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23 April 2008 Photonic crystal nanolasers with controlled spontaneous emission
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Optical microcavities offer the ability to create extremely low-threshold lasers with high modulation bandwidth. In such microcavity devices, the fraction β of spontaneous emission into the lasing mode can become close to one and the step-like "threshold" gradually disappears. To implement such high-β devices, one can exploit Cavity Quantum ElectroDynamics effects, more precisely spontaneous emission enhancement. The concomitant effect of spontaneous emission acceleration is the preferential funnelling of spontaneous emission into the cavity mode. In our work, the cavity is a double- heterostructure cavity etched on a suspended membrane and contains InAs quantum dots. Lasing is achieved with β-factors higher than 0.44 and is sustained by less than 10 quantum dots.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. Braive, A. Beveratos, I. Sagnes, G. Lecamp, S. Guilet, L. Le Gratiet, A. Lemaître, A. Miard, G. Patriarche, C. Sauvan, P. Lalanne, and I. Robert-Philip "Photonic crystal nanolasers with controlled spontaneous emission", Proc. SPIE 6988, Nanophotonics II, 698813 (23 April 2008);

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