| 摘要 |
PROBLEM TO BE SOLVED: To provide a three-wavelength semiconductor laser array where three kinds of semiconductor laser elements, i.e. a red laser element, an infrared laser element and a blue laser element are integrated on one substrate, by relaxing mismatch of a blue laser and a substrate material. SOLUTION: In the three wavelength semiconductor laser array, a red laser element, an infrared laser element and a blue laser element are monolithically integrated on a semiconductor substrate. A buffer layer, including at least one kind of compound semiconductor selected from among a group consisting of a I-III-VI compound semiconductor, a II-III-VI compound semiconductor and a II-III-V compound semiconductor, is provided in between the semiconductor substrate and the blue laser element. COPYRIGHT: (C)2005,JPO&NCIPI
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