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Microcavity lasers possess mechanical resonances due to stopbands in the Bragg reflector's phonon dispersion. By injecting a picosecond strain pulse into the resonator we excite these modes, providing an ultrafast effective modulation of the emission.
Controlling the position of individual quantum dots (QDs) by means of overgrowing a prepatterned substrate is a prospering research topic. In combination with an accurate alignment procedure, single site-controlled quantum dots (SCQDs) can be precisely retrieved after overgrowth and even integrated in optical resonator devices. This is an essential step towards the parallel fabrication of spatial...
We report on a scalable process to incorporate InAs quantum dots in spatially resonant devices. This process combines site controlled quantum dot growth with an accurate alignment of the device to the single QDs.
We report on high quality electrically driven quantum dot micropillar cavities with Q-factors up to 16.000. The high Q-factors allow the observation of pronounced single dot resonance effects with a Purcell enhancement of about 10.
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