Dr. Terry J. Brennan Profile

Dr. Terry J. Brennan

Senior Scientist at Prime Plexus LLC

SPIE Involvement:

Author

Publications (18)

Proceedings Article | 28 August 2024 Poster

Laser guide star enhanced extreme adaptive optics

Jeff Richey, Lauren Schatz, Terry Brennan, Robert Johnson

Proceedings Volume 13097, 1309766 (2024) https://doi.org/10.1117/12.3016170

KEYWORDS: Adaptive optics, Laser guide stars, Design and modelling, Stars, Wavefronts, Wavefront sensors, Optical simulations, Laser scattering, Wavefront errors, Wavefront aberrations

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SPIE Journal Paper | 13 April 2022 Open Access

Wave-optics investigation of branch-point density

Jeffrey Beck, Jeremy Bos, Terry Brennan, Mark Spencer

OE, Vol. 61, Issue 04, 044104, (April 2022) https://doi.org/10.1117/12.10.1117/1.OE.61.4.044104

KEYWORDS: Monte Carlo methods, Turbulence, Optical engineering, Wave propagation, Scintillation, Spiral phase plates, Reconstruction algorithms, Atmospheric propagation engineering, Computer simulations, Adaptive optics

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Proceedings Article | 13 December 2020 Presentation

A test bed to compare the performance of different wavefront sensory

Mala Mateen, Colton Bigler, Robert Johnson, Michael Oliker, Terry Brennan, Michael Hart, Johanan Codona

Proceedings Volume 11448, 114481A (2020) https://doi.org/10.1117/12.2576384

KEYWORDS: Wavefront sensors, Wavefronts, Sensors, Adaptive optics, Telescopes, Spatial resolution, Spatial frequencies, Reconstruction algorithms, Optical design

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Proceedings Article | 18 September 2018 Presentation + Paper

Investigation of branch-point density using traditional wave-optics techniques

Jeffrey Beck, Mark Spencer, Jeremy Bos, Terry Brennan

Proceedings Volume 10772, 1077206 (2018) https://doi.org/10.1117/12.2319871

KEYWORDS: Turbulence, Atmospheric propagation, Wave propagation, Beam propagation method, Gaussian beams, Adaptive optics, Monte Carlo methods, Wavefront sensors, Scintillation

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Proceedings Article | 18 September 2018 Presentation + Paper

Polychromatic speckle mitigation for improved adaptive-optics system performance

Noah Van Zandt, Mark Spencer, Terry Brennan

Proceedings Volume 10772, 107720R (2018) https://doi.org/10.1117/12.2318954

KEYWORDS: Speckle, Adaptive optics, Turbulence, Wavefronts, Wavefront sensors, Light wave propagation, Speckle pattern, Temporal coherence

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Proceedings Article | 18 September 2018 Presentation + Paper

Wave-optics simulation of correlated speckle fields for use in closed-loop-phase-compensation studies

Derek Burrell, Noah Van Zandt, Mark Spencer, Terry Brennan

Proceedings Volume 10772, 1077207 (2018) https://doi.org/10.1117/12.2319868

KEYWORDS: Speckle, Computer simulations, Scattering, Speckle pattern, Reflection, Fourier transforms, Wave propagation, Monte Carlo methods, Visualization

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Proceedings Article | 6 September 2017 Presentation + Paper

Impact of beacon wavelength on phase-compensation performance

Allison Enterline, Mark Spencer, Derek Burrell, Terry Brennan

Proceedings Volume 10410, 1041002 (2017) https://doi.org/10.1117/12.2270495

KEYWORDS: Atmospheric turbulence, Atmospheric propagation, Computer simulations, Beam propagation method, Adaptive optics, Wave propagation, Monte Carlo methods, Wavefront sensors, Light wave propagation, Actuators

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Proceedings Article | 30 August 2017 Presentation + Paper

Shack-Hartmann measurements of the transverse linear and orbital angular momenta after propagation through turbulence

Mikhail Charnotskii, Terry Brennan

Proceedings Volume 10408, 104080L (2017) https://doi.org/10.1117/12.2275703

KEYWORDS: Sensors

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Proceedings Article | 18 May 2017 Presentation + Paper

Compensation in the presence of deep turbulence using tiled-aperture architectures

Mark Spencer, Terry Brennan

Proceedings Volume 10194, 1019403 (2017) https://doi.org/10.1117/12.2258681

KEYWORDS: Turbulence, Phased arrays, Phase compensation, Wave propagation, Reconstruction algorithms, Optical simulations, Computer architecture, Phased array optics, Deformable mirrors, Atmospheric sensing, Laser applications, Beam controllers

