Dr. Jason B. Stewart Profile

Dr. Jason B. Stewart

Technical Staff at MIT Lincoln Lab

SPIE Involvement:

Author

Publications (18)

Proceedings Article | 19 March 2013 Paper

Comparing adaptive optics approaches for NASA LCRD Ground Station #2

Jason Stewart, Daniel Murphy, John Moores, Andrew Fletcher, Keith Bonneau

Proceedings Volume 8610, 86100M (2013) https://doi.org/10.1117/12.2010126

KEYWORDS: Adaptive optics, Staring arrays, Error analysis, Fiber couplers, Wavefronts, Telescopes, Relays, Turbulence, Laser communications, Wavefront sensors

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Proceedings Article | 13 March 2013 Paper

Development of adaptive liquid microlenses and microlens arrays

Shaun Berry, Jason Stewart, Todd Thorsen, Ingrid Guha

Proceedings Volume 8616, 861610 (2013) https://doi.org/10.1117/12.2004353

KEYWORDS: Liquids, Lenses, Microlens, Quartz, Electrodes, Microlens array, Liquid lenses, Wavefronts, Dielectrics, Metals

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Proceedings Article | 16 February 2012 Paper

Critical considerations of pupil alignment to achieve open-loop control of MEMS deformable mirror in nonlinear laser scanning fluorescence microscopy

Wei Sun, Yang Lu, Jason Stewart, Thomas Bifano, Charles Lin

Proceedings Volume 8253, 82530H (2012) https://doi.org/10.1117/12.909652

KEYWORDS: Wavefront sensors, Microelectromechanical systems, Adaptive optics, Microscopes, Laser scanners, Mirrors, Control systems, Deformable mirrors, Luminescence, Imaging systems

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Proceedings Article | 14 February 2011 Paper

Ultra-low-power multiplexed electronic driver for high resolution deformable mirror systems

Mark Horenstein, Robert Sumner, Preston Miller, Thomas Bifano, Jason Stewart, Steven Cornelissen

Proceedings Volume 7930, 79300M (2011) https://doi.org/10.1117/12.876404

KEYWORDS: Actuators, Capacitors, Microelectromechanical systems, Mirrors, Transistors, Optical amplifiers, Amplifiers, Deformable mirrors, Field effect transistors, Multiplexing

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Proceedings Article | 14 February 2011 Paper

Polymorphic optical zoom with MEMS DMs

Yang Lu, Samuel Hoffman, Christopher Stockbridge, Andrew LeGendre, Jason Stewart, Thomas Bifano

Proceedings Volume 7931, 79310D (2011) https://doi.org/10.1117/12.874207

KEYWORDS: Zoom lenses, Microelectromechanical systems, Monochromatic aberrations, Contrast transfer function, Deformable mirrors, Microscopes, Objectives, Mirrors, Actuators, Prototyping

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Proceedings Article | 28 July 2010 Paper

MEMS deformable mirrors for astronomical adaptive optics

S. Cornelissen, A. Hartzell, J. Stewart, T. Bifano, P. Bierden

Proceedings Volume 7736, 77362D (2010) https://doi.org/10.1117/12.857296

KEYWORDS: Actuators, Microelectromechanical systems, Deformable mirrors, Wavefronts, Electronics, Adaptive optics, Mirrors, Astronomical adaptive optics, Astronomy, Gemini Planet Imager

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Proceedings Article | 18 February 2010 Paper

Through-wafer interconnects for high degree of freedom MEMS deformable mirrors

Alioune Diouf, Thomas Bifano, Jason Stewart, Steven Cornelissen, Paul Bierden

Proceedings Volume 7595, 75950N (2010) https://doi.org/10.1117/12.842341

KEYWORDS: Actuators, Gold, Diffractive optical elements, Microelectromechanical systems, Packaging, Silicon, Deformable mirrors, Error analysis, Semiconducting wafers, Silicon carbide

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Proceedings Article | 18 February 2010 Paper

