Patent ID: 9054481
Filing Date: 2015-06-09
Classification: H01L,H01S

Abstract:
1. A semiconductor laser device comprising: a plurality of members constituting a first group and a second group in each of which a semiconductor laser element is incorporated; a cooling jacket having, on a surface of the cooling jacket, a first region in which a member of the first group is disposed and a second region in which a member of the second group is disposed; and a cooling medium channel which is disposed inside the cooling jacket closer to the first region than to the second region, wherein the cooling medium channel reduces a temperature of at least one first semiconductor laser element of the first group, thereby changing an emission wavelength of the at least one first semiconductor laser element with respect to an emission wavelength of at least one second semiconductor laser element of the second group due to the cooling medium channel being closer to the first region than the second region.