JP2720772B2 - Rubidium atomic oscillator - Google Patents
Rubidium atomic oscillatorInfo
- Publication number
- JP2720772B2 JP2720772B2 JP5287270A JP28727093A JP2720772B2 JP 2720772 B2 JP2720772 B2 JP 2720772B2 JP 5287270 A JP5287270 A JP 5287270A JP 28727093 A JP28727093 A JP 28727093A JP 2720772 B2 JP2720772 B2 JP 2720772B2
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- rubidium
- heater
- gas cell
- atomic oscillator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガスセル型のルビジウ
ム原子発振器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas cell type rubidium atomic oscillator.
【０００２】[0002]
【従来の技術】一般に、この種のガスセル型ルビジウム
原子発振器は、図２に示すように、光マイクロ波共鳴部
である円筒状で透孔１ａを有するキャビティ１と、この
キャビティ１内に挿入されルビジウム金属が封入された
円筒状のガスセル２とが備えられている。ガスセル２
は、誘電損失が少ないガラス例えば石英で形成され、こ
のガスセル２には、液化したルビジウム金属を溜めるた
めの中空状の突部１３が設けられている。キャビティ１
の一端側底面には、光受光素子５が配設され、透孔１ａ
側のキャビティ１外部には、図示を省略したルビジウム
ランプが配設されて、このルビジウムランプからの光
は、キャビティ１の透孔１ａを通って光受光素子５に達
する。2. Description of the Related Art Generally, as shown in FIG. 2, a gas cell type rubidium atomic oscillator of this type is provided with a cylindrical cavity 1 having an optical microwave resonance portion and having a through-hole 1a, and inserted into the cavity 1. And a cylindrical gas cell 2 in which rubidium metal is sealed. Gas cell 2
Is formed of a glass having a small dielectric loss, for example, quartz, and the gas cell 2 is provided with a hollow projection 13 for storing liquefied rubidium metal. Cavity 1
The light receiving element 5 is disposed on the bottom surface on one end side of the
A rubidium lamp (not shown) is provided outside the cavity 1 on the side, and light from the rubidium lamp reaches the light receiving element 5 through the through hole 1a of the cavity 1.
【０００３】また、キャビティ１の透孔１ａ側内部に
は、図示を省略した光マイクロ波を供給するマイクロ波
導入部が配設されている。６はキャビティ１の透孔１ａ
側外側面に配設されガスセル２内のルビジウム金属を暖
めて、ルビジウム金属を気化させるためのトランジスタ
ヒーターである。前記ガスセル２は、突部１３がキャビ
ティ１の他端側、すなわちトランジスタヒーター６側に
突出するようにして、キャビティ１内に挿入されてい
る。[0003] A microwave introduction unit (not shown) for supplying an optical microwave is provided inside the cavity 1 on the side of the through hole 1a. 6 is a through hole 1a of the cavity 1.
A transistor heater disposed on the side outer surface for heating the rubidium metal in the gas cell 2 to vaporize the rubidium metal. The gas cell 2 is inserted into the cavity 1 so that the projection 13 projects toward the other end of the cavity 1, that is, toward the transistor heater 6.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上述し
た従来のルビジウム原子発振器では、キャビティ１に挿
入したルビジウムガスセル２のルビジウム金属を溜める
ための突部１３がトランジスタヒーター６に近接した位
置にある構造となっているため、ルビジウム金属が突部
１３に溜まらずルビジウムガスセル２内に拡散してしま
い、長期的に使用するとキャビティ用のマイクロ波レベ
ルが低下するという欠点があった。However, the conventional rubidium atomic oscillator described above has a structure in which the protrusion 13 for storing the rubidium metal of the rubidium gas cell 2 inserted into the cavity 1 is located at a position close to the transistor heater 6. Therefore, the rubidium metal does not accumulate in the protrusion 13 and diffuses into the rubidium gas cell 2, and there is a disadvantage that the microwave level for the cavity is reduced when used for a long time.
【０００５】したがって、本発明は上記した従来の欠点
に鑑みてなされたものであり、その目的とするところ
は、光マイクロ波共鳴部の長期周波数安定度の向上を図
ったルビジウム原子発振器を提供することにある。Accordingly, the present invention has been made in view of the above-mentioned conventional disadvantages, and an object of the present invention is to provide a rubidium atomic oscillator in which the long-term frequency stability of an optical microwave resonator is improved. It is in.
