28 June 2006 A fast amplified fringe modulator and its waveform optimisation
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Abstract
For temporally modulated fringe patterns, stellar interferometric fringe acquisition rates must generally exceed 1kHz to avoid significant atmospheric related loss of contrast and cross-talk between fringe components. Furthermore, sufficient travel and high waveform stability in the temporal phase modulation are essential to clean fringe visibility extraction. The authors present a system utilising a piezoelectric actuator that takes advantage of a resonating stage to achieve an accurate and stable high amplitude motion. Nanometre accuracy in waveform optimisation and in continuous waveform stability is demonstrated.
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Hrobjartur Thorsteinsson, Hrobjartur Thorsteinsson, David F. Buscher, David F. Buscher, } "A fast amplified fringe modulator and its waveform optimisation", Proc. SPIE 6268, Advances in Stellar Interferometry, 626837 (28 June 2006); doi: 10.1117/12.671442; https://doi.org/10.1117/12.671442
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