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We present a device for the spectral reconfiguration of a two-dimensional photonic crystal cavity (PCC) based on parallel semiconductor membranes. The mechanical motion of the slabs introduces a variation in the effective refractive index of the coupled waveguides where the photonic crystal is etched resulting in a shift of the free-space wavelength. Using an integrated electrostatic actuator we demonstrated...
We have measured the variation of the spontaneous emission rate with polarization for self-assembled single quantum dots in two-dimensional photonic crystal membranes, and obtained a maximum anisotropy factor of 6 between the decay rates of the two nondegenerate bright states.
The combination of structures with low-dimensional electronic confinement (quantum dots/dashes/wells) and photonic crystals in semiconductor lasers allows the integration of additional optical functionality in a very compact manner. In addition to providing ultimate control over the electronic and photonic states in the device, there are also practical benefits from this combination. The compact footprint...
Widely tunable monomode laser diodes emitting in the 1.9 mum wavelength range have been realized on InP based InAs/InGaAs quantum dash-in-a-well active material. 2D photonic crystal structures are used to define coupled cavity devices with two sections yielding a tuning range of 36 nm. Water vapor absorption measurements are demonstrated at wavelengths more than 34 nm apart using one such photonic...
Edge-emitting GaAs-Al0.45Ga0.55As quantum cascade microlasers with photonic crystal reflectors have been fabricated. The resonator length of 100 mum leads to a large free-pectral range of the longitudinal resonator modes. Owing to this large free-spectral range, single-mode operation with a sidemode suppression ratio of 20 dB at 80 K has been achieved. Stable single-mode emission is obtained and the...
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