Open loop control on large stroke MEMS deformable mirrors

Alioune Diouf, Thomas Bifano, Andrew Legendre, Yang Lu, Jason Stewart

Proceedings Volume 7595, 75950D (2010) https://doi.org/10.1117/12.842489

KEYWORDS: Actuators, Mirrors, Calibration, Microelectromechanical systems, Deformable mirrors, Monochromatic aberrations, Wavefronts, Zernike polynomials, Space mirrors, Linear filtering

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Proceedings Article | 18 February 2010 Paper

Low power MEMS modulating retroreflectors for optical communication

Jason Stewart, David Freedman, Steven Cornelissen, Mark Horenstein, Peter Woskov, Jonathan Tang

Proceedings Volume 7595, 759505 (2010) https://doi.org/10.1117/12.844936

KEYWORDS: Modulation, Modulators, Microelectromechanical systems, Mirrors, Retroreflectors, Silicon, Actuators, Optical communications, Sensors, Reflectivity

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Proceedings Article | 12 May 2009 Paper

Deformable MEMS mirrors in secure optical communication system

Leah Ziph-Schatzberg, Thomas Bifano, Steven Cornelissen, Jason Stewart, Zvi Bleier

Proceedings Volume 7318, 73180T (2009) https://doi.org/10.1117/12.818831

KEYWORDS: Modulators, Modulation, Retroreflectors, Mirrors, Microelectromechanical systems, Telecommunications, Sensors, Signal detection, Silicon, Optical communications

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Proceedings Article | 24 February 2009 Paper

Secure optical communication system utilizing deformable MEMS mirrors

Leah Ziph-Schatzberg, Thomas Bifano, Steven Cornelissen, Jason Stewart, Zvi Bleier

Proceedings Volume 7209, 72090C (2009) https://doi.org/10.1117/12.812145

KEYWORDS: Modulators, Mirrors, Retroreflectors, Modulation, Microelectromechanical systems, Telecommunications, Silicon, Signal detection, Laser communications, Sensors

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Proceedings Article | 8 February 2008 Paper

Path length control in a nulling coronagraph with a MEMS deformable mirror and a calibration interferometer

Shanti Rao, J. Kent Wallace, Rocco Samuele, Supriya Chakrabarti, Timothy Cook, Brian Hicks, Paul Jung, Benjamin Lane, B. Martin Levine, Chris Mendillo, Edouard Schmidtlin, Mike Shao, Jason Stewart

Proceedings Volume 6888, 68880B (2008) https://doi.org/10.1117/12.763652

KEYWORDS: Nulling interferometry, Calibration, Targeting Task Performance metric, Interferometers, Mirrors, Actuators, Coronagraphy, Deformable mirrors, Cameras, Microelectromechanical systems

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Proceedings Article | 8 February 2008 Paper

Fabrication of single crystalline MEMS DM using anodic wafer bonding

Alioune Diouf, Mike Gingras, Jason Stewart, Thomas Bifano, Steven Cornelissen, Paul Bierden

Proceedings Volume 6888, 68880U (2008) https://doi.org/10.1117/12.763124

KEYWORDS: Semiconducting wafers, Actuators, Wafer bonding, Mirrors, Microelectromechanical systems, Glasses, Silicon, Etching, Electrodes, Sputter deposition

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Proceedings Article | 8 February 2008 Paper

Precise open-loop control of MEMS deformable mirror shape

Thomas Bifano, Jason Stewart, Alioune Diouf

Proceedings Volume 6888, 68880P (2008) https://doi.org/10.1117/12.769492

KEYWORDS: Actuators, Mirrors, Fermium, Frequency modulation, Microelectromechanical systems, Deformable mirrors, Adaptive optics, Wavefronts, Calibration, Control systems

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Proceedings Article | 14 June 2006 Paper

The visible nulling coronagraph: architecture definition and technology development status

