JP2615816B2 - Rubidium atomic oscillator - Google Patents
Rubidium atomic oscillatorInfo
- Publication number
- JP2615816B2 JP2615816B2 JP10267788A JP10267788A JP2615816B2 JP 2615816 B2 JP2615816 B2 JP 2615816B2 JP 10267788 A JP10267788 A JP 10267788A JP 10267788 A JP10267788 A JP 10267788A JP 2615816 B2 JP2615816 B2 JP 2615816B2
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- rubidium
- atomic oscillator
- light
- rubidium atomic
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/26—Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Lasers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はルビジウム原子発振器，特に光ポンピング法
を用いたガスセル型ルビジウム原子発振器に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubidium atomic oscillator, and more particularly to a gas cell type rubidium atomic oscillator using an optical pumping method.
従来のルビジウム原子発振器においては，原子共鳴部
（OMU）はルビジウムランプ部，ルビジウムガスセル，
キャビティ，太陽電池から構成されており，ルビジウム
ランプ部からの光はルビジウムガスセルを通過して太陽
電池によって検出される。また，キャビティ内にはルビ
ジウムガスセル，太陽電池が設けられており，マイクロ
波（6.8GHz）にて共振する様になっている。In a conventional rubidium atomic oscillator, the atomic resonance unit (OMU) consists of a rubidium lamp, a rubidium gas cell,
It is composed of a cavity and a solar cell, and light from the rubidium lamp passes through a rubidium gas cell and is detected by the solar cell. A rubidium gas cell and a solar cell are provided in the cavity, and resonate with microwaves (6.8 GHz).
上述した従来のルビジウム原子発振器ではキャビティ
内に太陽電池があるため，キャビティのＱを低下させ，
マイクロ波の損失が多くなる。また，キャビティの共振
周波数を調整する時にキャビティの長さを可変する事が
有効であるが，太陽電池を実装した場合に，キャビティ
の長さを可変させる事は困難であるという問題点があ
る。In the conventional rubidium atomic oscillator described above, since the solar cell is in the cavity, the Q of the cavity is reduced,
Microwave loss increases. Further, it is effective to change the length of the cavity when adjusting the resonance frequency of the cavity, but it is difficult to change the length of the cavity when a solar cell is mounted.
本発明は従来のもののこのような問題点を解決しよう
とするもので，キャビティのＱが高く且つキャビティの
長さを可変できるルビジウム原子発振器を提供するもの
である。SUMMARY OF THE INVENTION The present invention is to solve such a problem of the prior art, and provides a rubidium atomic oscillator having a high cavity Q and a variable cavity length.
本発明によると原子共鳴部のキャビティ内に可動型の
凹面反射部を設け，ルビジウムランプからの光を前記凹
面反射部にて反射させ，この反射光をキャビティ外に設
置した受光素子にて検出するようにしたことを特徴とす
るルビジウム原子発振器が得られる。According to the present invention, a movable concave reflecting portion is provided in a cavity of an atomic resonance portion, light from a rubidium lamp is reflected by the concave reflecting portion, and the reflected light is detected by a light receiving element installed outside the cavity. A rubidium atomic oscillator characterized by doing so is obtained.
次に本発明について図面を参照して説明する。 Next, the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示す断面図である。１は
ルビジウムランプ,2はキャビティ,3はルビジウムガスセ
ル,4は凹面反射板,5は受光素子で，凹面反射板４は可動
型でキャビティ２内で移動でき，受光素子５はキャビテ
ィ２の外部に設けられている。FIG. 1 is a sectional view showing an embodiment of the present invention. 1 is a rubidium lamp, 2 is a cavity, 3 is a rubidium gas cell, 4 is a concave reflector, 5 is a light receiving element, concave reflector 4 is a movable type and can move inside the cavity 2, and the light receiving element 5 is outside the cavity 2. Is provided.
ルビジウムランプ１からの光はキャビティ２の入射孔
からルビジウムガスセル３を通過し凹面反射板４に至
る。反射した光は集束しながらルビジウムガスセル３を
再び通過し，キャビティ外に設置された受光素子５によ
って検出される。Light from the rubidium lamp 1 passes through the entrance hole of the cavity 2, passes through the rubidium gas cell 3, and reaches the concave reflector 4. The reflected light passes through the rubidium gas cell 3 again while being focused, and is detected by the light receiving element 5 installed outside the cavity.
