JPS5624991A - Driving circuit for pulse laser diode - Google Patents
Driving circuit for pulse laser diodeInfo
- Publication number
- JPS5624991A JPS5624991A JP10030179A JP10030179A JPS5624991A JP S5624991 A JPS5624991 A JP S5624991A JP 10030179 A JP10030179 A JP 10030179A JP 10030179 A JP10030179 A JP 10030179A JP S5624991 A JPS5624991 A JP S5624991A
- Authority
- JP
- Japan
- Prior art keywords
- emitter
- laser diode
- base
- transistor
- pulse laser
- 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
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
PURPOSE:To contrive the increase in the applied voltage of th pulse laser diode driving circuit and the improvement in the efficiency thereof by connecting the base and the emitter of a switching transistor by an inductor. CONSTITUTION:A capacitor 2 is charged by a voltage VH through a resistor 7 and a diode 5, and stored charge of the capacitor 2 is supplied to the laser diode 3 through the switching operation of the transistor 1 formed with the inductor 10 between the base and the emitter thereof. In this configuration the base and the emitter of the transistor is shortcircuited in DC and is high impedance in AC. Accordingly, in case that there is no trigger pulse 9 thereat, it is raised to collector maximum allowable voltage, and when the trigger pulse is inputted through the capacitor 6, the leakage from the base to the emitter is reduced to obtain sufficient base current. Therefore, the impedance between the collector and the emitter of the transistor is lowered at the time of ON so as to lower the impedance of the discharging loop. Thus, there can drive a pulse laser diode stably and efficiently.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10030179A JPS5624991A (en) | 1979-08-08 | 1979-08-08 | Driving circuit for pulse laser diode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10030179A JPS5624991A (en) | 1979-08-08 | 1979-08-08 | Driving circuit for pulse laser diode |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5624991A true JPS5624991A (en) | 1981-03-10 |
Family
ID=14270340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10030179A Pending JPS5624991A (en) | 1979-08-08 | 1979-08-08 | Driving circuit for pulse laser diode |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5624991A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4819241A (en) * | 1985-08-16 | 1989-04-04 | Kabushiki Kaisha Toshiba | Laser diode driving circuit |
US4856011A (en) * | 1985-01-30 | 1989-08-08 | Ricoh Company, Ltd. | Semiconductor laser control circuit |
WO2002017451A1 (en) * | 2000-08-22 | 2002-02-28 | Osram Opto Semiconductors Gmbh | Laser module comprising a drive circuit |
EP1289081A1 (en) * | 2001-09-03 | 2003-03-05 | Agilent Technologies, Inc. (a Delaware corporation) | Laser driver circuit and method of driving a laser therewith |
WO2009132631A1 (en) * | 2008-04-30 | 2009-11-05 | Jenoptik Laser, Optik, Systeme Gmbh | Laser and method for producing pulsed laser radiation |
JP2016152336A (en) * | 2015-02-18 | 2016-08-22 | 株式会社豊田中央研究所 | Laser diode driving circuit and laser radar device |
JPWO2021210217A1 (en) * | 2020-04-15 | 2021-10-21 |
-
1979
- 1979-08-08 JP JP10030179A patent/JPS5624991A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4856011A (en) * | 1985-01-30 | 1989-08-08 | Ricoh Company, Ltd. | Semiconductor laser control circuit |
US4819241A (en) * | 1985-08-16 | 1989-04-04 | Kabushiki Kaisha Toshiba | Laser diode driving circuit |
WO2002017451A1 (en) * | 2000-08-22 | 2002-02-28 | Osram Opto Semiconductors Gmbh | Laser module comprising a drive circuit |
EP1289081A1 (en) * | 2001-09-03 | 2003-03-05 | Agilent Technologies, Inc. (a Delaware corporation) | Laser driver circuit and method of driving a laser therewith |
US6778571B2 (en) | 2001-09-03 | 2004-08-17 | Agilent Technologies, Inc. | Laser driver circuit |
WO2009132631A1 (en) * | 2008-04-30 | 2009-11-05 | Jenoptik Laser, Optik, Systeme Gmbh | Laser and method for producing pulsed laser radiation |
JP2016152336A (en) * | 2015-02-18 | 2016-08-22 | 株式会社豊田中央研究所 | Laser diode driving circuit and laser radar device |
JPWO2021210217A1 (en) * | 2020-04-15 | 2021-10-21 |
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