Wang, J., Podoleanu, Adrian G.H. (2012) Demonstration of real-time depth-resolved Shack-Hartmann measurements. Optics Letters, 37 (23). pp. 4862-4864. ISSN 0146-9592. (doi:10.1364/OL.37.004862) (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) (KAR id:49366)
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. | |
Official URL: http://dx.doi.org/10.1364/OL.37.004862 |
Abstract
Shack-Hartmann wavefront sensors (SH-WFS) have little sensitivity in depth and hence are unsuitable for microscopy and are limited for retinal imaging. We demonstrate the first direct Shack-Hartmann measurement of wavefront originating from a multiple-layer target, in the presence of significant stray reflections that render a standard SH-WFS inoperable. A coherence-gate SH-WFS is implemented by adding time-domain low-coherence reflectometry gating to an SH-WFS configuration. The depth resolution is determined by the operational depth selection of the coherence gate, much narrower than the depth range of the SH-WFS. Five distinctive wavefronts are measured from five layers of a multiple-layer target. This paves the way toward depth-resolved wavefront sensing, which can significantly improve adaptive optics closed loops applied to microscopy and imaging of the retina. © 2012 Optical Society of America.
Item Type: | Article |
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DOI/Identification number: | 10.1364/OL.37.004862 |
Additional information: | This is available as OPEN ACCESS by clicking on the URL. |
Uncontrolled keywords: | Closed loops, Depth range, Depth resolution, Depth-resolved, Low-coherence, Reflectometry, Retinal imaging, Shack-Hartmann, Shack-Hartmann wavefront sensors, Stray reflections, Time domain, Wave-front sensing, Wavefronts, Electric appliances |
Subjects: |
Q Science > QC Physics Q Science > QC Physics > QC355 Optics |
Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
Depositing User: | Giles Tarver |
Date Deposited: | 16 Jul 2015 10:55 UTC |
Last Modified: | 05 Nov 2024 10:33 UTC |
Resource URI: | https://kar.kent.ac.uk/id/eprint/49366 (The current URI for this page, for reference purposes) |
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