| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser beam emitting apparatus and a laser driving method with which output characteristics can be maintained constant in spite of a temperature change. SOLUTION: A laser beam emitting apparatus includes a laser element 1 emitting laser beams in a plurality of modes, a driving device 4 for supplying a driving current I superimposing a bias current I-bias and a modulated current I-mod to the laser element 1, and a photodetector 3 for photodetecting an outer portion of laser beams emitted from the laser element 1. The driving device 4 controls the modulated current I-mod based on the quantity of light detected by the photodetector 3. COPYRIGHT: (C)2007,JPO&INPIT
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