JPH02122333U - - Google Patents
Info
- Publication number
- JPH02122333U JPH02122333U JP3225389U JP3225389U JPH02122333U JP H02122333 U JPH02122333 U JP H02122333U JP 3225389 U JP3225389 U JP 3225389U JP 3225389 U JP3225389 U JP 3225389U JP H02122333 U JPH02122333 U JP H02122333U
- Authority
- JP
- Japan
- Prior art keywords
- output
- laser beam
- photodetector
- optical means
- measured
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 7
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 4
- 238000010408 sweeping Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Spectrometry And Color Measurement (AREA)
Description
第１図は本考案に係るレーザ周波数計の一実施
例を示す構成ブロツク図、第２図および第３図は
第１図装置の動作を示すタイムチヤート、第４図
およひ第５図は同動作説明図、第６図は本考案に
係るレーザ周波数計の他の実施例を示す構成ブロ
ツク図、第７図および第８図は従来のレーザ周波
数計を示す原理図である。
１……参照レーザ、２……第１の光学手段、５
……フアブリ・ペロー・エタロン、６……第２の
光学手段、７……第１の光検出器、８……第２の
光検出器、９……第１のメモリ回路、１０……第
２のメモリ回路、１１……ＤＡ変換器、１２……
発振器、１３……周波数演算回路、１４……カウ
ンタ、５３……掃引手段。
Fig. 1 is a block diagram showing an embodiment of the laser frequency meter according to the present invention, Figs. 2 and 3 are time charts showing the operation of the device shown in Fig. 1, and Figs. 4 and 5 are FIG. 6 is a block diagram showing another embodiment of the laser frequency meter according to the present invention, and FIGS. 7 and 8 are principle diagrams showing the conventional laser frequency meter. 1... Reference laser, 2... First optical means, 5
...Fabri-Perot etalon, 6...second optical means, 7...first photodetector, 8...second photodetector, 9...first memory circuit, 10...th 2 memory circuit, 11...DA converter, 12...
Oscillator, 13... Frequency calculation circuit, 14... Counter, 53... Sweeping means.
Claims (1)
ーザの出力光と被測定レーザ光とを合波する第１
の光学手段と、この第１の光学手段の出力光を入
射するフアブリ・ペロー・エタロンと、このフア
ブリ・ペロー・エタロンを透過する光を前記被測
定レーザ光と前記参照レーザ光の２つに分離する
第２の光学手段と、この第２の光学手段から出力
される前記被測定レーザ光を検出する第１の光検
出器と、前記第２の光学手段から出力される前記
参照レーザ光を検出する第２の光検出器と、前記
第１の光検出器の出力信号を記憶する第１のメモ
リ回路と、前記第２の光検出器の出力信号を記憶
する第２のメモリ回路と、前記フアブリ・ペロー
・エタロンのミラー間隔を微小変化させる掃引手
段と、前記第１および第２のメモリ回路を駆動す
る発振器と、この発振器の出力パルス数を積算し
その出力により前記掃引手段を駆動する積算手段
と、第１のメモリ回路出力および第２のメモリ回
路出力に基づいて被測定レーザ光の周波数を演算
する周波数演算回路とを備えたことを特徴とする
レーザ周波数計。 A reference laser whose oscillation frequency is known, and a first beam that combines the output light of this reference laser and the laser beam to be measured.
an optical means, a Fabry-Perot etalon into which the output light of the first optical means is incident, and a light that passes through the Fabry-Perot etalon is separated into the laser beam to be measured and the reference laser beam. a second optical means for detecting the measured laser beam output from the second optical means; a first photodetector for detecting the reference laser beam output from the second optical means; a second photodetector that stores the output signal of the first photodetector; a second memory circuit that stores the output signal of the second photodetector; a sweeping means for minutely changing the mirror spacing of the Fabry-Perot etalon; an oscillator for driving the first and second memory circuits; and an integrating means for integrating the number of output pulses of the oscillator and driving the sweeping means with the output. 1. A laser frequency meter comprising: means for calculating a frequency of a laser beam to be measured based on a first memory circuit output and a second memory circuit output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3225389U JPH0714836Y2 (en) | 1989-03-22 | 1989-03-22 | Laser frequency meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3225389U JPH0714836Y2 (en) | 1989-03-22 | 1989-03-22 | Laser frequency meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02122333U true JPH02122333U (en) | 1990-10-05 |
| JPH0714836Y2 JPH0714836Y2 (en) | 1995-04-10 |
Family
ID=31258632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3225389U Expired - Lifetime JPH0714836Y2 (en) | 1989-03-22 | 1989-03-22 | Laser frequency meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0714836Y2 (en) |
-
1989
- 1989-03-22 JP JP3225389U patent/JPH0714836Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0714836Y2 (en) | 1995-04-10 |
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