SEMICONDUCTOR LASER DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a semiconductor laser device which can favorably reduce noise input to a semiconductor laser chip.SOLUTION: A semiconductor laser device 1 comprises: a chip carrier 2; a first metalization which is provided on the chip carrier 2 and has a chip mounting region 3a and first and second regions 3b, 3c extending from the chip mounting region 3a; a second metalization which is provided on the chip carrier 2 and isolated from the first metalization and to which a direct current is input; a solder material pattern 15 continuously provided on the chip mounting region 3a and the second region 3c in the first metalization; a semiconductor laser chip 12 which is mounted on the chip mounting region 3a via the solder material pattern 15 and connected to the second metalization; and a capacitor 14 in which one electrode is connected to the first region 3b and the other electrode is connected to the second metalization.SELECTED DRAWING: Figure 1