Enhanced free space beam capture by improved optical tapers

Bartley T, Heim B, Elser DA, Sych D, Sabuncu M, Wittmann C, Lindlein N, Marquardt C, Leuchs G (2010)

Publication Status: Published

Publication Type: Authored book, Volume of book series

Publication year: 2010

Pages Range: 100-107

Event location: Naples

ISBN: 9783642117305

DOI: 10.1007/978-3-642-11731-2_13

Abstract

In our continuous variable quantum key distribution (QKD) scheme, the homodyne detection set-up requires balancing the intensity of an incident beam between two photodiodes. Realistic lens systems are insufficient to provide a spatially stable focus in the presence of large spatial beam-jitter caused by atmospheric transmission. We therefore present an improved geometry for optical tapers which offer up to four times the angular tolerance of a lens. The effective area of a photodiode can thus be increased, without decreasing its bandwidth. This makes them suitable for use in our free space QKD experiment and in free space optical communication in general. © Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering 2010.

Authors with CRIS profile

Bettina Heim Lehrstuhl für Experimentalphysik (Optik) Dominique Elser Lehrstuhl für Experimentalphysik (Optik) Christoffer Wittmann Lehrstuhl für Experimentalphysik (Optik) Norbert Lindlein Lehrstuhl für Experimentalphysik (Optik) Christoph Marquardt Institut für Optik, Information und Photonik Gerhard Leuchs Lehrstuhl für Experimentalphysik (Optik)

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Bartley, T., Heim, B., Elser, D.A., Sych, D., Sabuncu, M., Wittmann, C.,... Leuchs, G. (2010). Enhanced free space beam capture by improved optical tapers.

MLA:

Bartley, Tim, et al. Enhanced free space beam capture by improved optical tapers. 2010.

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