Terahertz Quantum Cascade Lasers based on two-dimensional photonic crystal resonators

We demonstrate high spectral control from surface emitting THz Quantum Cascade Lasers based on a two-dimensional photonic crystal cavity. The perforated top metallic contact acts as an in plane resonator in a tight double-metal plasmonic waveguide providing a strong optical feedback without needing three-dimensional cavity features. The optical far-field patterns do not exhibit the expected symmetry and the shape of the cavity mode. The difference is attributed to a metal surface plasmon mediated light outcoupling mechanism also responsible for the relatively low extraction efficiency. (C) 2008 Optical Society of America.


Published in:
Optics Express, 16, 5206-5217
Year:
2008
Keywords:
Laboratories:




 Record created 2010-11-30, last modified 2018-03-18


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