Optical output stabilization device null of integration die semiconductor laser

摘要

PROBLEM TO BE SOLVED: To stabilize optical output, regardless of the change in temperatures at a plurality of semiconductor lasers, in an integrated semiconductor laser array. ;SOLUTION: An integrated semiconductor laser array 11 is an integrated body constituted of semiconductor laser elements 11-1 to 11-n, drive circuit units 16-1 to 16-n for generating a drive current for driving the semiconductor laser elements 11-1 to 11-n, a temperature/voltage conversion means 17 for detecting a temperature at a part of the integrated semiconductor laser array 11 and converting temperature into voltage, a voltage distribution unit 14 for generating a setting voltage equivalent to a drive current on the basis of the voltage signal from the temperature/voltage conversion means 17 to generate desired optical output of the semiconductor laser elements 11-1 to 11-n, with respect to changes in the temperatures, and drive current setting units 15-1 to 15-n for generating a control signal for controlling the drive current on the basis of the setting voltage generated from the voltage distributing unit 14.;COPYRIGHT: (C)2000,JPO