Dr. Julia W. Evans Profile

Dr. Julia W. Evans

Post-Doctoral Researcher at Lawrence Livermore National Lab

SPIE Involvement:

Author

Publications (21)

Proceedings Article | 15 February 2012 Paper

Paper

MEMS practice: from the lab to the telescope

Katie Morzinski, Andrew Norton, Julia Evans, Layra Reza, Scott Severson, Daren Dillon, Marc Reinig, Donald Gavel, Steven Cornelissen, Bruce Macintosh, Claire Max

Proceedings Volume 8253, 825304 (2012) https://doi.org/10.1117/12.910964

KEYWORDS: Microelectromechanical systems, Actuators, Adaptive optics, Gemini Planet Imager, Telescopes, Deformable mirrors, Calibration, Humidity, Inspection, Wavefronts

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Proceedings Article | 24 February 2009 Paper

Paper

Performance of a MEMS-based AO-OCT system using Fourier reconstruction

Julia Evans, Robert Zawadzki, Steve Jones, Scot Olivier, John Werner

Proceedings Volume 7209, 720905 (2009) https://doi.org/10.1117/12.808002

KEYWORDS: Wavefronts, Adaptive optics, Microelectromechanical systems, Error analysis, Actuators, Control systems, Photons, Deformable mirrors, Eye, Adaptive optics optical coherence tomography

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Proceedings Article | 24 February 2009 Paper

Paper

Preliminary characterization of Boston Micromachines' 4096-actuator deformable mirror

Andrew Norton, Julia Evans, Donald Gavel, Daren Dillon, David Palmer, Bruce Macintosh, Katie Morzinski, Steven Cornelissen

Proceedings Volume 7209, 72090I (2009) https://doi.org/10.1117/12.811681

KEYWORDS: Actuators, Adaptive optics, Microelectromechanical systems, Deformable mirrors, Gemini Planet Imager, Spatial frequencies, Wavefronts, Mirrors, Telescopes, Surface finishing

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Proceedings Article | 20 February 2009 Paper

Paper

Optical coherence tomography and Raman spectroscopy of the retina

Julia Evans, Robert Zawadzki, Rui Liu, James Chan, Stephen Lane, John Werner

Proceedings Volume 7171, 71710O (2009) https://doi.org/10.1117/12.807885

KEYWORDS: Raman spectroscopy, Optical coherence tomography, Retina, In vivo imaging, Raman scattering, Signal to noise ratio, Confocal microscopy, Molecular spectroscopy, Spectroscopy, Polymers

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Proceedings Article | 18 February 2009 Paper

Paper

Combined adaptive optics: optical coherence tomography and adaptive optics: scanning laser ophthalmoscopy system for retinal imaging

Robert Zawadzki, Steven Jones, Diana Chen, Stacey Choi, Julia Evans, Scot Olivier, John Werner

Proceedings Volume 7163, 71630F (2009) https://doi.org/10.1117/12.809419

KEYWORDS: Optical coherence tomography, Scanning laser ophthalmoscopy, Adaptive optics optical coherence tomography, Adaptive optics, Imaging systems, Scanners, Eye, Retinal scanning, Data acquisition, Retina

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Proceedings Article | 30 December 2008 Paper

Paper

Challenges and possibilities for developing adaptive optics: ultra-high resolution optical coherence tomography for clinical in vivo retinal imaging

Robert Zawadzki, Stacey Choi, Julia Evans, John Werner

Proceedings Volume 7139, 71390X (2008) https://doi.org/10.1117/12.819169

KEYWORDS: Adaptive optics optical coherence tomography, Adaptive optics, Optical coherence tomography, Eye, Image resolution, Imaging systems, Retinal scanning, Wavefront sensors, Retina, Chromatic aberrations

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Proceedings Article | 17 July 2008 Paper

Paper

Testing the APLC on the LAO ExAO testbed

Sandrine Thomas, Rémi Soummer, Daren Dillon, Bruce Macintosh, Julia Evans, Donald Gavel, Anand Sivaramakrishnan, Christian Marois, Ben Oppenheimer

Proceedings Volume 7015, 70156I (2008) https://doi.org/10.1117/12.789691

KEYWORDS: Coronagraphy, Wavefronts, Microelectromechanical systems, Adaptive optics, Mirrors, Planets, Gemini Planet Imager, Manufacturing, Stars, Point spread functions

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Proceedings Article | 15 July 2008 Paper

