JPH0286232U - - Google Patents
Info
- Publication number
- JPH0286232U JPH0286232U JP16459288U JP16459288U JPH0286232U JP H0286232 U JPH0286232 U JP H0286232U JP 16459288 U JP16459288 U JP 16459288U JP 16459288 U JP16459288 U JP 16459288U JP H0286232 U JPH0286232 U JP H0286232U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- output
- standard
- absorption cell
- light
- 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.)
- Pending
Links
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000000862 absorption spectrum Methods 0.000 claims 2
- 230000003595 spectral effect Effects 0.000 claims 2
- 230000007704 transition Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000012925 reference material Substances 0.000 claims 1
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 239000010421 standard material Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
第１図は本考案に係る周波数標準器の一実施例
を示す構成ブロツク図、第２図はその要部構成斜
視図、第３図はループループギヤツプ共振器周辺
の斜視図および断面図、第４図は電磁波吸収の場
合のＲｂ８７のエネルギー準位を示す図、第５図
は周波数標準器の先行技術を示す構成ブロツク図
、第６図は誘導放出の場合のＲｂ８７のエネルギ
ー準位を示す図である。
３０……半導体レーザ、３１……吸収セル、３
２……光検出器、３４……第１の増幅手段、３５
……第１の制御手段、３６……加算器、３７，４
２……発振器、３８……第２の増幅手段、３９…
…第２の制御手段、４０……水晶発振器、４１…
…位相変調器、４３……周波数合成器、４５……
ループギヤツプ共振器、４６……マルチモードフ
アイバ。
Fig. 1 is a block diagram showing an embodiment of the frequency standard according to the present invention, Fig. 2 is a perspective view of the main part thereof, and Fig. 3 is a perspective view and a sectional view of the vicinity of the loop-loop gap resonator. , Fig. 4 is a diagram showing the energy level of Rb 87 in the case of electromagnetic wave absorption, Fig. 5 is a block diagram showing the prior art of a frequency standard, and Fig. 6 is a diagram showing the energy level of Rb 87 in the case of stimulated emission. FIG. 30... Semiconductor laser, 31... Absorption cell, 3
2...Photodetector, 34...First amplification means, 35
...first control means, 36...adder, 37,4
2... Oscillator, 38... Second amplification means, 39...
...Second control means, 40...Crystal oscillator, 41...
...Phase modulator, 43...Frequency synthesizer, 45...
Loop gap resonator, 46...multimode fiber.
Claims (1)
する標準物質を封入した吸収セルに照射するとと
もに、この吸収セルに電磁波を照射して前記標準
物質の超微細スペクトル遷移を生じさせ、この超
微細スペクトル遷移に基づいて標準周波数を発生
させる周波数標準器において、 半導体レーザと、この半導体レーザの出力光を
第１の周波数で変調する第１の変調手段と、前記
半導体レーザの出力光が入射されその内部に特定
の吸収スペクトルを有する標準物質を封入した吸
収セルと、この吸収セルの透過光を検出する光検
出器と、この光検出器の出力を第１の周波数に関
連する周波数で同期検波する第１の増幅手段と、
この第１の増幅手段の出力に基づいて前記半導体
レーザの出力光の周波数を安定化する第１の制御
手段と、発振器と、この発振器の出力を第２の周
波数で変調する第２の変調手段と、前記光検出器
の出力を第２の周波数に関連する周波数で同期検
波する第２の増幅手段と、この第２の増幅手段の
出力に基づいて前記発振器の出力周波数を制御す
る第２の制御手段と、前記第２の変調手段の出力
周波数を逓倍した信号に基づいて前記吸収セルに
電磁波を照射するループギヤツプ共振器とを備え
たことを特徴とする周波数標準器。[Claims for Utility Model Registration] Light of a predetermined frequency is irradiated onto an absorption cell containing a standard material having a specific absorption spectrum, and the absorption cell is irradiated with electromagnetic waves to detect ultrafine spectral transitions of the reference material. A frequency standard device that generates a standard frequency based on this ultra-fine spectral transition includes: a semiconductor laser; a first modulating means for modulating the output light of the semiconductor laser at a first frequency; an absorption cell into which the output light is incident and a standard substance having a specific absorption spectrum is sealed therein; a photodetector that detects the transmitted light of the absorption cell; and an output of the photodetector that is related to a first frequency. a first amplifying means that performs synchronous detection at a frequency of
a first control means for stabilizing the frequency of the output light of the semiconductor laser based on the output of the first amplification means; an oscillator; and a second modulation means for modulating the output of the oscillator at a second frequency. a second amplifying means for synchronously detecting the output of the photodetector at a frequency related to the second frequency; and a second amplifying means for controlling the output frequency of the oscillator based on the output of the second amplifying means. A frequency standard comprising: a control means; and a loop-gap resonator that irradiates the absorption cell with electromagnetic waves based on a signal obtained by multiplying the output frequency of the second modulation means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16459288U JPH0286232U (en) | 1988-12-20 | 1988-12-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16459288U JPH0286232U (en) | 1988-12-20 | 1988-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0286232U true JPH0286232U (en) | 1990-07-09 |
Family
ID=31450337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16459288U Pending JPH0286232U (en) | 1988-12-20 | 1988-12-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0286232U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015023572A (en) * | 2013-07-22 | 2015-02-02 | ハネウェル・インターナショナル・インコーポレーテッド | System and method for cold atom frequency standard |
| JP2017512376A (en) * | 2014-02-06 | 2017-05-18 | オロリア・スウィッツァーランド・ソシエテ・アノニム | Equipment for atomic clocks |
-
1988
- 1988-12-20 JP JP16459288U patent/JPH0286232U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015023572A (en) * | 2013-07-22 | 2015-02-02 | ハネウェル・インターナショナル・インコーポレーテッド | System and method for cold atom frequency standard |
| JP2017512376A (en) * | 2014-02-06 | 2017-05-18 | オロリア・スウィッツァーランド・ソシエテ・アノニム | Equipment for atomic clocks |
| US10191452B2 (en) | 2014-02-06 | 2019-01-29 | Orolia Switzerland Sa | Device for an atomic clock |
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