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SPIE Journal Paper | 7 March 2013 Open Access

Statistical analysis of Airborne Aero-Optical Laboratory optical wavefront measurements

Terry Brennan, Donald Wittich

OE, Vol. 52, Issue 07, 071416, (March 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.7.071416

KEYWORDS: Statistical analysis, Turbulence, Wavefronts, Sensors, Error analysis, Optical testing, Atmospheric turbulence, Wavefront sensors, Optical engineering, Cameras

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Proceedings Article | 15 October 2012 Paper

Understanding the physics of optical deep turbulence at the Earth's boundary layer

Thomas Farrell, Darryl Sanchez, Julie Smith, Jason Holzman, Patrick Kelly, Terry Brennan, Anita Gallegos, Denis Oesch, Demos Kyrazis

Proceedings Volume 8520, 85200H (2012) https://doi.org/10.1117/12.931432

KEYWORDS: Atmospheric modeling, Turbulence, Heat flux, Kinematics, Solar radiation models, Optical turbulence, Physics, Solar energy, Clouds, Mathematical modeling

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Proceedings Article | 12 August 2010 Paper

Estimation of optical turbulence characteristics from Shack Hartmann wavefront sensor measurements

Terry Brennan, David Mann

Proceedings Volume 7816, 781602 (2010) https://doi.org/10.1117/12.862808

KEYWORDS: Turbulence, Sensors, Error analysis, Wavefront sensors, Statistical analysis, Optical turbulence, Atmospheric propagation, Modulation transfer functions, Motion estimation, Atmospheric optics

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Proceedings Article | 7 September 2006 Paper

Performance of a woofer-tweeter deformable mirror control architecture for high-bandwidth high-spatial resolution adaptive optics

Terry Brennan, Troy Rhoadarmer

Proceedings Volume 6306, 63060B (2006) https://doi.org/10.1117/12.682482

KEYWORDS: Deformable mirrors, Turbulence, Actuators, Adaptive optics, Control systems, Wavefront sensors, Mirrors, Device simulation, Cameras, Servomechanisms

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Proceedings Article | 21 August 2003 Paper

Anatomy of the slope discrepancy structure function: characterization of turbulence

Terry Brennan

Proceedings Volume 5087, (2003) https://doi.org/10.1117/12.487749

KEYWORDS: Turbulence, Error analysis, Wavefront sensors, Sensors, Optical simulations, Statistical analysis, Calibration, Servomechanisms, Spatial frequencies, Deformable mirrors

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Proceedings Article | 7 February 2003 Paper

Performance of wavefront sensors in strong scintillation

Jeffrey Barchers, David Fried, Donald Link, Glenn Tyler, William Moretti, Terry Brennan, Robert Fugate

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.457126

KEYWORDS: Sensors, Wavefront sensors, Scintillation, Shearing interferometers, Point diffraction interferometers, Turbulence, Reconstruction algorithms, Phase shifting, Phase measurement, Wave propagation

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Proceedings Article | 4 September 2001 Paper

Stability margin loss due to wavefront sensor misregistration: amelioration with spatial filtering techniques

Terry Brennan

Proceedings Volume 4376, (2001) https://doi.org/10.1117/12.438179

KEYWORDS: Actuators, Servomechanisms, Sensors, Systems modeling, Spatial frequencies, Adaptive optics, Mirrors, Deformable mirrors, Control systems, Wavefront sensors

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Proceedings Article | 3 August 1999 Paper

ABL beam control laboratory demonstrator

Kenneth Billman, John Breakwell, Richard Holmes, Kalyan Dutta, Zachary Granger, Terry Brennan, Bryan Kelchner

Proceedings Volume 3706, (1999) https://doi.org/10.1117/12.356954

KEYWORDS: Turbulence, Optical simulations, Control systems, Fiber optic illuminators, Atmospheric optics, Atmospheric propagation, Beam controllers, Atmospheric modeling, Missiles, Laser beam propagation

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Proceedings Article | 6 August 1997 Paper

The Differential Phase Experiment: experimental concept, design analysis, and data reduction analysis

Glenn Tyler, Terry Brennan, Stephen Browne, Robert Dueck, Michael Lodin, Phillip Roberts, Jeffrey Vaughn

Proceedings Volume 3065, (1997) https://doi.org/10.1117/12.281028

KEYWORDS: Polarization, Calibration, Phase measurement, Turbulence, Phase shifts, Optical simulations, Beam splitters, Atmospheric propagation, Receivers, Statistical analysis

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Showing 5 of 18 publications

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