Regensburg 2013 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 70: Poster Session: Devices; Preparation and characterization; C/diamond; Si/Ge
HL 70.17: Poster
Wednesday, March 13, 2013, 16:00–20:00, Poster A
Carbon Nanotube spectroscopy in optical microcavities — •Thomas Hümmer1,2, Hanno Kaupp1,2, Matthias S. Hofmann1, Jonathan Noe1, Alexander Högele1, Theodor W. Hänsch1,2, and David Hunger1,2 — 1Ludwig-Maximilians-Universität München, Deutschland — 2Max-Planck Institut für Quantenoptik, Garching, Deutschland
We use fiber-based Fabry-Perot optical microcavities [1] with mode volumes down to a few tens of wavelengths cubed and high quality factors up to 107 to study single-walled carbon nanotubes (SWCNTs). Very recent progress in the growth of freestanding narrow-diameter SWCNTs has demonstrated that this system can show exceptional fluorescence properties, including a strong optical dipole transition, single photon emission characteristics, and close to Fourier limited linewidth [2]. Placing nanotubes inside an optical microcavity promises ultimative sensitivity for absorption spectroscopy and strong Purcell enhancement of fluorescence emission. Harnessing the full tunability and open access of fiber-based microcavities allows us to address a variety of CNTs at different locations and wavelengths with a single cavity. We show first experimental results on cavity enhanced spectroscopy of individual SWCNTs and discuss the potential for cavity QED with this system.
[1] Hunger, Reichel et al., NJP 12, 065038 (2010)
[2] Hofmann, Högele et al., arXiv: 1209.3429 (2012)