Band-edge lasers based on randomly mixed photonic crystals

Opt Express. 2010 Apr 12;18(8):7685-92. doi: 10.1364/OE.18.007685.


By employing two-dimensional InGaAsP photonic band-edge lasers, we have experimentally demonstrated that a random mixture of two different photonic crystals (PCs) possesses a new band structure that is intermediate to that of the two host PCs. The photonic band-edges shift monotonically, but with a strong bowing effect, as the mixed PC system is systematically transformed from one PC to the other. The experimental observations are in excellent agreement with finite-difference time-domain simulations and model calculations based on virtual-crystal approximation with compositional disorder effect included.

Publication types

  • Research Support, Non-U.S. Gov't