Wavefront control with a multi-actuator adaptive Lens in imaging applications

Conference paper (2017)

Authors

J. Mocci University of Verona
M. Cua Simon Fraser University
R.J. Zawadzki University of California
M.H.G. Verhaegen Team Raf Van de Plas - Mechanical, Maritime and Materials Engineering
M.V. Sarunic Simon Fraser University
S. Bonora CNR-Institute of Photonics and Nanotechnology
S Lee Simon Fraser University
Y Jian Simon Fraser University
P. Pozzi Team Raf Van de Plas - Mechanical, Maritime and Materials Engineering
M. Quintavalla CNR-Institute of Photonics and Nanotechnology
C. Trestino CNR-Institute of Photonics and Nanotechnology
H.R.G.W. Verstraete Team Raf Van de Plas - Mechanical, Maritime and Materials Engineering
D. Wahl Simon Fraser University
R. Muradore University of Verona
Research Group
Team Raf Van de Plas (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2017 J. Mocci, M. Cua, S. Lee, Y Jian, P. Pozzi, M. Quintavalla, C. Trestino, H.R.G.W. Verstraete, D. Wahl, R. Muradore, R.J. Zawadzki, M.H.G. Verhaegen, M.V. Sarunic, S. Bonora
DOI: https://doi.org/10.1117/12.2250016
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Published Date

2017

Language

English

Reuse Rights

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Delft Center for Systems and Control

Research Group

Team Raf Van de Plas

Abstract

The use of adaptive lenses instead of deformable mirrors can simplify the implementation of an adaptive optics system. The recently introduced Multi-actuator Adaptive Lens (MAL) can be used in closed loop with a wavefront sensor to correct for time-variant wavefront aberrations. The MAL can guarantee a level of correction and a response time similar to the ones obtained with deformable mirrors. The adaptive lens is based on the use of piezoelectric actuators and, without any obstruction or electrodes in the clear aperture, can guarantee a fast response time, less than ∼10ms. Our tests show that the MAL can be used both in combination with a wavefront sensor in a "classical" adaptive optics closed loop, or in a wavefront sensorless configuration. The latter has allowed us to design more compact and simple imaging systems for different microscopy platforms. We will show that the Multi-actuator Adaptive Lens has been successfully used for in-vivo OCT ophthalmic imaging in both mice and humans, as well as confocal and two photon microscopy. We tested and compared different optimization strategies such as coordinate search and the DONE algorithm. The results suggest that the MAL optimization can correct for eye aberrations with a pupil of 5mm or sample induced aberrations in microscopy.

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