JPH0390533U - - Google Patents
Info
- Publication number
- JPH0390533U JPH0390533U JP15182789U JP15182789U JPH0390533U JP H0390533 U JPH0390533 U JP H0390533U JP 15182789 U JP15182789 U JP 15182789U JP 15182789 U JP15182789 U JP 15182789U JP H0390533 U JPH0390533 U JP H0390533U
- Authority
- JP
- Japan
- Prior art keywords
- standard
- frequency
- absorption cell
- light
- electromagnetic waves
- 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 5
- 239000000126 substance Substances 0.000 claims 2
- 238000000862 absorption spectrum Methods 0.000 claims 1
- 230000003595 spectral effect Effects 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor 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図は第１図装置の動
作を示すタイムチヤート、第３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４
図は周波数標準器の従来技術を示す構成ブロツク
図、第５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のロツクインアン
プ、３５，３９……ＰＩＤ制御部、３６……加算
器、３８……第２のロツクインアンプ、４０……
水晶発振器、４１……位相変調器、４３……周波
数合成器、４４……空胴共振器、４５……光スイ
ツチ、４６……スイツチ、４７……発振器。
Fig. 1 is a configuration block diagram showing one embodiment of the frequency standard according to the present invention, Fig. 2 is a time chart showing the operation of the device shown in Fig. 1, and Fig. 3 is the energy level of Rb 87 in the case of electromagnetic wave absorption. Diagram showing the position, No. 4
The figure is a block diagram showing a conventional frequency standard, and FIG. 5 is a diagram showing the energy level of Rb 87 in the case of stimulated emission. 30... Semiconductor laser, 31... Absorption cell, 3
2... Photodetector, 34... First lock-in amplifier, 35, 39... PID control section, 36... Adder, 38... Second lock-in amplifier, 40...
Crystal oscillator, 41... Phase modulator, 43... Frequency synthesizer, 44... Cavity resonator, 45... Optical switch, 46... Switch, 47... Oscillator.
Claims (1)
する標準物質を封入した吸収セルに照射し、また
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、光と電磁波を前記吸収セ
ルに交互に照射するように構成したことを特徴と
する周波数標準器。 Light of a predetermined frequency is irradiated onto an absorption cell containing a standard substance having a specific absorption spectrum, and this absorption cell is irradiated with electromagnetic waves to produce an ultrafine spectral transition of the standard substance. 1. A frequency standard that generates a standard frequency based on the frequency standard, characterized in that the frequency standard is configured to alternately irradiate the absorption cell with light and electromagnetic waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15182789U JPH0390533U (en) | 1989-12-28 | 1989-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15182789U JPH0390533U (en) | 1989-12-28 | 1989-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0390533U true JPH0390533U (en) | 1991-09-13 |
Family
ID=31698114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15182789U Pending JPH0390533U (en) | 1989-12-28 | 1989-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0390533U (en) |
-
1989
- 1989-12-28 JP JP15182789U patent/JPH0390533U/ja active Pending
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