Abstract
Abstract
Photonic crystal resonators with the C4v symmetry were designed and fabricated on quantum cascade lasers with a strain-compensated multiple quantum well to achieve single-mode and vertical surface emission at 4.32 μm. Their fabrication accuracy was confirmed by high-resolution reflection spectroscopy. The maximum output power was 10 mW at 77 K. A far-field pattern with a small divergence angle below 1 degree was observed. Its main peak had a donut shape, which was attributed to the spatial symmetry of the resonance mode of the photonic crystal.
Funder
Innovative Science and Technology Initiative for Security
the Nanotechnology Platform Japan Program
Subject
General Physics and Astronomy,General Engineering
Cited by
6 articles.
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