We present distributed-feedback Terahertz quantum cascade lasers operating in a double-metal ring waveguide. High power collimated emission in a single spectral mode is observed in the vertical direction. A double-slit configuration is employed to achieve both good electrical contacts and efficient power out-coupling. The optical properties of the devices are interpreted with the aid of finite element simulations. (C) 2009 Optical Society of America
Distributed feedback ring resonators for vertically emitting terahertz quantum cascade lasers
TREDICUCCI, ALESSANDRO;
2009-01-01
Abstract
We present distributed-feedback Terahertz quantum cascade lasers operating in a double-metal ring waveguide. High power collimated emission in a single spectral mode is observed in the vertical direction. A double-slit configuration is employed to achieve both good electrical contacts and efficient power out-coupling. The optical properties of the devices are interpreted with the aid of finite element simulations. (C) 2009 Optical Society of AmericaFile in questo prodotto:
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