Performance of a MEMS-based AO-OCT system

Julia W. Evans, Robert Zawadzki, Steve Jones, Samelia Okpodu, Scot Olivier, John S Werner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Adaptive optics (AO) and optical coherence tomography (OCT) are powerful imaging modalities that, when combined, can provide high-resolution, 3-D images of the retina. The AO-OCT system at UC Davis has been under development for 2 years and has demonstrated the utility of this technology for microscopic, volumetric, in vivo retinal imaging. The current system uses a bimorph deformable mirror (DM) made by AOptix Technologies, Inc. for low-order, high-stroke correction and a 140-actuator mirco-electrical-mechanical-system (MEMS) DM made by Boston Micromachines Corporation for high-order correction. We present our on-going characterization of AO system performance. The AO-OCT system typically has residual wavefront error of 100 nm rms. The correctable error in the system is dominated by low-order error that we believe is introduced by aliasing in the control loop. Careful characterization of the AO system will lead to improved performance and inform the design of future systems.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6888
DOIs
StatePublished - 2008
EventMEMS Adaptive Optics II - San Jose, CA, United States
Duration: Jan 22 2008Jan 24 2008

Other

OtherMEMS Adaptive Optics II
CountryUnited States
CitySan Jose, CA
Period1/22/081/24/08

Keywords

  • Adaptive optics
  • MEMS deformable mirror
  • Optical coherence tomography

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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    Evans, J. W., Zawadzki, R., Jones, S., Okpodu, S., Olivier, S., & Werner, J. S. (2008). Performance of a MEMS-based AO-OCT system. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6888). [68880G] https://doi.org/10.1117/12.771673