Angular emission characteristics of quantum cascade spiral microlasers

Citation:

Martina Hentschel, Tae-Yoon Kwon, Mikhail A. Belkin, Ross Audet, and Federico Capasso. 2009. “Angular emission characteristics of quantum cascade spiral microlasers.” OPTICS EXPRESS, 17, 12, Pp. 10335-10343.

Abstract:

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 Schrodinger-Bloch model indicate that selective pumping of the quantum cascade spiral microlasers near the resonator boundary will yield unidirectional laser emission. (c) 2009 Optical Society of America
Last updated on 05/23/2020