Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 23: Photonik 1

Q 23.5: Vortrag

Dienstag, 13. März 2012, 11:30–11:45, V38.01

Fiber Bragg grating resonator with integrated optical nanofiber for cavity quantum electrodynamics experiments — •Christian Wuttke¹, Martin Becker², Sven Brückner², Manfred Rothhardt², and Arno Rauschenbeutel¹ — ¹VCQ TU Wien – Atominstitut, Stadionallee 2, A-1020 Wien — ²Institut of Photonic Technologies, Albert-Einstein-Str. 9, D-07745 Jena

Subwavelength diameter optical fibers have proven to be a powerful tool for the efficient coupling of light and matter due to the strong lateral confinement of the light field. The coupling can be further enhanced with a resonator that also confines the light along the fiber. Such a resonator is highly attractive because the strong coupling regime of light and matter can be reached even with a moderate finesse of about 30. In this case, fiber Bragg gratings (FBGs) are a advantageous candidate as mirrors: They are fiber-integrated and can be tailored for a range of wavelengths and reflectivities. We present a realization of such a nanofiber resonator for a design wavelength of 852 nm based on two FBG mirrors which enclose a tapered optical fiber with a subwavelength-diameter waist. The resonator has a monolithic design and is intrinsically mode-matched to the fiber mode while being simultaneously tunable over many free spectral ranges.

We gratefully acknowledge financial support by the Volkswagen Foundation and the ESF.