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23 February 2010 High-frequency tuning of photonic crystal defect cavity modes using surface acoustic waves
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Abstract
We study the influence of the mechanical deformation induced by a surface acoustic wave (SAW) on the resonance frequency of a defect cavity in a 2D photonic crystal membrane. Using FDTD-simulations we determine the resonance frequency and quality factor of a nanocavity of a GaAs based structure with embedded InAs quantum dots. Under the influence of a SAW, we find a periodic modulation of the cavity resonance wavelength of Δλ >2 nm accompanied by only a weak < 0.5× reduction of the Q-factor. Initial experiments for a SAW wavelength of ~ 1.8μm show a pronounced broadening of the time-integrated cavity emission line corresponding to a shift of ≥ 1 nm.
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D. A. Fuhrmann, H. Kim, S. M. Thon, J. Jambreck, J. Ebbecke, D. Bouwmeester, P. M. Petroff, A. Wixforth, and H. J. Krenner "High-frequency tuning of photonic crystal defect cavity modes using surface acoustic waves", Proc. SPIE 7609, Photonic and Phononic Crystal Materials and Devices X, 760908 (23 February 2010); https://doi.org/10.1117/12.842710
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