JPS5763879A - Output stabilizing method for semiconductor laser device - Google Patents
Output stabilizing method for semiconductor laser deviceInfo
- Publication number
- JPS5763879A JPS5763879A JP13867880A JP13867880A JPS5763879A JP S5763879 A JPS5763879 A JP S5763879A JP 13867880 A JP13867880 A JP 13867880A JP 13867880 A JP13867880 A JP 13867880A JP S5763879 A JPS5763879 A JP S5763879A
- Authority
- JP
- Japan
- Prior art keywords
- output
- semiconductor laser
- laser device
- comparator
- stabilizing method
- 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
- H01S5/06—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
- H01S5/06837—Stabilising otherwise than by an applied electric field or current, e.g. by controlling the temperature
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 output of a semiconductor laser device, by controlling an electron refrigerating element and laser element driving curent device in accordance with output of a heat-sensitive element arranged in proximity of a semiconductor laser device. CONSTITUTION:A semiconductor laser element 12 is driven circuit 11, temperature in the neighborhood of this element is detected by a heat-sensitive element 13, an output on one side is put into a comparator 15 through an amplifier 14, an electron refrigerating element 18 of Beltier effect element, etc. is controlled and driven by this output through a drive control circuit 16, an output on the other side is put into a comparator 19 and the laser driving circuit 11 is controlled by this output. It is possible, by doing so, to reduce in number of elements constituting an output stabilizing device and improve safety of temperature control.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13867880A JPS5763879A (en) | 1980-10-06 | 1980-10-06 | Output stabilizing method for semiconductor laser device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13867880A JPS5763879A (en) | 1980-10-06 | 1980-10-06 | Output stabilizing method for semiconductor laser device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5763879A true JPS5763879A (en) | 1982-04-17 |
Family
ID=15227542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13867880A Pending JPS5763879A (en) | 1980-10-06 | 1980-10-06 | Output stabilizing method for semiconductor laser device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5763879A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60130875A (en) * | 1983-12-19 | 1985-07-12 | Seiko Epson Corp | Automatic output control device of laser diode |
US4713672A (en) * | 1985-07-24 | 1987-12-15 | Mita Industrial Co., Ltd. | Laser beam printer |
US4734914A (en) * | 1985-03-15 | 1988-03-29 | Olympus Optical Co., Ltd. | Stabilized laser apparatus |
JPH0215762U (en) * | 1988-07-18 | 1990-01-31 | ||
JPH02244685A (en) * | 1989-03-15 | 1990-09-28 | Nec Corp | Ld module protecting method |
WO2000013346A1 (en) * | 1998-08-28 | 2000-03-09 | Calibre, Inc. | Method and system for preventing burn-out of infrared transmitter diodes |
-
1980
- 1980-10-06 JP JP13867880A patent/JPS5763879A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60130875A (en) * | 1983-12-19 | 1985-07-12 | Seiko Epson Corp | Automatic output control device of laser diode |
US4734914A (en) * | 1985-03-15 | 1988-03-29 | Olympus Optical Co., Ltd. | Stabilized laser apparatus |
US4713672A (en) * | 1985-07-24 | 1987-12-15 | Mita Industrial Co., Ltd. | Laser beam printer |
JPH0215762U (en) * | 1988-07-18 | 1990-01-31 | ||
JPH02244685A (en) * | 1989-03-15 | 1990-09-28 | Nec Corp | Ld module protecting method |
WO2000013346A1 (en) * | 1998-08-28 | 2000-03-09 | Calibre, Inc. | Method and system for preventing burn-out of infrared transmitter diodes |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5441415A (en) | Method of and device for controlling motor driving unit | |
JPS5339136A (en) | Fixing temperature controlling method | |
JPS5763879A (en) | Output stabilizing method for semiconductor laser device | |
JPS5370689A (en) | Semiconductor laser device | |
JPS57160854A (en) | Catenary controller | |
JPS5333346A (en) | Controlling power supply circuit | |
JPS5776884A (en) | Driving circuit of semiconductor light emitter | |
JPS6448472A (en) | Light-emitting device driving circuit | |
JPS5232295A (en) | Laser excitation power supply | |
JPS56112788A (en) | Semiconductor laser | |
JPS5799791A (en) | Power controller of semiconductor laser | |
JPS55154789A (en) | Driving circuit for semiconductor laser | |
JPS53149615A (en) | Driving device of step motor | |
JPS5244402A (en) | Method and device for controlling pump system | |
JPS5357844A (en) | Drive device for heat-sensitive head | |
JPS5310221A (en) | Protective device for output circuit | |
JPS5340179A (en) | Program controlling device | |
JPS51114621A (en) | Pulse motor drive controlling device | |
JPS5337327A (en) | Protective device for output circuit | |
JPS5691685A (en) | Motor position control system | |
JPS5472444A (en) | Control of constant-voltage circuit | |
JPS57120127A (en) | Temperature controller | |
JPS5780135A (en) | Fan-speed controlling circuit for air conditioner | |
JPS55115072A (en) | Temperature control method | |
JPS5233056A (en) | Source voltage regulator |