Henri Poincaré Webinar Series, Optical Polarization and Related Phenomena: a monthly webinar series on SPIE.Online

Monthly webinars about polarization drive discussion and new research opportunities

Each month, experts from across different disciplines and technology application areas present new discoveries and advances in optical polarization and related topics. With a commitment to extensive Q & A sessions, this series has a particular focus on engendering new collaborations and research opportunities for scientists in relevant fields. Read more about the chairs and volunteers behind this webinar series—a group dedicated to optical polarization and related phenomenon

Snapshot full Stokes imager by microgrid polarization cameras and its application for industry and bio-imaging

Presenter: Yukitoshi Otani
Director of Center for Optical Research and Education
Utsunomiya University (Japan)

Monday, 24 January 2022, 8:00 PM PT
Tuesday, 25 January 2022, 13:00 Japan
Tuesday, 25 January 2022, 4:00 UTC

Abstract: This paper describes a snapshot full- Stokes imager by two microgrid polarization cameras with linear micro-polarizer array which is aligned to 0, 45, 90 and 135° of azimuthal direction. A  presentation highlights an imager for full Stokes parameters with achromatic retarder, achromatic non-polarizing beam splitter and two polarization cameras with calibration method for error of  retarder. We demonstrate same applications of bio-imaging using a differential interferometric microscope, microplastics and some industrial applications by high-speed polarization cameras with 1 million per seconds.

3D Mueller Matrix Reconstruction of the Optical Anisotropy Parameters of Biological Tissues and Fluids

Presenter: Yuriy Ushenko
Chernivtsi National University, Ukraine
22 February 2022 | 5:00 AM PT (1300 UTC)

Abstract: 2D polarization methods may be useful for imaging and characterizing surfaces or materials which are isotropic in at least one direction, they are of limited use for more complex systems. It is generally desirable to understand variations across a structure fully in three dimensions. Most biological objects are partially depolarizing. The theoretical basis of this direction can be established from the synthesis of methods of differential Mueller matrix and holographic mapping of phase-inhomogeneous layers. Here, we develop and experimentally demonstrate a technique for the 3D Mueller matrix reconstruction of the phase and amplitude anisotropy parameters of biological tissues and fluids.

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Chairs and facilitators

Thomas A. Germer

Physicist in the Surface and Interface Metrology Group, Sensor Science Division, at the National Institute of Standards and Technology (NIST)

Tatiana Novikova

École Polytechnique

Jessica C. Ramella-Roman

Florida International University

Dedicated to optical polarization and related phenomenon

Thomas A. Germer, a physicist in the Surface and Interface Metrology Group, Sensor Science Division, at the National Institute of Standards and Technology (NIST), leads this interdisciplinary series that brings together speakers from across the globe to explore topics derived from Henri Poincaré's work on optical polarization. The interactive investigations demonstrate contemporary applications of polarization techniques in various research areas and how they relate to each other, and are extended, for example, to non-paraxial optics.

"The reason I chose polarization science for this SPIE-hosted webinar series, is that this topic extends across nearly all of photonics," notes Germer. "Optical radiation is a vector field! And while there are conferences scattered around the world specifically related to certain aspects of polarization, they are often tied to specific applications whether those might be materials science, remote sensing, biomedical optics, or astronomy. One of the hopes for this series is that it will allow for energetic and lively discussions. In the end, I really hope to bring the global polarization-focused community together." 

Webinar facilitators are Germer, Jessica C. Ramella-Roman of Florida International University, and the École Polytechnique's Tatiana Novikova. The program is supported by an international committee of volunteer leaders: Oriol Arteaga, University of Barcelona (Spain); Sophie Brasselet, Institut Fresnel (France); Nirmalya Ghosh, Indian Institute of Science Education and Research Kolkata (India); Igor V. Meglinski, Aston University (United Kingdom); Valery V. Tuchin, Saratov State University (Russian Federation); and Scott Tyo, University of New South Wales (Australia).

Watch previous webinars