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Title: Performance of a MEMS-based AO-OCT system using Fourier Reconstruction

Abstract

Adaptive optics (AO) and optical coherence tomography (OCT) are powerful imaging modalities that, when combined, can provide high-resolution (3.5 {micro}m isotropic), 3-D images of the retina. The AO-OCT system at UC Davis has demonstrated the utility of this technology for microscopic, volumetric, in vivo retinal imaging. The current system uses an AOptix bimorph deformable mirror (DM) for low-order, high-stroke correction and a 140-actuator Boston Micromachines DM for high-order correction. Developments to improve performance or functionality of the instrument are on-going. Based on previous work in system characterization we have focused on improved AO control. We present preliminary results and remaining challenges for a newly implemented Fourier transform reconstructor (FTR). The previously reported error budget analysis is also reviewed and updated, with consideration of how to improve both the amount of residual error and the robustness of the system. Careful characterization of the AO system will lead to improved performance and inform the design of future systems.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
947762
Report Number(s):
LLNL-PROC-410449
TRN: US200905%%256
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: Photonics West, San Jose, CA, United States, Jan 24 - Jan 29, 2009
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUMM MECHANICS, GENERAL PHYSICS; 59 BASIC BIOLOGICAL SCIENCES; DESIGN; IN VIVO; MIRRORS; OPTICS; PERFORMANCE; RETINA; TOMOGRAPHY

Citation Formats

Evans, J, Zawadzki, R, Jones, S, Olivier, S, and Werner, J S. Performance of a MEMS-based AO-OCT system using Fourier Reconstruction. United States: N. p., 2009. Web.
Evans, J, Zawadzki, R, Jones, S, Olivier, S, & Werner, J S. Performance of a MEMS-based AO-OCT system using Fourier Reconstruction. United States.
Evans, J, Zawadzki, R, Jones, S, Olivier, S, and Werner, J S. Wed . "Performance of a MEMS-based AO-OCT system using Fourier Reconstruction". United States. https://www.osti.gov/servlets/purl/947762.
@article{osti_947762,
title = {Performance of a MEMS-based AO-OCT system using Fourier Reconstruction},
author = {Evans, J and Zawadzki, R and Jones, S and Olivier, S and Werner, J S},
abstractNote = {Adaptive optics (AO) and optical coherence tomography (OCT) are powerful imaging modalities that, when combined, can provide high-resolution (3.5 {micro}m isotropic), 3-D images of the retina. The AO-OCT system at UC Davis has demonstrated the utility of this technology for microscopic, volumetric, in vivo retinal imaging. The current system uses an AOptix bimorph deformable mirror (DM) for low-order, high-stroke correction and a 140-actuator Boston Micromachines DM for high-order correction. Developments to improve performance or functionality of the instrument are on-going. Based on previous work in system characterization we have focused on improved AO control. We present preliminary results and remaining challenges for a newly implemented Fourier transform reconstructor (FTR). The previously reported error budget analysis is also reviewed and updated, with consideration of how to improve both the amount of residual error and the robustness of the system. Careful characterization of the AO system will lead to improved performance and inform the design of future systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {1}
}

Conference:
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