Two dimensional photonic crystal vertical cavity surface emitting lasers

摘要

The 2D-PC surface emitting laser includes: a PC layer; and a lattice point for forming resonant-state arranged in the photonic crystal layer, and configured so that a light wave in a band edge in photonic band structure in the PC layer is diffracted in a plane of the PC layer, and is diffracted in a surface vertical direction of the PC layer. The perturbation for diffracting the light wave in the surface vertical direction of the PC layer is applied to the lattice point for forming resonant-state. The term “perturbation” means that modulation is periodically applied to the lattice point for forming resonant-state. For example, the periodic modulation may be refractive index modulation, hole-diameter modulation, or hole-depth modulation.

主权项

1. A two-dimensional photonic crystal surface emitting laser comprising:
a substrate; a first cladding layer disposed on the substrate; a second cladding layer disposed on the first cladding layer; an active layer inserted between the first cladding layer and the second cladding layer; a photonic crystal layer; and a lattice point for forming resonant-state arranged in the photonic crystal layer, the lattice point for forming resonant-state configured so that a light wave in a band edge in photonic band structure in the photonic crystal layer is diffracted in a plane of the photonic crystal layer, and is diffracted in a surface vertical direction of the photonic crystal layer, wherein perturbation for diffracting the light wave in the surface vertical direction of the photonic crystal layer is applied to the lattice point for forming resonant-state, and a plurality of the lattice points for forming resonant-state having at least two kinds of different sizes are arranged in the photonic crystal layer.