Dr. Troy A. Rhoadarmer Profile

Dr. Troy A. Rhoadarmer

President & Principal Scientist

SPIE Involvement:

Author

Publications (31)

Proceedings Article | 20 August 2020 Presentation + Paper

Parallelization of digital holographic wavefront sensing

Thomas Cabell-Kluch, Troy Rhoadarmer, Steve Gibson, Jeannine Knight

Proceedings Volume 11508, 115080I (2020) https://doi.org/10.1117/12.2568809

KEYWORDS: Digital holography, Wavefront sensors, Wavefronts, Holography, Phase measurement, Digital imaging, Fourier transforms

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Proceedings Article | 18 September 2018 Presentation + Paper

Distributed-volume optical disturbance generation in a scaled-laboratory environment using nematic liquid-crystal phase modulators

David Dayton, Mark Spencer, Arthur Hassall, Troy Rhoadarmer

Proceedings Volume 10772, 107720H (2018) https://doi.org/10.1117/12.2319968

KEYWORDS: Turbulence, Sensors, Atmospheric propagation, Atmospheric optics, Digital holography, Liquid crystals, Wave propagation, Spiral phase plates, Computer simulations, Adaptive optics

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Proceedings Article | 26 August 2008 Paper

Adaptive optics with the deformable mirror not in pupil: Part I. Experimental results

Mala Mateen, Darryl Sanchez, Troy Rhoadarmer, Loretta Arguella, Denis Oesch, Deborah Fung, Roger Petty, Patrick Kelly, R. Anthony Vincent, Jeff Richey

Proceedings Volume 7093, 70930A (2008) https://doi.org/10.1117/12.794845

KEYWORDS: Adaptive optics, Wavefronts, Deformable mirrors, Point spread functions, Telescopes, Mirrors, Optical design, Atmospheric sciences, Diffraction, Turbulence

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Proceedings Article | 25 September 2006 Paper

Closed-loop control techniques for an adaptive-optical system with an interferometric wavefront sensor

Laura Klein, Troy Rhoadarmer

Proceedings Volume 6306, 63060F (2006) https://doi.org/10.1117/12.682481

KEYWORDS: Control systems, Turbulence, Adaptive optics, Wavefront sensors, Wavefronts, Scintillation, Process control, Linear filtering, Actuators, Interferometry

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Proceedings Article | 7 September 2006 Paper

Design of a spatially phase shifted self-referencing interferometer wave front sensor

Troy Rhoadarmer, Laura Klein

Proceedings Volume 6306, 63060K (2006) https://doi.org/10.1117/12.682479

KEYWORDS: Phase shifts, Phase shifting, Cameras, Wavefronts, Sensors, Adaptive optics, Beam splitters, Prototyping, Turbulence, Wavefront sensors

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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 | 30 August 2006 Paper

Intensity redistribution for multiconjugate adaptive optics

Troy Rhoadarmer, Charles Beckner, Laura Klein

Proceedings Volume 6306, 630608 (2006) https://doi.org/10.1117/12.682478

KEYWORDS: Control systems, Adaptive optics, Atmospheric propagation, Beam shaping, Wavefronts, Analytical research, Wavefront sensors, Wave propagation, Scintillation, Detection and tracking algorithms

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Proceedings Article | 29 August 2006 Paper

Adaptive control and filtering for closed-loop adaptive-optical wavefront reconstruction

Troy Rhoadarmer, Laura Klein, Steve Gibson, Neil Chen, Yu-Tai Liu

Proceedings Volume 6306, 63060E (2006) https://doi.org/10.1117/12.682476

KEYWORDS: Adaptive optics, Adaptive control, Digital filtering, Wavefronts, Actuators, Optical filters, Cameras, Turbulence, Atmospheric optics, Control systems

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Proceedings Article | 30 August 2005 Paper

Evaluation of phase-shifting techniques for a self-referencing interferometer wavefront sensor

Melissa Corley, Troy Rhoadarmer

Proceedings Volume 5894, 58940R (2005) https://doi.org/10.1117/12.619448

KEYWORDS: Phase shifts, Phase shifting, Turbulence, Calibration, Wavefronts, Cameras, Sensors, Control systems, Wavefront sensors, Actuators

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Proceedings Article | 18 August 2005 Paper

Performance measurements of a self-referencing interferometer wavefront sensor with optical amplification

Laura Klein, Troy Rhoadarmer

Proceedings Volume 5894, 58940Q (2005) https://doi.org/10.1117/12.619451

KEYWORDS: Optical amplifiers, Signal to noise ratio, Cameras, Adaptive optics, Wavefront sensors, Scintillation, Optical filters, Interference (communication), Amplifiers, Fiber amplifiers

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Proceedings Article | 12 October 2004 Paper

Simple laboratory system for generating well-controlled atmospheric-like turbulence