【０００６】[0006]
【課題を解決するための手段】この目的を達成するため
に、本発明に係るルビジウム原子発振器は、光マイクロ
波共鳴部であるキャビテイと、このキャビテイ内に挿入
されルビジウム金属が封入された円筒状のガスセルと、
このガスセル内のルビジウム金属を気化するヒーターと
を備えるルビジウム原子発振器において、前記キャビテ
イを一体構造とするとともに、このキャビテイの透孔側
の外側部の一部にヒーターを配設し、かつ前記ガスセル
内で液化されたルビジウム金属を溜める突部を前記ヒー
ターから離れた受光素子側において前記キャビテイから
離間させて設けたものである。In order to achieve this object, a rubidium atomic oscillator according to the present invention comprises a cavity which is an optical microwave resonance part, and a cylindrical shape which is inserted in the cavity and in which rubidium metal is sealed. Gas cell and
A rubidium atomic oscillator including a heater for vaporizing rubidium metal in the gas cell, wherein the cavity is formed as an integral structure, and a heater is provided on a part of an outer portion of the cavity on a through-hole side; And a protrusion for storing the rubidium metal liquefied in step (1) is provided on the light receiving element side remote from the heater and separated from the cavity.
【０００７】[0007]
【作用】本発明によれば、ガスセルの突部をヒーターか
ら離れた位置に設けたので、ヒーターの熱の影響を受け
ずにルビジウム金属が突部に溜まり、ヒーターの熱によ
るルビジウム金属の拡散が防止される。According to the present invention, since the protrusion of the gas cell is provided at a position distant from the heater, the rubidium metal accumulates in the protrusion without being affected by the heat of the heater, and the diffusion of the rubidium metal by the heat of the heater is prevented. Is prevented.
【０００８】[0008]
【実施例】以下、本発明の一実施例を図に基づいて説明
する。図１は本発明に係るルビジウム原子発振器の側断
面図である。同図において、従来技術と同一の構成につ
いては同一の符号を付し、詳細な説明は省略する。本発
明の特徴とするところは、ルビジウム金属が溜まる突部
３を有している面板４が光受光素子５側に位置するよう
に配設されている点にある。すなわち、突部３をルビジ
ウム金属を暖めるキャビティ１の透孔１ａ側外側部に設
けたトランジスタヒーター６から離れた位置に配設して
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a rubidium atomic oscillator according to the present invention. In the figure, the same components as those of the related art are denoted by the same reference numerals, and detailed description is omitted. A feature of the present invention is that the face plate 4 having the protrusion 3 in which the rubidium metal is stored is disposed so as to be located on the light receiving element 5 side. That is, the protrusion 3 is disposed at a position apart from the transistor heater 6 provided on the outer side of the cavity 1 for warming the rubidium metal on the side of the through hole 1a.
【０００９】このように、ルビジウム金属を溜める突部
をトランジスタヒーター６から離れた位置に配設するこ
とにより、突部３がトランジスタヒーター６の熱により
暖められるのを防止され、トランジスタヒーター６の熱
の影響を受けずにルビジウム金属が突部３に溜まり、ト
ランジスタヒーター６の熱によるルビジウム金属の拡散
が防止され、長期的に安定した特性が得られ、マイクロ
波レベルの低下を抑えることができ、品質および特性の
向上が図れる。As described above, by disposing the protrusion for storing the rubidium metal at a position away from the transistor heater 6, the protrusion 3 is prevented from being heated by the heat of the transistor heater 6, and the heat of the transistor heater 6 is prevented. The rubidium metal accumulates in the protrusions 3 without being affected by the above, the diffusion of the rubidium metal due to the heat of the transistor heater 6 is prevented, stable characteristics can be obtained for a long time, and a decrease in the microwave level can be suppressed. Quality and characteristics can be improved.
【００１０】[0010]
【発明の効果】以上説明したように本発明によれば、光
マイクロ波共鳴部であるキャビティと、このキャビティ
内に挿入されルビジウム金属が封入された円筒状のガス
セルと、このガスセル内のルビジウム金属を気化するヒ
ーターとを備え、ガスセルに液化されたルビジウム金属
を溜める突部をヒーターから離れた位置に設けたので、
突部がヒーターの熱により暖められるのを防止され、こ
のためヒーターの熱の影響を受けずにルビジウム金属が
突部に溜まり、ヒーターの熱によるルビジウム金属の拡
散が防止され、長期的に安定した特性が得られ、マイク
ロ波レベルの低下を抑えることができ、品質および特性
の向上が図れる。また、突部を受光素子側においてキャ
ビティから離間させて設けたことにより、突部に接触し
て突部を冷却する特別な冷却構造を必要としないので組
立が容易になる。また、キャビティを一体構造とし冷却
用の孔を設けていないことにより、キャビティの構造が
簡素化されるので経済性に優れる。さらに、キャビティ
の外側部にヒーターを配設したことにより、特別なヒー
ターを用いることなく市販のヒーターを用いることが可
能となるので、汎用性が増し経済性に優れる。 As described above, according to the present invention, a cavity which is an optical microwave resonance part, a cylindrical gas cell which is inserted in the cavity and in which rubidium metal is sealed, and a rubidium metal in the gas cell and a heater for vaporizing, since there is provided in a position away the projections for storing rubidium metal which is liquefied in the gas cell from the heater,
The protrusion is prevented from being heated by the heat of the heater, so that the rubidium metal accumulates in the protrusion without being affected by the heat of the heater, and the diffusion of the rubidium metal by the heat of the heater is prevented, and stable for a long time. Characteristics can be obtained, a decrease in microwave level can be suppressed, and quality and characteristics can be improved. Further, calibration in the light-receiving element side projection
Because it is located away from the bitty,
It does not require a special cooling structure to cool the
Standing is easy. In addition, the cavity is integrated and cooled
The hole structure, the cavity structure
It is economical because it is simplified. In addition, the cavity
The heater is located outside of the
It is possible to use a commercially available heater without using a heater
Versatility and economical efficiency.
