Dr. Andre J. Van Rynbach Profile

Dr. Andre J. Van Rynbach

at Air Force Research Lab

SPIE Involvement:

Conference Program Committee | Author

Proceedings Article | 13 March 2024 Presentation + Paper

A tunable transmissive Pancharatnam phase device with high optical beam steering efficiency

Brandon Vreeland, Andre Van Rynbach, Philip Bos

Proceedings Volume 12907, 1290709 (2024) https://doi.org/10.1117/12.3014327

KEYWORDS: Liquid crystals, Electrodes, Beam steering, Electric fields, Molecules, Crystal optics, Switching, Polarized light, Optical alignment, Near infrared

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Proceedings Article | 14 June 2023 Presentation

Discussion of theoretical and experimental steering performance limitations of newly designed tunable single-layer LCPG beam-steering device

Brandon Vreeland, Andre Van Rynbach, Philip Bos

Proceedings Volume 12530, 1253005 (2023) https://doi.org/10.1117/12.2678378

KEYWORDS: Beam steering, Electrodes, Liquid crystals, Instrument modeling, Switching, Prototyping, Polarization gratings, Performance modeling, Optics manufacturing, Optical lithography

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Proceedings Article | 12 June 2023 Presentation + Paper

Lidar tomography for remote sensing

Andre Van Rynbach, Sarah Krug, Andrew Reinhardt, Brett Spivey

Proceedings Volume 12537, 1253702 (2023) https://doi.org/10.1117/12.2663164

KEYWORDS: Tomography, LIDAR, Image restoration, Reconstruction algorithms, CT reconstruction, Remote sensing, Image resolution, Convolution, Computed tomography, Point spread functions

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Proceedings Article | 12 June 2023 Presentation + Paper

Risley prisms for broadband optical beam steering

Andre Van Rynbach, Nick Miller, George Harlan, Greg Phillips, Jacob Havran, Doug Moore, Joe Wamsley, Cliff Brust

Proceedings Volume 12537, 125370B (2023) https://doi.org/10.1117/12.2663163

KEYWORDS: Prisms, Beam steering, Design and modelling, Refraction, Silicon, Mid-IR, Germanium, Error analysis, Dispersion, Remote sensing

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Proceedings Article | 3 October 2022 Presentation + Paper

Performance comparison of continuous optical beam steering approaches

Brandon Vreeland, Andre Van Rynbach, Doug Bryant, Philip Bos

Proceedings Volume 12207, 1220707 (2022) https://doi.org/10.1117/12.2633673

KEYWORDS: Liquid crystals, Beam steering, Switching, Electrodes, Adaptive optics, Finite-difference time-domain method, Refraction, Birefringence, Phased array optics, Diffraction

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Proceedings Article | 13 June 2022 Presentation

Towards a deep-learning aided point cloud labeling suite

Theus Aspiras, Vijayan Asari, Nina Singer, Jonathan Schierl, Andy Stokes, Brett Keaffaber, Andre Van Rynbach, Kevin Decker, David Rabb

Proceedings Volume PC12101, PC121010A (2022) https://doi.org/10.1117/12.2622313

KEYWORDS: Clouds, Convolution, LIDAR

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Proceedings Article | 3 June 2022 Presentation + Paper

Gray Spectralon polarized reflectance deviations from Lambertian

Nathaniel Field, Jarrod Brown, Darrel Card, Chad Welsh, Andre Van Rynbach, Joseph Shaw

Proceedings Volume 12112, 121120A (2022) https://doi.org/10.1117/12.2618868

KEYWORDS: Reflectivity, Bidirectional reflectance transmission function, LIDAR, Polarimetry, Polarization, Wave plates

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Proceedings Article | 30 May 2022 Presentation

High steering resolution design of pancharatnam phase based optical laser beam steering device

Brandon Vreeland, Andre Rynbach, Philip Bos

Proceedings Volume PC12092, PC120920O (2022) https://doi.org/10.1117/12.2633937

KEYWORDS: Laser optics, Electrodes, Beam steering, Switching, Liquid crystals

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Proceedings Article | 27 May 2022 Presentation + Paper

Switchable metasurfaces from phase change materials designed with machine learning

Joshua Burrow, Andre Van Rynbach, Piyush Shah, Jonathan Thompson, Jonathan Slagle, Matthew Mills, Ray Secondo, Mulaine Shih, John Demis, Ning Cao, Eric Harper, Imad Agha

Proceedings Volume 12103, 121030A (2022) https://doi.org/10.1117/12.2618630

KEYWORDS: Mirrors, Semiconducting wafers, Deep ultraviolet, Transmittance, Crystals, Photoresist materials, Lithography, Fabrication, Machine learning, FT-IR spectroscopy

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Proceedings Article | 27 May 2022 Presentation + Paper

An automatic multimodal data registration strategy for 2D/3D information fusion

Jonathan Schierl, Vijayan Asari, Nina Singer, Theus Aspiras, Andrew Stokes, Brett Keaffaber, Andre Van Rynbach, Kevin Decker, David Rabb

Proceedings Volume 12100, 1210004 (2022) https://doi.org/10.1117/12.2618564

KEYWORDS: Clouds, Feature extraction, Data modeling, 3D modeling, 3D image processing, Image fusion, Data fusion, Sensors, LIDAR, Image registration

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Proceedings Article | 27 May 2022 Presentation + Paper

Automated point cloud completion for occlusion reduction in aerial Lidar

Nina Singer, Vijayan Asari, Theus Aspiras, Jonathan Schierl, Andrew Stokes, Brett Keaffaber, Andre Van Rynbach, Kevin Decker, David Rabb

Proceedings Volume 12099, 1209906 (2022) https://doi.org/10.1117/12.2618316

KEYWORDS: Clouds, Neurons, LIDAR, Computer programming, Visualization, Sensors, Neural networks, Feature extraction, Defense and security, Statistical modeling

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Proceedings Article | 2 September 2021 Presentation + Paper

Single layer, tunable, liquid crystal based Pancharatnam phase devices

Brandon Vreeland, Comrun Yousefzadeh, Andre VanRynbach, Douglas Bryant, Philip Bos

Proceedings Volume 11807, 118070M (2021) https://doi.org/10.1117/12.2596462

KEYWORDS: Liquid crystals, Beam steering

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Proceedings Article | 12 April 2021 Presentation

2-μm 5-kHz PM DFB-FBG fiber seed laser in ns pulsed Tm-doped fiber amplifier

Wiktor Walasik, Robert Tench, Alexandre Amavigan, Jean-Marc Delavaux, Andre Van Rynbah

Proceedings Volume 11739, 1173909 (2021) https://doi.org/10.1117/12.2585926

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Proceedings Article | 5 March 2021 Presentation + Paper

Efficiency optimization of a tunable non-mechanical beam steering device based on fringe field switching and Pancharatnam phase

Comrun Yousefzadeh, Andre Van Rynbach, Philip Bos

Proceedings Volume 11707, 117070D (2021) https://doi.org/10.1117/12.2582861

KEYWORDS: Beam steering, Liquid crystals, Electro optics, Control systems, Unmanned vehicles, Switching, Optimization (mathematics), Optical simulations, Laser communications, LIDAR

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