Demonstration of depth-resolved wavefront sensing using a swept-source coherence-gated Shack-Hartmann wavefront sensor

Wang, Jingyu, Podoleanu, Adrian G.H. (2015) Demonstration of depth-resolved wavefront sensing using a swept-source coherence-gated Shack-Hartmann wavefront sensor. In: Proceedings of SPIE. 9312. ISBN 978-1-62841-402-8. (doi:10.1117/12.2079253) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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http://www.dx.doi.org/10.1117/12.2079253

Abstract

In this report we demonstrate results of measuring wavefront aberrations from different depths in a fabricated phantom using a coherence-gated Shack-Hartman wavefront sensing technique (CG-SH/WFS). The SH/WFS is equipped with a Mach-Zehnder interferometer and the coherence gate operates on principles of swept source (SS) interferometry. The CG-SH/WFS is able to differentiate wavefront signals from different depths separated by a depth resolution of 7.1 micron. The CG-SH/WFS delivers a similar SH spot pattern as that provided by a conventional SH/WFS. Due to the coherence gate, the sensor is capable of eliminating stray reflections. Hereby we present the results of measuring depth-resolved wavefront aberrations. The method is robust and all depth-resolved aberrations are recorded simultaneously without any mechanical movement. This technique has the potential of providing depth resolved correction in adaptive optics assisted ophthalmology imaging and in nonlinear microscopy.

Item Type: Conference or workshop item (Proceeding)
DOI/Identification number: 10.1117/12.2079253
Additional information: This is available as OPEN ACCESS by clicking on the URL.
Uncontrolled keywords: Wavefront sensors ; Wavefront aberrations ; Wavefronts ; Adaptive optics ; Interferometry ; Mach-Zehnder interferometer ; Microscopy ; Ophthalmology ; Sensors
Subjects: Q Science > QC Physics > QC355 Optics
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Giles Tarver
Date Deposited: 20 Aug 2015 11:43 UTC
Last Modified: 29 May 2019 15:56 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50232 (The current URI for this page, for reference purposes)
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