|---|
| 从CPT原子钟到光钟;邱实;张军海;《中国科学院上海天文台年刊 》;20071231(第28期);166－171 * |
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