An experimental campaign for the propagation of laser modes carrying orbital angular momentum (OAM) over 1 kilometer has been established at UANDES university campus. We describe our method for estimating OAM spectra and the average topological charge values from the images delivered by Shack-Hartmann sensor. For OAM beams transmitted with a single topological charge we analyze the average departure of the measured charge with respect to the intended one and the spread of these values as a function of turbulence strength.
|Title of host publication||Laser Communication and Propagation through the Atmosphere and Oceans XII|
|Editors||Jaime A. Anguita, Jeremy P. Bos, David T. Wayne|
|State||Published - 2023|
|Event||Laser Communication and Propagation through the Atmosphere and Oceans XII 2023 - San Diego, United States|
Duration: 22 Aug 2023 → 23 Aug 2023
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Conference||Laser Communication and Propagation through the Atmosphere and Oceans XII 2023|
|Period||22/08/23 → 23/08/23|
Bibliographical notePublisher Copyright:
© 2023 SPIE.
- FSO communications
- laser propagation
- OAM modulation
- Orbital angular momentum