Samuel Mantravadi, Troy Rhoadarmer, Robert Glas

Proceedings Volume 5553, (2004) https://doi.org/10.1117/12.559933

KEYWORDS: Turbulence, Adaptive optics, Atmospheric optics, Atmospheric modeling, Atmospheric turbulence, Spatial light modulators, Phase measurement, Control systems, Lenses, Wavefronts

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Proceedings Article | 12 October 2004 Paper

Development of a self-referencing interferometer wavefront sensor

Troy Rhoadarmer

Proceedings Volume 5553, (2004) https://doi.org/10.1117/12.559916

KEYWORDS: Adaptive optics, Optical amplifiers, Cameras, Wavefront sensors, Wavefronts, Scintillation, Phase shifts, Phase shifting, Sensors, Turbulence

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Proceedings Article | 6 November 2002 Paper

Noise analysis for complex field estimation using a self-referencing interferometer wavefront sensor

Troy Rhoadarmer, Jeffrey Barchers

Proceedings Volume 4825, (2002) https://doi.org/10.1117/12.450472

KEYWORDS: Optical amplifiers, Signal to noise ratio, Wavefronts, Cameras, Phase shifting, Phase shifts, Beam splitters, Quantum efficiency, Interference (communication), Wavefront sensors

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Proceedings Article | 25 June 2002 Paper

Wave front reconstruction using a second-order model for Shack-Hartmann wavefront sensor measurements

Troy Rhoadarmer

Proceedings Volume 4724, (2002) https://doi.org/10.1117/12.472370

KEYWORDS: Reconstruction algorithms, Wavefronts, Scintillation, Wavefront sensors, Adaptive optics, Phase measurement, Computer simulations, Turbulence, Error analysis, Atmospheric optics

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Proceedings Article | 4 February 2002 Paper

Complex field reconstruction using gradient and intensity measurements from a Shack-Hartmann wave front sensor

Troy Rhoadarmer, Jeffrey Barchers, Earl Spillar

Proceedings Volume 4494, (2002) https://doi.org/10.1117/12.454796

KEYWORDS: Reconstruction algorithms, Wavefronts, Scintillation, Adaptive optics, Wavefront sensors, Performance modeling, Algorithm development, Computer simulations, Atmospheric modeling, Atmospheric optics

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Proceedings Article | 4 February 2002 Paper

Identification of the registration of a deformable mirror to a Schack Hartmann wavefront sensor in an adaptive optical system

Jeffrey Barchers, Troy Rhoadarmer, David Lee

Proceedings Volume 4494, (2002) https://doi.org/10.1117/12.454792

KEYWORDS: Actuators, Deformable mirrors, Wavefront sensors, Image registration, Error analysis, Optical alignment, Signal to noise ratio, Sensors, Adaptive optics, Atmospheric turbulence

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Proceedings Article | 7 July 2000 Paper

Measurement of atmospheric turbulence with a Shack-Hartmann wavefront sensor at the new MMT's prime focus

Patrick McGuire, Maud Langlois, Michael Lloyd-Hart, Troy Rhoadarmer, James Roger Angel

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390366

KEYWORDS: Monochromatic aberrations, Mirrors, Cameras, Wavefront sensors, Telescopes, Atmospheric turbulence, Turbulence, Wavefronts, Data acquisition, Actuators

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Proceedings Article | 7 July 2000 Paper

Linear zonal atmospheric prediction for adaptive optics

Patrick McGuire, Troy Rhoadarmer, Hanna Coy, James Roger Angel, Michael Lloyd-Hart

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390346

KEYWORDS: Adaptive optics, Wavefronts, Atmospheric optics, Neural networks, Wavefront sensors, Atmospheric turbulence, Telescopes, Algorithms, Atmospheric propagation, Error analysis

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Proceedings Article | 27 September 1999 Paper

Laboratory adaptive optics system for testing the wavefront sensor for the new MMT

Troy Rhoadarmer, Patrick McGuire, John Hughes, Michael Lloyd-Hart, James Roger Angel, Skip Schaller, Matthew Kenworthy

Proceedings Volume 3762, (1999) https://doi.org/10.1117/12.363571

KEYWORDS: Actuators, Adaptive optics, Mirrors, Wavefronts, Turbulence, Point spread functions, Lenses, Imaging systems, Optical transfer functions, Wavefront sensors

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Proceedings Article | 27 September 1999 Paper

Construction and testing of the wavefront sensor camera for the new MMT adaptive optics system

Patrick McGuire, Troy Rhoadarmer, Michael Lloyd-Hart, J. Shelton, Michael Lesser, James Roger Angel, George Angeli, John Hughes, Bruce Fitz-Patrick, Matthew Rademacher, Skip Schaller, Matthew Kenworthy, Francois Wildi, Jeff Capara, David Ouellette

Proceedings Volume 3762, (1999) https://doi.org/10.1117/12.363583

KEYWORDS: Charge-coupled devices, Adaptive optics, Wavefronts, Cameras, Wavefront sensors, Sensors, Electrons, Mirrors, Turbulence, Epoxies

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