Dr. Sawyer D. Campbell Profile

Dr. Sawyer D. Campbell

Associate Research Professor at The Pennsylvania State Univ

SPIE Involvement:

Author

Area of Expertise:

Plasmonics , Electromagnetics , Optical design , Metamaterials , Gradient-index optics , Deep Learning

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Company Website

Sawyer Campbell was born in Normal, IL. He received the B.S. degree in physics from Illinois Wesleyan University, Bloomington, IL, in 2008, the M.S. and PhD degrees in optical sciences from the University of Arizona, Tucson, in 2010 and 2013, respectively. He is an Associate Research Professor in the Department of Electrical Engineering at The Pennsylvania State University and Associate Director of the Computational Electromagnetics and Antennas Research Laboratory (CEARL). Dr. Campbell has extensive experience in the computational modeling and inverse design of metamaterial- and transformation optics-based devices at RF, infrared, and optical frequencies. Additionally, he is an expert in the application of multi-objective and surrogate-assisted optimization techniques to challenging problems in both the RF and optical regimes. He is the author of more than 150 technical and proceedings articles and 5 book chapters. He is a senior member of SPIE, OPTICA, and IEEE, and a life member of ACES.

SPIE Journal Paper | 7 February 2023 Open Access

Special Section Guest Editorial: Advances in Computational Methods for Optical System Forward- and Inverse-Design

Sawyer Campbell, Matthew E. Jungwirth

OE, Vol. 62, Issue 02, 021001, (February 2023) https://doi.org/10.1117/12.10.1117/1.OE.62.2.021001

KEYWORDS: Visible light communication, Optical engineering, Evolutionary algorithms, Design and modelling, Deep learning, Phase modulation, Optical design, Artificial intelligence, Algorithm development, Visualization

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SPIE Journal Paper | 24 January 2023

Sequential differential ray tracing formulation for homogeneous and gradient-index lenses using automatic differentiation

Manushanker Balasubramanian, Sawyer D. Campbell, Douglas H. Werner

OE, Vol. 62, Issue 02, 021009, (January 2023) https://doi.org/10.1117/12.10.1117/1.OE.62.2.021009

KEYWORDS: Ray tracing, GRIN lenses, Optical engineering, Inhomogeneities, Spherical lenses, Design and modelling, Refractive index, Optical surfaces, Geometrical optics, Matrices

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Proceedings Article | 3 October 2022 Presentation + Paper

Light-switchable quasi-BIC optical vortex generators

Yuhao Wu, Lei Kang, Sawyer Campbell, Pingjuan Werner, Douglas Werner

Proceedings Volume 12196, 1219609 (2022) https://doi.org/10.1117/12.2632656

KEYWORDS: Spiral phase plates, Optical vortices, Silicon, Modulation, Nonlinear dynamics, Ultrafast phenomena, Transient nonlinear optics, Polarization, Amorphous silicon, Ultrafast lasers

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Proceedings Article | 3 October 2022 Presentation + Paper

A toolkit for multiscale optical system inverse-design

Sawyer Campbell, Ronald Jenkins, Benjamin Zerbe, Eric Whiting, Manushanker Balasubramanian, Arkaprovo Das, Jacob Young, Douglas Werner, Pingjuan Werner

Proceedings Volume 12217, 122170C (2022) https://doi.org/10.1117/12.2633581

KEYWORDS: Optical design, Systems modeling, Optical components, GRIN lenses, Chemical elements, Algorithm development, Optimization (mathematics), Nanofabrication, Human-machine interfaces, Gradient-index optics

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Proceedings Article | 1 August 2021 Presentation + Paper

Discovering metasurface robustness through deep learning

Ronald Jenkins, Sawyer Campbell, Douglas Werner, Pingjuan Werner

Proceedings Volume 11795, 1179509 (2021) https://doi.org/10.1117/12.2593465

KEYWORDS: Tolerancing, Nanophotonics, Neural networks, Electron beam lithography, Diffraction, Optimization (mathematics), Nanofabrication, Electromagnetism, Electrical engineering, Data modeling

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Proceedings Article | 18 April 2021 Presentation + Paper

Inverse design of broadband and reconfigurable meta-optics

S. Campbell, D. Werner, P. Werner

Proceedings Volume 11769, 117690N (2021) https://doi.org/10.1117/12.2589333

KEYWORDS: Zoom lenses, Optimization (mathematics), Optical design, Optical components, Lenses, Electro-optical engineering, Analytical research

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Proceedings Article | 3 May 2020 Presentation

High-performance reconfigurable meta-optics based on optical phase change materials (Rising Researcher) (Conference Presentation)

Tian Gu, Mikhail Shalaginov, Sensong An, Sawyer Campbell, Yifei Zhang, Carlos Ríos, Lei Kang, Myungkoo Kang, Claudia Gonçalves, Clara Rivero-Baleine, Kathleen Richardson, Douglas Werner, Hualiang Zhang, Juejun Hu

Proceedings Volume 11389, 113890O (2020) https://doi.org/10.1117/12.2557439

KEYWORDS: Imaging systems, Optical properties, Photonic devices, Optical switching, Transparency, Glasses, Switching, Transition metals, Solid state physics

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Proceedings Article | 5 September 2019 Presentation + Paper