Paper

Contrast analysis and stability on the ExAO testbed

Julia Evans, Sandrine Thomas, Donald Gavel, Daren Dillon, Bruce Macintosh

Proceedings Volume 7015, 70156K (2008) https://doi.org/10.1117/12.789452

KEYWORDS: Microelectromechanical systems, Point spread functions, Speckle pattern, Mirrors, Motion measurement, Adaptive optics, Diffraction, Coronagraphy, Wavefronts, Thermal effects

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Proceedings Article | 11 March 2008 Paper

Paper

Ultra-high resolution adaptive optics: optical coherence tomography for in vivo imaging of healthy and diseased retinal structures

Robert Zawadzki, Yan Zhang, Steven Jones, Stacey Choi, Barry Cense, Julia Evans, Donald Miller, Scot Olivier, John Werner

Proceedings Volume 6844, 684408 (2008) https://doi.org/10.1117/12.764115

KEYWORDS: Adaptive optics optical coherence tomography, Optical coherence tomography, Adaptive optics, Speckle, Image resolution, Visualization, Eye, Retina, Imaging systems, In vivo imaging

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Proceedings Article | 27 February 2008 Paper

Paper

Amplitude variations on the ExAO testbed: Part II

Sandrine Thomas, Julia Evans, Donald Phillion, Donald Gavel, Daren Dillon, Bruce Macintosh

Proceedings Volume 6888, 68880J (2008) https://doi.org/10.1117/12.771766

KEYWORDS: Microelectromechanical systems, Mirrors, Reflectivity, Actuators, Adaptive optics, Wavefronts, Interferometers, Gold, Spectroscopy, Diffraction

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Proceedings Article | 8 February 2008 Paper

Paper

Compact MEMS-based adaptive optics: optical coherence tomography for clinical use

Diana Chen, Scot Olivier, Steven Jones, Robert Zawadzki, Julia Evans, Stacey Choi, John Werner

Proceedings Volume 6888, 68880F (2008) https://doi.org/10.1117/12.772035

KEYWORDS: Adaptive optics, Mirrors, Adaptive optics optical coherence tomography, Monochromatic aberrations, Optical coherence tomography, Scanners, Deformable mirrors, Telescopes, Wavefront sensors, Eye

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Proceedings Article | 8 February 2008 Paper

Paper

Performance of a MEMS-based AO-OCT system

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

Proceedings Volume 6888, 68880G (2008) https://doi.org/10.1117/12.771673

KEYWORDS: Wavefronts, Adaptive optics, Microelectromechanical systems, Error analysis, Eye, Adaptive optics optical coherence tomography, Eye models, Point spread functions, Deformable mirrors, Control systems

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Proceedings Article | 19 September 2007 Paper

Paper

Amplitude variations on the ExAO testbed

Julia Evans, Sandrine Thomas, Daren Dillon, Donald Gavel, Donald Phillion, Bruce Macintosh

Proceedings Volume 6693, 669312 (2007) https://doi.org/10.1117/12.735741

KEYWORDS: Microelectromechanical systems, Phase measurement, Reflectivity, Mirrors, Wavefronts, Charge-coupled devices, Gold, Adaptive optics, Diffraction, Spatial frequencies

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Proceedings Article | 9 February 2007 Paper

Paper

Ultrahigh-resolution adaptive optics - optical coherence tomography: toward isotropic 3-um resolution for in vivo retinal imaging

Robert Zawadzki, Yan Zhang, Steven Jones, R. Daniel Ferguson, Stacey Choi, Barry Cense, Julia Evans, Diana Chen, Donald Miller, Scot Olivier, John Werner

Proceedings Volume 6429, 642909 (2007) https://doi.org/10.1117/12.704639

KEYWORDS: Adaptive optics, Adaptive optics optical coherence tomography, Optical coherence tomography, Eye, Light sources, Wavefronts, Image resolution, Chromatic aberrations, Retina, Imaging systems

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Proceedings Article | 28 June 2006 Paper

Paper

The Extreme Adaptive Optics Testbed at UCSC: current results and coronagraphic upgrade

Scott Severson, Brian Bauman, Daren Dillon, Julia Evans, Don Gavel, Bruce Macintosh, Katie Morzinski, Dave Palmer, Lisa Poyneer

