Skip to main content

Depth-Resolved Wavefront Aberrations using a Coherence-Gated Shack-Hartmann Wavefront Sensor

Tuohy, Simon, Podoleanu, Adrian G.H. (2010) Depth-Resolved Wavefront Aberrations using a Coherence-Gated Shack-Hartmann Wavefront Sensor. Optics Express, 18 (4). pp. 3458-3476. ISSN 1094-4087. (doi:10.1364/OE.18.003458) (KAR id:30208)

Language: English
Download (614kB) Preview
[thumbnail of oe-18-4-3458.pdf]
This file may not be suitable for users of assistive technology.
Request an accessible format
Official URL


In the present paper we investigate the possibility of narrowing the depth range of a physical Shack - Hartmann (SH) wavefront sensor (WFS) by using coherence gating. For the coherence gating, two low coherence interferometry (LCI) methods are evaluated and proof of principle configurations demonstrated: (i) a time domain LCI method based on phase shifting interferometry and (ii) a spectral domain LCI method, based on tuning a narrow band optical source. The two configurations are used to demonstrate each, the possibility of constructing a coherence gated (CG) SH/WFS. It is shown that these configurations produce spot patterns similar to those provided by a conventional SH/WFS. The two proof of principle configurations are also used to illustrate elimination of stray reflections in the interface optics which normally disturb the operation of conventional SH/WFSs. The speed and noise performance of the two CG-SH/WFS implementations are discussed.

Item Type: Article
DOI/Identification number: 10.1364/OE.18.003458
Additional information: This is available as OPEN ACCESS by clicking on the URL.
Uncontrolled keywords: Ophthalmology; Optical coherence tomography; Medical optics instrumentation; Adaptive Optics; Microscopy
Subjects: R Medicine > RE Ophthalmology
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Tina Thompson
Date Deposited: 20 Aug 2012 09:41 UTC
Last Modified: 16 Nov 2021 10:08 UTC
Resource URI: (The current URI for this page, for reference purposes)
Podoleanu, Adrian G.H.:
  • Depositors only (login required):