Scanner droop and cross talk correction

Details Scanner droop and cross talk correction Scanner droop and cross talk correction

1994-07-05

1995-04-04

Bovernick, Rodney B.

Coherent light generators

Particular operating compensation means

372 38, H01S 300

Patent

active

054043670

ABSTRACT:
A laser diode assembly is disclosed which utilizes a feedback system which substantially reduces the dependency of the optical output power of the laser diode on laser junction temperature which is dependent on the pixel pattern. The feedback system of this invention utilizes a low pass filter to detect the low frequencies of the train of pixel information which cause a certain droop. The low pass filter generates a signal based on the detected frequencies which after being scaled will be used as a feedback signal. The feedback signal will be applied to the driver of the laser diode to adjust the driving current of the laser diode for the detected patterns to substantially reduce the droop and the cross talk.

REFERENCES:
patent: 5309269 (1994-05-01), Shibao
patent: 5335239 (1994-08-01), Herczeg et al.

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