Proceedings Volume 6272, 62722J (2006) https://doi.org/10.1117/12.672341

KEYWORDS: Wavefronts, Microelectromechanical systems, Actuators, Coronagraphy, Adaptive optics, Gemini Planet Imager, Wavefront sensors, Spatial frequencies, Optical testing, Point spread functions

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Proceedings Article | 28 June 2006 Paper

Paper

Characterizing the potential of MEMS deformable mirrors for astronomical adaptive optics

Katie Morzinski, Julia Evans, Scott Severson, Bruce Macintosh, Daren Dillon, Don Gavel, Claire Max, Dave Palmer

Proceedings Volume 6272, 627221 (2006) https://doi.org/10.1117/12.672470

KEYWORDS: Actuators, Microelectromechanical systems, Spatial frequencies, Deformable mirrors, Adaptive optics, Mirrors, Wavefronts, Gemini Planet Imager, Optical testing, Surface finishing

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Proceedings Article | 23 January 2006 Paper

Paper

Extreme adaptive optics testbed: performance and characterization of a 1024-MEMS deformable mirror

Julia Evans, Katie Morzinski, Scott Severson, Lisa Poyneer, Bruce Macintosh, Daren Dillon, Layra Reza, Donald Gavel, David Palmer, Scot Olivier, Paul Bierden

Proceedings Volume 6113, 61130I (2006) https://doi.org/10.1117/12.648977

KEYWORDS: Actuators, Microelectromechanical systems, Wavefronts, Adaptive optics, Deformable mirrors, Spatial frequencies, Electronics, Optical testing, Interferometers, Diffraction

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Proceedings Article | 15 September 2005 Paper

Paper

Extreme adaptive optics testbed: high contrast measurements with a MEMS deformable mirror

Julia Evans, Katie Morzinski, Layra Reza, Scott Severson, Lisa Poyneer, Bruce Macintosh, Daren Dillon, Gary Sommargren, David Palmer, Don Gavel, Scot Olivier

Proceedings Volume 5905, 59050Y (2005) https://doi.org/10.1117/12.619140

KEYWORDS: Actuators, Wavefronts, Microelectromechanical systems, Adaptive optics, Deformable mirrors, Diffraction, Optical testing, Spatial frequencies, Point spread functions, Imaging systems

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Proceedings Article | 25 October 2004 Paper

Paper

Extreme adaptive optics testbed: results and future work

Julia Wilhelmsen Evans, Gary Sommargren, Lisa Poyneer, Bruce Macintosh, Scott Severson, Daren Dillon, Andrew Sheinis, Dave Palmer, N. Jeremy Kasdin, Scot Olivier

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.551762

KEYWORDS: Wavefronts, Adaptive optics, Microelectromechanical systems, Diffraction, Optical testing, Point spread functions, Control systems, Phase shifting, Interferometers, Deformable mirrors

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Proceedings Article | 25 October 2004 Paper

Paper

eXtreme Adaptive Optics Planet Imager: overview and status

Bruce Macintosh, Brian Bauman, Julia Wilhelmsen Evans, James Graham, Christopher Lockwood, Lisa Poyneer, Daren Dillon, Don Gavel, Joseph Green, James Lloyd, Russell Makidon, Scot Olivier, Dave Palmer, Marshall Perrin, Scott Severson, Andrew Sheinis, Anand Sivaramakrishnan, Gary Sommargren, Remi Soummer, Mitchell Troy, J. Kent Wallace, Edward Wishnow

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.552188

KEYWORDS: Adaptive optics, Point spread functions, Wavefronts, Planets, Coronagraphy, Wavefront sensors, Telescopes, Stars, Imaging systems, Calibration

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Proceedings Article | 19 November 2003 Paper

Paper

Extreme adaptive optics planet imager: XAOPI

Bruce Macintosh, James Graham, Lisa Poyneer, Gary Sommargren, Julia Wilhelmsen, Don Gavel, Steve Jones, Paul Kalas, James Lloyd, Russ Makidon, Scot Olivier, Dave Palmer, Jennifer Patience, Marshall Perrin, Scott Severson, Andrew Sheinis, Anand Sivaramakrishnan, Mitch Troy, J. Wallace

Proceedings Volume 5170, (2003) https://doi.org/10.1117/12.506836

KEYWORDS: Wavefronts, Adaptive optics, Wavefront sensors, Planets, Imaging systems, Coronagraphy, Point spread functions, Stars, Telescopes, Mirrors

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Showing 5 of 21 publications

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