Canet-Ferrer Josep, Martínez Luis J, Prieto Ivan, Alén Benito, Muñoz-Matutano Guillermo, Fuster David, González Yolanda, Dotor María L, González Luisa, Postigo Pablo A, Martínez-Pastor Juan P
UMDO (Unidad asociada al CSIC), P.O. Box 22085, E-46071 Valencia, Spain.
Opt Express. 2012 Mar 26;20(7):7901-14. doi: 10.1364/OE.20.007901.
The spontaneous emission rate and Purcell factor of self-assembled quantum wires embedded in photonic crystal micro-cavities are measured at 80 K by using micro-photoluminescence, under transient and steady state excitation conditions. The Purcell factors fall in the range 1.1 - 2 despite the theoretical prediction of ≈15.5 for the figure of merit. We explain this difference by introducing a polarization dependence on the cavity orientation, parallel or perpendicular with respect to the wire axis, plus spectral and spatial detuning factors for the emitters and the cavity modes, taking in account the finite size of the quantum wires.
