JPS5713790A - Output light intensity controller for laser array - Google Patents
Output light intensity controller for laser arrayInfo
- Publication number
- JPS5713790A JPS5713790A JP8870580A JP8870580A JPS5713790A JP S5713790 A JPS5713790 A JP S5713790A JP 8870580 A JP8870580 A JP 8870580A JP 8870580 A JP8870580 A JP 8870580A JP S5713790 A JPS5713790 A JP S5713790A
- Authority
- JP
- Japan
- Prior art keywords
- laser
- laser array
- light intensity
- output light
- intensity controller
- 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
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
-
- 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
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
PURPOSE:To stabilize the power of a laser array by monitoring the laser power of any one of a plurality of laser light emission sources and controlling the other lasers with the output of the monitoring means. CONSTITUTION:A multiple laser diode chip 1 has laser diodes LD1, LD2,..., LDn. The laser power light of the diode LD1 is incident to an optical fiber 2, and is emitted to a photodiode 3. The output of the photodiode 3 is applied through an operational amplifier 4 and a differential amplifier 5 to laser driver stages 6, 7....
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8870580A JPS5713790A (en) | 1980-06-30 | 1980-06-30 | Output light intensity controller for laser array |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8870580A JPS5713790A (en) | 1980-06-30 | 1980-06-30 | Output light intensity controller for laser array |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5713790A true JPS5713790A (en) | 1982-01-23 |
Family
ID=13950292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8870580A Pending JPS5713790A (en) | 1980-06-30 | 1980-06-30 | Output light intensity controller for laser array |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5713790A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4821065A (en) * | 1986-01-10 | 1989-04-11 | Canon Kabushiki Kaisha | Recording apparatus having controllable recording beam states |
US4868675A (en) * | 1987-08-25 | 1989-09-19 | Oce-Nederland B.V. | Control circuit for a laser printer |
JPH0336778A (en) * | 1989-07-04 | 1991-02-18 | Fujitsu Ltd | Controller for light emitting element array driving circuit |
EP0525684A2 (en) * | 1991-07-24 | 1993-02-03 | Fujitsu Limited | Integrated semiconductor laser array apparatus |
US5412675A (en) * | 1991-12-26 | 1995-05-02 | Fujitsu Limited | Semiconductor optical source capable of compensating for temperature-induced variation of laser oscillation threshold |
US5767704A (en) * | 1996-08-30 | 1998-06-16 | Larson; Francis Willard | High frequency analog switch for use with a laser diode |
US7529282B2 (en) | 2001-03-05 | 2009-05-05 | Fuji Xerox Co., Ltd. | Apparatus for driving light emitting element and system for driving light emitting element |
US8976827B2 (en) | 2012-10-04 | 2015-03-10 | Sony Corporation | Driving device and light-emitting unit |
JP2015201587A (en) * | 2014-04-10 | 2015-11-12 | 株式会社島津製作所 | semiconductor laser drive circuit |
JP2017188702A (en) * | 2017-07-18 | 2017-10-12 | 株式会社島津製作所 | Semiconductor laser drive circuit |
-
1980
- 1980-06-30 JP JP8870580A patent/JPS5713790A/en active Pending
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4821065A (en) * | 1986-01-10 | 1989-04-11 | Canon Kabushiki Kaisha | Recording apparatus having controllable recording beam states |
US4868675A (en) * | 1987-08-25 | 1989-09-19 | Oce-Nederland B.V. | Control circuit for a laser printer |
EP0476719A2 (en) * | 1987-08-25 | 1992-03-25 | Océ-Nederland B.V. | A control circuit for a laser printer |
JPH0336778A (en) * | 1989-07-04 | 1991-02-18 | Fujitsu Ltd | Controller for light emitting element array driving circuit |
EP0525684A2 (en) * | 1991-07-24 | 1993-02-03 | Fujitsu Limited | Integrated semiconductor laser array apparatus |
US5337323A (en) * | 1991-07-24 | 1994-08-09 | Fujitsu Limited | Integrated semiconductor laser array apparatus |
US5412675A (en) * | 1991-12-26 | 1995-05-02 | Fujitsu Limited | Semiconductor optical source capable of compensating for temperature-induced variation of laser oscillation threshold |
US5767704A (en) * | 1996-08-30 | 1998-06-16 | Larson; Francis Willard | High frequency analog switch for use with a laser diode |
US7529282B2 (en) | 2001-03-05 | 2009-05-05 | Fuji Xerox Co., Ltd. | Apparatus for driving light emitting element and system for driving light emitting element |
US8976827B2 (en) | 2012-10-04 | 2015-03-10 | Sony Corporation | Driving device and light-emitting unit |
JP2015201587A (en) * | 2014-04-10 | 2015-11-12 | 株式会社島津製作所 | semiconductor laser drive circuit |
JP2017188702A (en) * | 2017-07-18 | 2017-10-12 | 株式会社島津製作所 | Semiconductor laser drive circuit |
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