High efficiency constant current laser driver

Details High efficiency constant current laser driver High efficiency constant current laser driver

1996-08-26

1998-05-05

Healy, Brian

Coherent light generators

Particular component circuitry

Optical pumping

372109, 372 43, 606 10, 606 11, H01S 300, A61B 1736

Patent

active

057486573

ABSTRACT:
A constant current laser driver circuit that will drive a laser diode in a constant current mode from a 6 to 12 volt battery supply. The laser driver consists of two main sections. The first section converts the 12 volt input to a 2 volt output using ultra-low resistance power mosfets and an inductor. The current sensing amplifier senses the current flowing through the laser and sends a feedback signal to the switching section, which causes it to adjust the output voltage to keep the laser driving current constant.

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