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  4. Experimental verification of the effects of atmospheric turbulence and retro-reflection on laser beams with orbital angular momentum
 
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2019
Conference Paper
Titel

Experimental verification of the effects of atmospheric turbulence and retro-reflection on laser beams with orbital angular momentum

Abstract
Retro-reflectors often find use in long-range laser propagation experiments. They double the propagation distance and cancel atmospheric tip/tilt alleviating the hardware requirements on the laser transceiver system. On the other hand, the effects that a retro-reflector can have on collimated or focused laser beams have not been thoroughly investigated. Additionally, for use in combination with beams carrying orbital angular momentum, which become increasingly popular in free-space optical communications, retro-reflector's effect must also be analysed. Demodulation efficiency of a communications system based on such beams is very sensitive to the fidelity of helical wavefronts and therefore retroreflector's effect on both amplitude and phase for collimated and focused orbital angular momentum beams should be studied.
Author(s)
Bellossi, Raphaƫl
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
Lambert, Andrew
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
Gladysz, Szymon
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
Hauptwerk
Environmental Effects on Light Propagation and Adaptive Systems II
Konferenz
Conference "Environmental Effects on Light Propagation and Adaptive Systems" 2019
Thumbnail Image
DOI
10.1117/12.2535748
Language
English
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Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
Tags
  • orbital angular momen...

  • laser propagation

  • retro-reflector turbu...

  • free space optical co...

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