B. Levine, Francisco Aguayo, Thomas Bifano, S. Fregoso, Joseph Green, Benjamin Lane, Duncan Liu, Bertrand Mennesson, Shanti Rao, Rocco Samuele, Michael Shao, Edouard Schmidtlin, Eugene Serabyn, Jason Stewart, J. Wallace

Proceedings Volume 6265, 62651A (2006) https://doi.org/10.1117/12.672736

KEYWORDS: Mirrors, Actuators, Prisms, Interferometers, Coronagraphy, Planets, Nulling interferometry, Telescopes, Deformable mirrors, Wavefronts

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Proceedings Article | 23 January 2006 Paper

Design and development of a 329-segment tip-tilt piston mirror array for space-based adaptive optics

Jason Stewart, Thomas Bifano, Paul Bierden, Steven Cornelissen, Timothy Cook, B. Martin Levine

Proceedings Volume 6113, 61130O (2006) https://doi.org/10.1117/12.651373

KEYWORDS: Mirrors, Actuators, Coronagraphy, Electromechanical design, Polishing, Microelectromechanical systems, Surface roughness, Planets, Silicon, Oxides

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Proceedings Article | 23 August 2005 Paper

High-speed wavefront control using MEMS micromirrors

T. Bifano, J. Stewart

Proceedings Volume 5895, 58950Q (2005) https://doi.org/10.1117/12.619355

KEYWORDS: Actuators, Microelectromechanical systems, Mirrors, Wavefronts, Etching, Segmented mirrors, Control systems, Deformable mirrors, Silicon, Electrodes

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Proceedings Article | 25 March 1996 Paper

Zooming Web browser

Benjamin Bederson, James Hollan, Jason Stewart, David Rogers, Allison Druin, David Vick

Proceedings Volume 2667, (1996) https://doi.org/10.1117/12.235898

KEYWORDS: Visualization, Lenses, Zoom lenses, Lithium, Computer science, Internet, Interfaces, Cameras, Prototyping, Information visualization

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The World Wide Web (WWW) is becoming increasingly important for business, education, and entertainment. Popular web browsers make access to Internet information resources relatively easy for novice users. Simply by clicking on a link, a new page of information replaces the current one on the screen. Unfortunately however, after following a number of links, people can have difficulty remembering where they've been and navigating links they have followed. As one's collection of web pages grows and as more information of interest populates the web, effective navigation becomes an issue of fundamental importance. We are developing a prototype zooming browser to explore alternative mechanisms for navigating the WWW. Instead of having a single page visible at a time, multiple pages and the links between them are depicted on a large zoomable information surface. Pages are scaled so that the page in focus is clearly readable with connected pages shown at smaller scales to provide context. As a link is followed the new page becomes the focus and existing pages are dynamically repositioned and scaled. Layout changes are animated so that the focus page moves smoothly to the center of the display surface while contextual information provided by linked pages scales down. While our browser supports multiscale representations of existing HTML pages, we have also extended HTML to support multiscale layout within a page. This extension, Multi-Scale Markup Language, is at an early stage of development. It currently supports inclusion within a page of variable-sized dynamic objects, graphics, and other interface mechanisms from our underlying Pad++ substrate. This provides sophisticated client- side interactions, permits annotations to be added to pages, and allows page constituents to be used as independent graphical objects. In this paper, we describe our prototype web browser and authoring facilities. We show how simple extensions to HTML can support sophisticated client-side interactions. Finally, we discuss the results of preliminary user-interface testing and evaluation.

Showing 5 of 18 publications

Conference Committee Involvement (8)

MOEMS and Miniaturized Systems XVII

30 January 2018 | San Francisco, California, United States

MOEMS and Miniaturized Systems XVI

30 January 2017 | San Francisco, California, United States

MOEMS and Miniaturized Systems XV

15 February 2016 | San Francisco, California, United States

MOEMS and Miniaturized Systems XIV

9 February 2015 | San Francisco, California, United States

MOEMS and Miniaturized Systems XIII

3 February 2014 | San Francisco, California, United States

Showing 5 of 8 Conference Committees

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