Hentschel Martina, Kwon Tae-Yoon, Belkin Mikhail A, Audet Ross, Capasso Federico
Max-Planck-Institut für Physik komplexer Systeme, Dresden, Germany.
Opt Express. 2009 Jun 8;17(12):10335-43. doi: 10.1364/oe.17.010335.
We perform ray and wave simulations of passive and active spiral-shaped optical microcavities, comparing our results to experimental data obtained with mid-infrared quantum cascade spiral microlasers. Focusing on the angular emission characteristics, we find that both ray and wave simulations are consistent with the experimental data, showing richly-featured, multidirectional far-field emission patterns in the case of uniform pumping and TM-polarized light. Active cavity simulations using the Schr odinger-Bloch model indicate that selective pumping of the quantum cascade spiral microlasers near the resonator boundary will yield unidirectional laser emission.
