| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems that can-and coaxial-type semiconductor laser modules are not temperature controlled, and a planar substrate Peltier cooler is not adaptable applied to the laser modules. SOLUTION: A Peltier cooler is constituted by alternately connecting p-type Peltier elements 11 and n-type Peltier elements 12 in series through electrodes 13 between two substrates 14 and 15 having cylindrical curved surfaces. Since the Peltier cooler using the substrates 14 and 15 having cylindrical curved surfaces can be realized, a cylindrical semiconductor laser module having a capacity equal to that of a semiconductor laser module using the Peltier cooler of the planar substrates can be obtained by controlling the temperature of the module by applying the Peltier cooler to the module. COPYRIGHT: (C)2004,JPO
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