| 摘要 |
PURPOSE:To readily form by mounting a laser diode and a photo detector on a metal substrate and covering it with a transparent material having a reflector. CONSTITUTION:A laser diode 13 through a silicon mount 12 and a light quantity control photo detector 14 having a photo diode are disposed on the same plane on a metal substrate 11, and covered with a transparent resin 17 having a total-reflection prism for photo detecting part of the laser light. With this configuration, it is not necessary to stand the mount on the substrate to form a laser diode, and to dispose a photo diode on a different plane, thereby readily form a semiconductor laser device.
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