Hannover 2013 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 43: Poster II

Q 43.53: Poster

Wednesday, March 20, 2013, 16:00–18:30, Empore Lichthof

Optomechanical Crystals in Diamond — •Felix Guldner, Laura Kipfstuhl, and Christoph Becher — Universität des Saarlandes, Experimentalphysik, 66123 Saarbrücken

The realization of photonic crystal microcavities in diamond has successfully been demonstrated, both in simulation and fabrication. Generally, photonic crystals confining light can at the same time be designed as phononic crystals confining mechanical vibrations. The simultaneous localization of optical and acoustical modes in a single structure allows for optomechanical coupling due to the photoelastic effect and shifting material boundaries.

Its extraordinary mechanical properties, in particular its high Young's modulus, make diamond a very promising candidate for the realization of an optomechanical system with acoustical resonances in the range of few 10 GHz. Possible applications for these optomechanical crystals are manifold and reach from the area of quantum information science to high-precision measurements in sensing.

In a first step, we perform FDTD and FEM simulations to develop a design for optomechanical crystals capable of localizing both optical and acoustical modes. We outline methods for calculating and improving the coupling between these modes.