Frankfurt 2006 – wissenschaftliches Programm
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Q: Quantenoptik und Photonik
Q 37: Poster Wellenleitung und Informationsübertragung
Q 37.2: Poster
Dienstag, 14. März 2006, 16:30–18:30, Labsaal
Manufacturing and Micro Structuring Ultrathin Low Loss Optical Fibers — •Michael Pöllinger, Florian Warken, Guillem Sagué, Wolfgang Alt, Dietmar Haubrich, Dieter Meschede, and Arno Rauschenbeutel — Institut für Angewandte Physik, Universität Bonn, Wegelerstrasse 8, 53115 Bonn
Tapered optical fibers offer interesting perspectives for controlling and confining light fields. We have set up a fiber pulling device to fabricate ultrathin tapered fibers with low losses. In such fibers a considerable amount of the optical energy propagates in the evanescent field outside the fiber body. This field can be employed for a number of applications, ranging from atom traps to molecular spectroscopy.
Furthermore, we apply a focused CO2 laser beam to microstructure the tapered fibers. Confinement of light in fiber-based whispering gallery mode resonators should become possible this way [1]. Special attention is paid to the minimization of losses due to impurities and surface roughness. Microresonator Q-factors in the range of 108−109 should thus be acchievable.
Financial support by the DFG research unit 557 is gratefully acknowledged.
[1] Y.Louyer, D.Meschede, and A.Rauschenbeutel, Phys.Rev.A 72, 031801(R) (2005).