✍ Scribed by D. Englund; H. Altug; B. Ellis; J. Vučković
No coin nor oath required. For personal study only.
We describe recent progress in photonic crystal nanocavity lasers with an emphasis on our recent results on ultrafast pulse generation. These lasers produce pulses on the picosecond scale, corresponding to only hundreds of optical cycles. We describe laser dynamics in optically pumped single cavities and in coupled cavity arrays, at low and room temperature. Such ultrafast, efficient, and compact lasers show great promise for applications in high‐speed communications, information processing, and on‐chip optical interconnects.
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## Abstract We report ultrafast optical tuning of the reflection properties of MQW AlGaAs/InAlGaAs 1D photonic crystal waveguides using a reflection geometry, pump‐probe technique. Very fast pump‐induced shifts of photonic resonances between 800–900 nm by up to 18 nm nanometers are demonstrated. Th