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Proceedings Paper

Characterising latency for AO optical sensors: an implementation
Author(s): Thomas Dixon; Francis Bennet; Ian Price; Francois Rigaut
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Paper Abstract

The latency of electro-optical components is of high importance in the design of Adaptive Optics systems, as it limits the performance of the control loop. There exists a need for a latency measurement method that can be constructed with simple components found in most Adaptive Optics labs that still provides a measurement accurate to sub-microseconds. Through a combination of research and experimentation, potential methodologies were investigated with the aim of producing reliable latency measurements. This document will discuss one such method, involving coupling a LED pulse output and detected pulse input signals to the same clock for easy comparison. For this method, a proof-of-concept was developed using MATLAB and small analogue electronics, and the performance characterised. This characterisation showed that although there is some merit to the method, improvements are necessary to increase the precision of the measurement to a level usable in Adaptive Optics systems.

Paper Details

Date Published: 27 July 2016
PDF: 7 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99096T (27 July 2016); doi: 10.1117/12.2232151
Show Author Affiliations
Thomas Dixon, Univ. of New South Wales (Australia)
Francis Bennet, Australian National Univ. (Australia)
Ian Price, Australian National Univ. (Australia)
Francois Rigaut, Australian National Univ. (Australia)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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