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arXiv · 0907.1932

Electrically Switchable Photonic Molecule Laser

Gernot Fasching·Christoph Deutsch·Alexander Benz·Aaron Maxwell Andrews·Pavel Klang·Reinhard Zobl·Werner Schrenk·Gottfried Strasser·Paulius Ragulis·Vincas Tamosiunas·Karl Unterrainer
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Abstract

We have studied the coherent intercavity coupling of the evanescent fields of the whispering gallery modes of two terahertz quantum-cascade lasers implemented as microdisk cavities. The electrically pumped single-mode operating microcavities allow to electrically control the coherent mode coupling for proximity distances of the cavities up to 30-40 \mu\m. The optical emission of the strongest coupled photonic molecule can be perfectly switched by the electrical modulation of only one of the coupled microdisks. The threshold characteristics of the strongest coupled photonic molecule demonstrates the linear dependence of the gain of a quantum-cascade laser on the applied electric field.

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Gernot Fasching, Christoph Deutsch, Alexander Benz, Aaron Maxwell Andrews, Pavel Klang, Reinhard Zobl, Werner Schrenk, Gottfried Strasser, Paulius Ragulis, Vincas Tamosiunas, Karl Unterrainer. 2009-07-11. Electrically Switchable Photonic Molecule Laser. https://doi.org/10.1364/oe.17.020321

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