High performance quantum cascade lasers based on three-phonon-resonance design

Citation:

Qijie Wang, Christian Pflugl, Laurent Diehl, Federico Capasso, Tadataka Edamura, Shinichi Furuta, Masamichi Yamanishi, and Hirofumi Kan. 2009. “High performance quantum cascade lasers based on three-phonon-resonance design.” APPLIED PHYSICS LETTERS, 94, 1.
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Abstract:

A quantum cascade laser structure based on three-phonon-resonance design is proposed and demonstrated. Devices, emitting at a wavelength of 9 mu m, processed into buried ridge waveguide structures with a 3 mm long, 16 mu m wide cavity and a high-reflection (HR) coating have shown peak output powers of 1.2 W, slope efficiencies of 1 W/A, threshold current densities of 1.1 kA/cm(2), and high wall-plug efficiency of 6% at 300 K. A 3 mm long, 12 mu m wide buried-heterostructure device without a HR coating exhibited continuous wave output power of as high as 65 mW from a single facet at 300 K.
Last updated on 05/23/2020