Abstract
Photonic crystal heterostructure cavity has ultra high Q factor and integrates with a low loss photonic crystal waveguide. In photonic integrated circuits, this element has attracted much attention in many application. Owing to the zero-dimensional confinement properties, quantum dots can reduce the threshold current, lower the temperature dependence, and higher differential gain. The photonic crystal heterostructure cavities are formed by simply adjusting numbers of holes in the central region in the waveguide and shifting the holes away from the waveguide by distance. It is easy for fabrication. In the thesis, we integrate these benefits in a photonic crystal heterostructure laser in a InAs membrane.