Metasurface synthesis through multi-objective optimization aided inverse-design

Sawyer Campbell, Eric Whiting, Douglas Werner, Pingjuan Werner

Proceedings Volume 11080, 110802F (2019) https://doi.org/10.1117/12.2529823

KEYWORDS: Metamaterials, Optimization (mathematics), Nanoantennas, Electromagnetism, Infrared technology, Polarization

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Proceedings Article | 19 September 2018 Presentation + Paper

Advanced multi-objective and surrogate-assisted optimization of topologically diverse metasurface architectures

Sawyer Campbell, Danny Zhu, Eric Whiting, Jogender Nagar, Douglas Werner, Pingjuan Werner

Proceedings Volume 10719, 107190U (2018) https://doi.org/10.1117/12.2321159

KEYWORDS: Metamaterials, Optical design, Optimization (mathematics), Tolerancing, Gradient-index optics, GRIN lenses, Algorithm development, Electromagnetism, Lenses, Refraction

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Proceedings Article | 17 September 2018 Presentation

Multiscale design of optical metafilms with bianisotropic homogenization (Conference Presentation)

Alexander Kildishev, Zhaxylyk Kudyshev, Ludmila Prokopeva, Derek Olson, William Henshaw, Sawyer Campbell, Douglas Werner

Proceedings Volume 10719, 1071918 (2018) https://doi.org/10.1117/12.2320065

KEYWORDS: Homogenization, Optical design, Optimization (mathematics), Photonics systems, Linear algebra, Polarization, Dispersion, Nonlinear optics, Quantum computing

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Proceedings Article | 24 August 2017 Paper

Electrically driven hybrid photonic metamaterials for multifunctional control

Lei Kang, Liu Liu, Sawyer Campbell, Taiwei Yue, Qiang Ren, Theresa Mayer, Douglas Werner

Proceedings Volume 10345, 103451G (2017) https://doi.org/10.1117/12.2273218

KEYWORDS: Metamaterials, Photonic metamaterials, Vanadium, Camouflage, Light-matter interactions, Dielectrics, Active optics, Magnetism, Refractive index

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The unique light-matter interaction in metamaterials, a type of artificial medium in which the geometrical features of subunits dominate their optical responses, have been utilized to achieve exotic material properties that are rare or nonexistent in natural materials. Furthermore, to extend their behaviors, active materials have been introduced into metamaterial systems to advance tunability, switchability and nonlinearity. Nevertheless, practical examples of versatile photonic metamaterials remain exceedingly rare for two main reasons. On the one hand, in sharp contrast to the broad material options available at lower frequencies, it is less common to find active media in the optical regime that can provide pronounced dielectric property changes under external stimuli, such as electric and magnetic fields. Vanadium dioxide (VO₂), offering a large refractive index variation over a broad frequency range due to its near room temperature insulator-to-metal transition (IMT), has been favored in recent studies on tunable metamaterials. On the other hand, it turns out that regulating responses of hybrid metamaterials to external forces in an integrated manner is not a straightforward task. Recently, metamaterial-enabled devices (i.e., metadevices) with ‘self-sufficient’ or ‘self-contained’ electrical and optical properties have enabled complex functionalities. Here, we present a design methodology along with the associated experimental validation of a VO₂ thin film integrated optical metamaterial absorber as a hybrid photonic platform for electrically driven multifunctional control, including reflectance switching, a rewritable memory process and manageable localized camouflage. The nanoengineered topologically continuous metal structure simultaneously supports the optical resonance and electrical functionality that actuates the phase transition in VO₂ through the process of Joule heating. This work provides a universal approach to creating self-sufficient and highly-versatile nanophotonic systems.

Proceedings Article | 27 September 2016 Presentation + Paper

Advancements in multi-objective and surrogate-assisted GRIN lens design and optimization

Sawyer Campbell, Jogender Nagar, John Easum, Donovan Brocker, Douglas Werner, Pingjuan Werner

Proceedings Volume 9948, 994807 (2016) https://doi.org/10.1117/12.2237044

KEYWORDS: GRIN lenses, Gradient-index optics, Lens design, Optics manufacturing, Optimization (mathematics), Wavefronts, Monochromatic aberrations, Ray tracing, Optical design, Spherical lenses

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Proceedings Article | 17 May 2016 Paper

Advanced gradient-index lens design tools to maximize system performance and reduce SWaP

Sawyer Campbell, Jogender Nagar, Donovan Brocker, John Easum, Jeremiah Turpin, Douglas Werner

Proceedings Volume 9822, 98220P (2016) https://doi.org/10.1117/12.2223040

KEYWORDS: GRIN lenses, Lens design, Gradient-index optics, Spherical lenses, Optimization (mathematics), Wavefronts, Objectives, Lenses, 3D modeling, Ray tracing

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Proceedings Article | 3 September 2015 Paper

Advancements in transformation optics-enabled gradient-index lens design

Sawyer Campbell, Donovan Brocker, Jogender Nagar, John Easum, Douglas Werner, Pingjuan Werner

Proceedings Volume 9579, 95790E (2015) https://doi.org/10.1117/12.2187513

KEYWORDS: GRIN lenses, Lens design, Gradient-index optics, Objectives, Chromatic aberrations, Optimization (mathematics), Aspheric lenses, Optical design, Refractive index, Colorimetry

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