Ultra Fast Nonlinear Optical Tuning of Photonic Crystal Cavities
classification
⚛️ physics.optics
keywords
cavitiescrystalfastmodulationphotonictuningabove-bandachieved
read the original abstract
We demonstrate fast (up to 20 GHz), low power (5 $\mu W$) modulation of photonic crystal (PC) cavities in GaAs containing InAs quantum dots. Rapid modulation through blue-shifting of the cavity resonance is achieved via free carrier injection by an above-band picosecond laser pulse. Slow tuning by several linewidths due to laser-induced heating is also demonstrated.
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