Citation:
Markus Geiser, Christian Pfluegl, Alexey Belyanin, Qijie Wang, Nanfang Yu, Tadanaka Edamura, Masamichi Yamanishi, Hirofumi Kan, Milan Fischer, Andreas Wittmann, Jerome Faist, and Federico Capasso. 2010. “
Gain competition in dual wavelength quantum cascade lasers.” OPTICS EXPRESS, 18, 10, Pp. 9900-9908.
Abstract:
We investigated dual wavelength mid-infrared quantum cascade lasers based on heterogeneous cascades. We found that due to gain competition laser action tends to start in higher order lateral modes. The mid-infrared mode with the lower threshold current reduces population inversion for the second laser with the higher threshold current due to stimulated emission. We developed a rate equation model to quantitatively describe mode interactions due to mutual gain depletion. (C) 2010 Optical Society of America