【図１】本発明に係るルビジウム原子発振器の側断面図
である。FIG. 1 is a side sectional view of a rubidium atomic oscillator according to the present invention.
【図２】従来のルビジウム原子発振器の側断面図であ
る。FIG. 2 is a side sectional view of a conventional rubidium atomic oscillator.
１ キャビティ １ａ 透孔 ２ ガスセル ３ 突部 ４ 面板 ５ 光受光素子 ６ トランジスタヒーター DESCRIPTION OF SYMBOLS 1 Cavity 1a Through-hole 2 Gas cell 3 Projection 4 Face plate 5 Light receiving element 6 Transistor heater
Claims (1)
と、このキャビテイ内に挿入されルビジウム金属が封入
された円筒状のガスセルと、このガスセル内のルビジウ
ム金属を気化するヒーターとを備えるルビジウム原子発
振器において、前記キャビテイを一体構造とするととも
に、このキャビテイの透孔側の外側部の一部にヒーター
を配設し、かつ前記ガスセル内で液化されたルビジウム
金属を溜める突部を前記ヒーターから離れた受光素子側
において前記キャビテイから離間させて設けたことを特
徴とするルビジウム原子発振器。1. A rubidium atomic oscillator comprising a cavity as an optical microwave resonance part, a cylindrical gas cell inserted in the cavity and containing rubidium metal, and a heater for vaporizing the rubidium metal in the gas cell. The cavity has an integral structure, a heater is provided on a part of the outside of the cavity on the through- hole side , and a protrusion that stores rubidium metal liquefied in the gas cell is provided with a light receiving portion separated from the heater. A rubidium atomic oscillator provided on the element side so as to be separated from the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5287270A JP2720772B2 (en) | 1993-10-25 | 1993-10-25 | Rubidium atomic oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5287270A JP2720772B2 (en) | 1993-10-25 | 1993-10-25 | Rubidium atomic oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07122795A JPH07122795A (en) | 1995-05-12 |
| JP2720772B2 true JP2720772B2 (en) | 1998-03-04 |
Family
ID=17715236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5287270A Expired - Lifetime JP2720772B2 (en) | 1993-10-25 | 1993-10-25 | Rubidium atomic oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2720772B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4853322B2 (en) * | 2007-02-22 | 2012-01-11 | セイコーエプソン株式会社 | Lamp exciter and atomic oscillator |
| JP5713039B2 (en) * | 2013-03-04 | 2015-05-07 | セイコーエプソン株式会社 | Atomic oscillator |
| JP6354151B2 (en) * | 2013-12-20 | 2018-07-11 | セイコーエプソン株式会社 | Quantum interference devices, atomic oscillators, electronic equipment, and moving objects |
| JP6511734B2 (en) * | 2014-06-03 | 2019-05-15 | セイコーエプソン株式会社 | Atomic cell, quantum interference device, atomic oscillator, and electronic device |
| JP6476751B2 (en) | 2014-10-29 | 2019-03-06 | セイコーエプソン株式会社 | Atomic cell manufacturing method, atomic cell, quantum interference device, atomic oscillator, and electronic device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4661782A (en) * | 1985-11-25 | 1987-04-28 | Ball Corporation | Integrated microwave cavity resonator and magnetic shield for an atomic frequency standard |
| JPH01158785A (en) * | 1987-12-15 | 1989-06-21 | Fujitsu Ltd | Lamp exciter for rubidium atom oscillator |
| JPH05235759A (en) * | 1992-02-24 | 1993-09-10 | Nec Corp | Rubidium atom oscillator |
-
1993
- 1993-10-25 JP JP5287270A patent/JP2720772B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07122795A (en) | 1995-05-12 |
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