JPS577987A - Controlling device for laser beam frequency - Google Patents
Controlling device for laser beam frequencyInfo
- Publication number
- JPS577987A JPS577987A JP8226080A JP8226080A JPS577987A JP S577987 A JPS577987 A JP S577987A JP 8226080 A JP8226080 A JP 8226080A JP 8226080 A JP8226080 A JP 8226080A JP S577987 A JPS577987 A JP S577987A
- Authority
- JP
- Japan
- Prior art keywords
- output
- intermediary
- induced
- laser beam
- controlling device
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/068—Stabilisation of laser output parameters
- H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
- H01S5/0687—Stabilising the frequency of the laser
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
PURPOSE:To perform the automatic frequency control (AFC) of laser beam precisely and quickly by a method wherein a heterodyne detection is performed on the controlling laser beams, one of a plurality of spectrums is used as an objective substance and said spectrum is passed through the circuit containing a discriminator. CONSTITUTION:The heterodyne detection is performed on the control laser beams and an intermediate frequency signal is induced in filters FL1-FL3 from the input terminal 5 on a controlling device 10 through the intermediary of a distributor 7. The output of the filters FL1 and FL2 is rectified by detectors D1 and D2, and are compared by a comparator 11. On the other hand, the output of the filter FL3 is induced in a detector D3 and a discriminator 15 through the intermediary of distributor 14. The output of the detector D3 is compared with a reference voltage VS by a comparator 12. These outputs are induced in an output terminal 8 through the intermediary of electronic switches SW1 and SW2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8226080A JPS5840356B2 (en) | 1980-06-17 | 1980-06-17 | Laser light frequency control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8226080A JPS5840356B2 (en) | 1980-06-17 | 1980-06-17 | Laser light frequency control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS577987A true JPS577987A (en) | 1982-01-16 |
JPS5840356B2 JPS5840356B2 (en) | 1983-09-05 |
Family
ID=13769481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8226080A Expired JPS5840356B2 (en) | 1980-06-17 | 1980-06-17 | Laser light frequency control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5840356B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6023180A (en) * | 1983-07-19 | 1985-02-05 | 住友ベークライト株式会社 | Package and manufacture thereof |
US5317582A (en) * | 1993-04-12 | 1994-05-31 | Hughes Aircraft Company | System for detecting modulated laser signals |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62297064A (en) * | 1986-06-16 | 1987-12-24 | Rodeele Nitta Kk | Lamination body for holding wafer such as semiconductor |
-
1980
- 1980-06-17 JP JP8226080A patent/JPS5840356B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6023180A (en) * | 1983-07-19 | 1985-02-05 | 住友ベークライト株式会社 | Package and manufacture thereof |
US5317582A (en) * | 1993-04-12 | 1994-05-31 | Hughes Aircraft Company | System for detecting modulated laser signals |
Also Published As
Publication number | Publication date |
---|---|
JPS5840356B2 (en) | 1983-09-05 |
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