| 摘要 |
PROBLEM TO BE SOLVED: To provide a multibeam type semiconductor laser array in which each of the constituent elements can be visually recognized. SOLUTION: This semiconductor laser array 20 is provided with a first semiconductor laser element 16 and a second semiconductor laser element 18 having the same dimension and the same configuration which are isolated by an electric isolation trench 14 and formed in an array type on a common substrate 12 of a chip. A recognition mark is formed in a surface designated region of each element. The recognition marks (1) and (2), 22, 24 are formed in corner parts in protective films formed as the respective uppermost layers of the elements. As another method, the marks 22, 24 may be formed in corner parts of the forming regions of the laser elements of the common substrate of the chip.
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