The semiconductor laser and the design method and the production method of possessing the reflected characteristic feature structure inside the cavity

摘要

Fabry Perot (FP) the laser device (1) the N type baseplate (2), the active territory (3), the P type cladding (4), the insulator (5) and has the contact (6). The cladding (4) has the plural slots (8) the sudden provision section which is provided (7). The slot causes the part longitudinal direction reflection of light. As for accurate position of the slot, in order to be able to obtain the mode of the specification which output light selects with the accuracy and estimate possible shape, it selects. With the method of designing slot pattern, thing both parties which control Fabry peromodo which thing and an optional quantity which select Fabry peromodo of specification preferentially as a peak luminous wave length adjoin are done. With the aforementioned method, Fabry peromodo of 1 sets inside that cavity is selected preferentially from other Fabry peromodo. The aforementioned method solves the problem of the semiconductor laser regarding the stability of the peak lasing wave length for thing and the temperature variation which decide peak lasing wave length beforehand this way. With the aforementioned method, functionality as the device which becomes independent and as a component of the device which consists of more complicated plural sections or the plural elements production of the multiple mode device which improves functional both parties becomes possible. Selective figure Figure 1A