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Journal Article

Near-field imaging and frequency tuning of a high-Q photonic crystal membrane microcavity

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Mujumdar, S., Koenderink, A. F., Suenner, T., Buchler, B. C., Kamp, M., Forchel, A., et al. (2007). Near-field imaging and frequency tuning of a high-Q photonic crystal membrane microcavity. Optics Express, 15(25), 17214-17220. doi:10.1364/OE.15.017214.


Cite as: http://hdl.handle.net/21.11116/0000-0002-9B3E-B
Abstract
We discuss experimental studies of the interaction between a nanoscopic object and a photonic crystal membrane resonator of quality factor Q=55000. By controlled actuation of a glass fiber tip in the near field of the photonic crystal, we constructed a complete spatio-spectral map of the resonator mode and its coupling with the fiber tip. On the one hand, our findings demonstrate that scanning probes can profoundly influence the optical characteristics and the near-field images of photonic devices. On the other hand, we show that the introduction of a nanoscopic object provides a low loss method for on-command tuning of a photonic crystal resonator frequency. Our results are in a very good agreement with the predictions of a combined numerical/analytical theory. (C) 2007 Optical Society of America.