Band-edge lasers based on randomly mixed photonic crystals.
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.
Kim
Sunghwan
S
Department of Physics and Astronomy & Inter-University Semiconductor Research Center, Seoul National University, Seoul 151-747, Korea.
Yoon
Sungjoon
S
Seok
Hyojun
H
Lee
Jeongkug
J
Jeon
Heonsu
H