Controlling apparatus for laser diode

Details Controlling apparatus for laser diode Controlling apparatus for laser diode

1989-03-20

1989-10-31

Sikes, William L.

Coherent light generators

Particular component circuitry

Optical pumping

372 29, 372 30, H01S 300

Patent

active

048782254

ABSTRACT:
A controlling apparatus for a laser diode which is used in a laser printer or the like to transmit laser beam light rays. According to the output characteristics of the laser diode, a bias is applied in the current region (from 0 to Ixm) of approximately 0 in radiation output. The control object period (from Ix to Ixm) is divided into many stages to perform the radiation output control so as to effect the high-precision output control without the provision of a more complicated circuit. The central processing unit outputs the control signal into the duty controlling means, so that the output of the laser diode may be automatically held constant in accordance with the predetermined process or the operation arranged in advance.

REFERENCES:
patent: 4237427 (1980-12-01), Holland

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