Berlin 2015 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 95: Poster IV B (Quantum dots and wires: Prepration, characterization, optical properties, and transport)

HL 95.18: Poster

Thursday, March 19, 2015, 14:00–20:00, Poster B

Theory of a QD-phonon laser — •Leon Droenner and Julia Kabuss — Institut für Theoretische Physik, Nichtlineare Optik und Quantenelektronik, Technische Universität Berlin, Berlin, Germany

The research area of nanophononics involves the investigation and manufactoring of phononic devices such as acoustic cavities, designed to confine a single acoustic phonon mode. These solid state based phonon cavities form the basis for different applications, such as the phonon laser or imaging.

External optical manipulation of the harmonic oszillator mode of the acoustic cavity can result in optical cooling or vibrational amplification. The proposed phonon laser is realized as a a two-level quantum dot-acoustic cavity-system, which is optically driven by a frequency detuned laser at the anti-Stokes resonance. This leads to a effective stimulated phonon emission based on the induced Raman-process.

Our study is focused on the generalisation of the one-quantum dot limes to an N-emitter system which can be reduced to an intuitive analytical treatment.