Plenoptic wavefront sensor for free space optical communications
A plenoptic wavefront sensor is proposed for the measurement of the atmospheric turbulence on satellite-to-ground optical communications. The design will be based on the outcome of the performance simulations for the specific site Teide Observatory (Spain). The performance of the plenoptic wavefront sensor is compared to a Shack-Hartmann wavefront sensor operating under the same conditions. Scenarios with high signal-to-noise ration are considered with a main focus on communications with Low Earth Orbit satellites and with Geostationary satellites. Special attention is paid to the difference in performance between both wavefront sensors when affected by scintillation. The model is defined for space-to-ground laser communications at 532nm, 1064nm, and 1550nm assuming several apertures for the receiver telescope. This paper presents the numerical simulations and main findings regarding phase retrieval and the wavefront sensor behaviour in weak and strong atmospheric turbulence regimes.
The Australian National Univ. (Australia)
Dr Noelia Martínez is an postdoctoral researcher working in Adaptive Optics at the Australian National University Advanced Instrumentation and Technology Centre in Canberra, Australia. She obtained with PhD degree in the University of La Laguna, Canary Islands (Spain) in September 2019, on the topic “Adaptive Optics for Free Space Optical Communications and generation of Laser Guide Stars”. Her primary areas of interest are astronomical and space instrumentation, focusing onto the adaptive optics and laser systems technologies.