| 主权项 |
1. A laser device comprising:
a gallium and nitrogen containing material having a semipolar surface configured on an offcut orientation to one of either a (60-6-1) plane, a (60-61) plane, a (50-5-1) plane, a (50-51) plane, a (40-4-1) plane, (40-41) plane, a (30-3-1) plane, a (30-31) plane, a (20-2-1) plane, a (20-21) plane, a (30-3-2), or a (30-32) plane; a laser stripe region formed overlying a portion of the semipolar surface, the laser stripe region being characterized by a cavity orientation substantially parallel to the projection of the c-direction, the laser stripe region having a first end and a second end; the laser stripe region characterized by a length less than 300 μm; a first facet provided on the first end of the laser stripe region; a second facet provided on the second end of the laser stripe region; an n-type cladding region overlying the semipolar surface; an active region comprising at least one active layer region overlying the n-type cladding region, the active region comprising a quantum well region or a double hetero-structure region; and a p-type cladding region overlying the active region; wherein the laser stripe region is characterized by a width configured to emit a laser beam having a selected ratio of a first polarization state and a second polarization state, the width configured to emit the laser beam operable in a single lateral mode for an internal loss of less than 8 cm−1. |
