JPS6448240A - Semiconductor laser driving circuit - Google Patents
Semiconductor laser driving circuitInfo
- Publication number
- JPS6448240A JPS6448240A JP62204657A JP20465787A JPS6448240A JP S6448240 A JPS6448240 A JP S6448240A JP 62204657 A JP62204657 A JP 62204657A JP 20465787 A JP20465787 A JP 20465787A JP S6448240 A JPS6448240 A JP S6448240A
- Authority
- JP
- Japan
- Prior art keywords
- power
- current source
- control signal
- semiconductor laser
- current
- 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
Landscapes
- Optical Head (AREA)
- Semiconductor Lasers (AREA)
Abstract
PURPOSE:To stably and highly-speedily set the two kinds of power of bias power and peak power by setting the bias power with holding the control signal of a first current source and setting the peak power with holding the control signal of a second current source. CONSTITUTION:The titled circuit provides a first current source 7 to flow a current for the bias power, a second current source 15 to flow a current for the peak power with overlapping to the current for the bias power and a control means holding the control signal of a first current source 7 and setting the desired source 7 and setting the desired bias power when the power of the semiconductor laser coincides with the bias power desired to successively rise by the control signal of the first current source 7. This circuit also provides a means to successively rise the power of the semiconductor laser with the control signal of the second current source 15 and a means to hold the control signal of the second current source 15 when the power of the semiconductor laser coincides with the desired peak power and to set the desired peak power. Thus, the two kinds of power of the bias power and the peak power can be set stably and highly-speedily.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62204657A JPS6448240A (en) | 1987-08-18 | 1987-08-18 | Semiconductor laser driving circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62204657A JPS6448240A (en) | 1987-08-18 | 1987-08-18 | Semiconductor laser driving circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6448240A true JPS6448240A (en) | 1989-02-22 |
Family
ID=16494129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62204657A Pending JPS6448240A (en) | 1987-08-18 | 1987-08-18 | Semiconductor laser driving circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6448240A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001059777A1 (en) * | 2000-02-09 | 2001-08-16 | Matsushita Electric Industrial Co., Ltd. | Laser control device |
-
1987
- 1987-08-18 JP JP62204657A patent/JPS6448240A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001059777A1 (en) * | 2000-02-09 | 2001-08-16 | Matsushita Electric Industrial Co., Ltd. | Laser control device |
US6683836B2 (en) | 2000-02-09 | 2004-01-27 | Matsushita Electric Industrial Co., Ltd. | Laser control device |
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