Berlin 2005 – wissenschaftliches Programm
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Q: Quantenoptik und Photonik
Q 20: Poster Fallen & Kühlung
Q 20.9: Poster
Montag, 7. März 2005, 11:00–12:30, Poster HU
A laser cooled Indium atomic beam for Atomic Nanofabrication — •Bernhard Klöter, Ruby dela Torre, Jae-Ihn Kim, Claudia Weber, Ulrich Rasbach, and Dieter Meschede — Institut für Angewandte Physik, Wegelerstr. 8, 53115 Bonn
Atomic Nanofabrication (ANF) requires highly collimated and intense atomic beams that can be created by laser cooling. We plan to structure an Indium atomic beam by the optical dipole force in an inhomogeneous, near resonant light field which acts as a highly regular and immaterial mask for the atoms. Since Indium atoms can directly be deposited on a substrate, the co-deposition of Indium, Aluminum and Arsenic offers the possibility to produce 3D periodically structured III-V semiconductors by selectively changing the Indium concentration and thus the index of refraction in an (InxAl1−x)As compound during the growth process. The period of the modulation of the index of refraction is consistent with optical wavelengths used in opto-electronics. Our detailed investigations on laser cooling of Indium and first results of ANF with a 1D standing wave will be presented.