MULTIBEAM SEMICONDUCTOR LASER AND ITS MANUFACTURING METHOD, MULTIBEAM SEMICONDUCTOR LASER ARRAY, PLATE MAKING APPARATUS FOR PRINTING, AND IMAGE RECORDING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a multibeam semiconductor laser which can be increased in the rated output by suppressing the heat conduction from a substrate to eliminate the thermal influence from adjacent light emitting sections, and can rapidly output a high-resolution image.;SOLUTION: The multibeam semiconductor laser comprises the plurality of light emitting sections, each comprising a plurality of semiconductor layers including the contact layer of a first conductivity, a clad layer of the first conductivity, an active layer, a clad layer of a second conductivity, and a contact layer of the second conductivity; ohmic electrodes which are formed in correspondence with the respective light emitting sections and are electrically connected to the contact layer of the first conductivity and the contact layer of the second conductivity of each light emitting section; and the substrate which supports the plurality of light emitting sections and the ohmic electrodes. The substrate is made of a material having a lower coefficient of thermal conductivity than that of a semiconductor material of which the light emitting sections are made.;COPYRIGHT: (C)2005,JPO&NCIPI