Composite metal/quantum-dot nanoparticle-array waveguides with compensated loss

Holmström, Petter; Thylén, Lars; Bratkovsky, Alexander
August 2010
Applied Physics Letters;8/16/2010, Vol. 97 Issue 7, p073110
Academic Journal
We calculate the dispersion properties of waveguides composed of near-field-coupled arrays of metal-clad quantum dots (QDs). The high optical loss incurred by operating the metal shells close to resonance is mitigated by using optical gain in the QDs. A condition for achieving loss compensated operation is given based on realistic material parameters and neglecting inhomogeneous broadening.


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