CONTROL OF LASER SOURCES
A laser circuit has a current source for delivering current to a laser device. A pulse width modulation laser drive current is used, and the amplitude and duty cycle of the laser drive current is set in dependence on an estimated junction temperature. In this way efficiency may be kept high for diff...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A laser circuit has a current source for delivering current to a laser device. A pulse width modulation laser drive current is used, and the amplitude and duty cycle of the laser drive current is set in dependence on an estimated junction temperature. In this way efficiency may be kept high for different operating temperatures and a desired optical output power. |
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