Hamamatsu-Photonics K.k.

Nobuto Kageyama

Hirofumi Kan

Hirofumi Miyajima

A semiconductor laser baris mounted onto a liquid-cooled heat sink. A molybdenum reinforcement memberis fixed onto the surface opposite to the surface on which the semiconductor laser moduleis mounted. The molybdenum has a linear expansion coefficient less than that of the heat sink. Sub-mounts are preferably made of a Cu&#x2014;W alloy, more preferably of the reinforcement membermolybdenum. In this case, the stresses that are imposed on the heat sinkwhen being expanded or contracted can cancel each other out.

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Hamamatsu, Japan

Nobuto Kageyama