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Spin Orbit Photonics Using Plasmonic Metamaterials

Hosted By: Polarization Management and Propagation Technical Group

29 April 2024 9:00 - 10:00

Eastern Daylight/Summer Time (US & Canada) (UTC -04:00)

Spin (SAM) and orbital angular momentum (OAM) of photons are usually ascribed to the quantum nature of light. However, classical light beams can also carry both SAM and OAM, which are associated with circular / elliptical polarization and phase vortex, respectively. Thus, the evolution of polarized light beam in curved trajectory mimics the spin orbit interaction (SOI) effects of a massless spin 1 particle (photon).

In this webinar hosted by the Polarization Management and Propagation Technical Group, Prof. Nirmalya Ghosh will discuss recently observed intriguing SOI effects of classical light beam, like spin and orbital Hall effect, photonic spin-momentum locking in plasmonic metamaterials etc. In this context, Prof. Ghosh will also discuss the realization of quantum weak measurements using classical polarized light, which he has employed to amplify the weak SOI effects. The prospect of developing next-generation spin-orbit photonic meta devices will be highlighted.

What You Will Learn:
• Spin Orbit Photonics
• Orbital angular momentum (OAM)
• Spin orbit interaction (SOI)
• Photonic spin-momentum locking in plasmonic metamaterials

Who Should Attend:
• PhD Student
• Faculty
• Industry from relevant background

About the Presenter: Nirmalya Ghosh from IISER Kolkata

Fellow of the Indian Academy of Sciences, Professor Nirmalya Ghosh joined the Department of Physical Sciences and Centre of Excellence in Space Sciences India (CESSI), IISER, in Kolkata, in 2010, where he established the bio-optics & Nano-photonics (bioNap) research laboratory. 

His work has impacted multiple areas of optical sciences from quantum, space, and biomedical optics, to material sciences and fluorescence spectroscopy. Among his many achievements, Professor Ghosh was awarded a G. G. Stokes Award in 2021 for his contributions in the field of optical polarization including the development of a comprehensive turbid medium polarimetry platform, extending Mueller matrix formalism to fluorescence spectroscopy and demonstrating its potential as a novel tool for characterization of nano-and bio-materials, for the development of new concepts of weak measurement in classical optics, his contributions to the field of nano optics and his research on spin orbit interactions of light.  

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