Abstract
We have analyzed a phased-array semiconductor laser coupled to an external cavity containing a spatial filter. The results indicate that the external cavity-spatial filter combination couples the natural supermodes of the array. Thus if a single supermode were to be emitted by the antireflection-coated facet, the reflected field would couple into many supermodes of the same parity. By self-consistently modeling the laser-cavity configuration we show that substantial mode mixing occurs in practical cases and its effect is more pronounced when the coupling coefficient is small.
| Original language | English |
|---|---|
| Pages (from-to) | 185-187 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 49 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1986 |
| Externally published | Yes |