| 摘要 |
PURPOSE:To prevent disturbance of a mode, monitor a light and fetch a single by forming a V-shaped groove in the stepped part of a base having a lower flat part where a laser element is fixed and giving a light reflective property to an inclined face opposed to a laser element facing. CONSTITUTION:A V-shaped groove is formed on the stepped part of a base-having a lower flat part where a laser element is fixed, and a light reflection property is given to an inclined part to the facing of a laser element. For instance, a stepped part 8 is provided on a base consisting of a semiconductor to form a V-shaped groove 13. On the upper flat part of the front of the base 8 split in half by the groove part 13, a semiconductor layer 9 of other electroconductive type is formed and on the lower flat part, a semiconductor element 16 is fixed. On the inclined part opposed to the facing of a laser element in the groove part 13, a thin insulation film 14 and a thin metal film 15 are formed. Under this constitution, it is possible to prevent disturbance of a mode and obtain a laser device capable of monitoring a light and fetching a signal. |
