Laser diode driving circuit

Details Laser diode driving circuit Laser diode driving circuit

1993-01-05

1994-05-24

Scott, Jr., Leon

Coherent light generators

Particular component circuitry

Optical pumping

372 33, H01S 300

Patent

active

053156064

ABSTRACT:
A laser diode driving circuit is provided with a constant current source, a first series circuit connected to the constant current source and including a first switching device and a laser diode, and a second series circuit connected so as to constitute a differential circuit in cooperation with the first series circuit and including a second switching device and an impedance device. The laser diode device is driven by turning on and off the second switching device. As the impedance device, a device is used which causes an impedance of the first series circuit obtained when the first switching device is ON and an impedance of the second series circuit obtained when the second switching device is ON to be substantially the same.

REFERENCES:
patent: 4243952 (1981-01-01), Patterson
patent: 4488305 (1984-11-01), Claverie et al.
patent: 4924473 (1990-05-01), Burgyan et al.
patent: 5140175 (1992-08-01), Yagi et al.

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