凹面反射板４はキャビティ内にて可動する構造をとっ
ており，キャビティ長を可変する事により，キャビティ
の共振周波数を容易に調整する事ができる。The concave reflector 4 has a structure movable in the cavity, and the resonance frequency of the cavity can be easily adjusted by changing the cavity length.
このように，本実施例では，キャビティ内に凹面反射
板を設置する事により，光検出器をキャビティ外に設置
する事が可能となり，キャビティのＱを向上させる事が
できる。またルビジウムランプからの光はルビジウムガ
スセル内を２回通過する為，信号強度を強める事がで
き，これらによって原子共鳴部（OMU）のS/N比を大幅に
向上させ，原子発振器としての特性を向上させる事がで
きる。As described above, in this embodiment, by installing the concave reflector in the cavity, the photodetector can be installed outside the cavity, and the Q of the cavity can be improved. In addition, since the light from the rubidium lamp passes through the rubidium gas cell twice, the signal intensity can be increased, which greatly improves the S / N ratio of the atomic resonance unit (OMU) and improves the characteristics as an atomic oscillator. Can be improved.
さらに凹面反射板を可動できる構造をとる事によっ
て，キャビティの調整を容易に行う事ができるため，原
子発振器として低価格化できる。Further, by adopting a structure in which the concave reflector can be moved, the cavity can be easily adjusted, so that the price as an atomic oscillator can be reduced.
以上説明したように，本発明は原子共鳴部のキャビテ
ィ内に可動型の凹面反射部を設け，ルビジウムランプか
らの光を前記凹面反射部にて反射させキャビティ外に設
置した受光素子にて検出するようにしたことにより，キ
ャビティのＱを高め，且つキャビティの長さを可変でき
る効果がある。As described above, according to the present invention, a movable concave reflecting portion is provided in a cavity of an atomic resonance portion, and light from a rubidium lamp is reflected by the concave reflecting portion and detected by a light receiving element installed outside the cavity. By doing so, there is an effect that the Q of the cavity can be increased and the length of the cavity can be varied.
第１図は本発明の一実施例を示す断面図である。 １……ルビジウムランプ,2……キャビティ,3……ルビジ
ウムガスセル,4……凹面反射板,5……受光素子。FIG. 1 is a sectional view showing an embodiment of the present invention. 1 ... rubidium lamp, 2 ... cavity, 3 ... rubidium gas cell, 4 ... concave reflector, 5 ... light receiving element.
Claims (1)
反射部を設け，ルビジウムランプからの光を前記凹面反
射部にて反射させ，この反射光をキャビティ外に設置し
た受光素子にて検出するようにしたことを特徴とするル
ビジウム原子発振器。1. A movable concave reflecting portion is provided in a cavity of an atomic resonance portion, light from a rubidium lamp is reflected by the concave reflecting portion, and the reflected light is detected by a light receiving element installed outside the cavity. A rubidium atomic oscillator characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10267788A JP2615816B2 (en) | 1988-04-27 | 1988-04-27 | Rubidium atomic oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10267788A JP2615816B2 (en) | 1988-04-27 | 1988-04-27 | Rubidium atomic oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01274482A JPH01274482A (en) | 1989-11-02 |
| JP2615816B2 true JP2615816B2 (en) | 1997-06-04 |
Family
ID=14333864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10267788A Expired - Lifetime JP2615816B2 (en) | 1988-04-27 | 1988-04-27 | Rubidium atomic oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2615816B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009141048A (en) * | 2007-12-05 | 2009-06-25 | Epson Toyocom Corp | Optical system and atomic oscillator |
| JP5343356B2 (en) * | 2008-01-07 | 2013-11-13 | セイコーエプソン株式会社 | Atomic oscillator |
| JP2009164331A (en) * | 2008-01-07 | 2009-07-23 | Epson Toyocom Corp | Atomic oscillator and oscillation device |
-
1988
- 1988-04-27 JP JP10267788A patent/JP2615816B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01274482A (en) | 1989-11-02 |
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