Portable optical-resolution photoacoustic microscopy with a pulsed laser diode excitation Appl. Phys. Lett. 102, 053704 (2013) Electro-optical and lasing properties of hybrid quantum dot/quantum well material system for reconfigurable photonic devices Appl. Phys. Lett. 102, 053110 (2013) Laser emissions from one-dimensional photonic crystal rings on silicon-dioxide Appl. Phys. Lett. 102, 051103 (2013) Suppression of spatial hole burning and pulse stabilization for actively modelocked quantum

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... cade lasers using quantum coherent absorption J. Appl. Phys. 113, 053106 (2013) Design and modeling of InP-based InGaAs/GaAsSb type-II "W" type quantum wells for mid-Infrared laser applications J. Appl. Phys. 113, 043112 (2013) Additional information on Appl. Phys. Lett. An index-guided tapered quantum cascade laser emitting near 9.5 lm with sloped sidewalls and no anti-reflection coating is presented, and the performance for devices with taper half-angles of 1 and 2 is investigated. The 1 device delivers up to 2.5 W of peak optical power at room temperature with beam quality-factor M 2 ¼ 2.08, while the two-degree device outputs 3.8 W with M 2 ¼ 2.25 for a maximum brightness of 1.87 MW cm À2 sr À1 . V C 2013 American Institute of Physics.