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Published July 9, 2003 | Published
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Design and characterization of quantum dot photonic crystal lasers


Quantum dot photonic crystal lasers are demonstrated at room temperature by optical pulse pumping. Coupled cavities were designed based on square lattice PC slabs. Optimized two-dimensional photonic crystal cavities were defined in 200nm slabs with five-stacked InAS QDs layers. The two- and four-coupled cavities showed as incident pump power threshold as 120μW and 370μW, respectively, both from QD ground state emission range. Both clear threshold in pump power-output resonance power and resonance line width narrowing were observed from our membrane samples. The measured wavelengths matched very well with wavelengths predicted by 3D-Finite Difference Time Domain modelling.

Additional Information

© 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). The authors gratefully appreciate valuable discussions from Marko Loncar. This work was supported by the NSF under Grant ECS-9912039 and DMR-0103134, the AFOSR under F49620-01-1-0497, and by DARPA under MDA972-00-1-0019.

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