@inproceedings{647de5eaf90747c4a084213594bbfd82,
title = "Adaptive optics correction over a 3km near horizontal path",
abstract = "We present results of adaptive optics compensation at the receiver of a 3km optical link using a beacon laser operating at 635nm. The laser is transmitted from the roof of a seven-storey building over a near horizontal path towards a 127 mm optical receiver located on the second-floor of the Applied Optics Group at the National University of Ireland, Galway. The wavefront of the scintillated beam is measured using a Shack-Hartmann wavefront sensor (SHWFS) with high-speed CMOS camera capable of frame rates greater than 1kHz. The strength of turbulence is determined from the fluctuations in differential angle-of-arrival in the wavefront sensor measurements and from the degree of scintillation in the pupil plane. Adaptive optics compensation is applied using a tip-tilt mirror and 37 channel membrane mirror and controlled using a single desktop computer. The performance of the adaptive optics system in real turbulence is compared with the performance of the system in a controlled laboratory environment, where turbulence is generated using a liquid crystal spatial light modulator.",
keywords = "Adaptive optics, Scintillation, Strong turbulence",
author = "Ruth Mackey and Chris Dainty",
year = "2008",
doi = "10.1117/12.800172",
language = "English",
isbn = "9780819473394",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Optics in Atmospheric Propagation and Adaptive Systems XI",
note = "Optics in Atmospheric Propagation and Adaptive Systems XI ; Conference date: 16-09-2008 Through 18-09-2008",
}