ELECTROOPTIC BIREFRINGENCE IN SEMICONDUCTOR VERTICAL-CAVITY LASERS

Birefringence induced by the electro-optic effect is demonstrated in v ertical-cavity surface-emitting lasers (VCSEL). This is done by compar ing two types of optically pumped VCSELs: VCSELs with standard pin-dop ing and VCSELs with symmetrical pip-doping. The observed birefringence in these VCSELs differs by an order of magnitude, a difference that w e ascribe to the presence and absence, respectively, of electro-optic birefringence. (C) 1997 American Institute of Physics.