Vertical cavity surface emitting laser including meta structure reflector and optical device including the vertical cavity surface emitting laser

A vertical cavity surface emitting laser comprising:

• a gain layer comprising an upper clad layer, a lower clad layer, an active layer disposed between the upper clad layer and the lower clad layer and configured to generate light;
• a first electrode and a second electrode spaced apart from each other;
• a first distributed Bragg reflector disposed below the gain layer;
• a meta structure reflector disposed above the gain layer and comprising a plurality of nano structures having a sub wavelength dimension;
• and
• a heat sink configured to dissipate heat generated from the gain layer.