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2 March 2022 Exploring topological optical features due to twisted elliptical birefringent slab
Nirmal K. Viswanathan, Anagha Sreedharan
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Proceedings Volume 12017, Complex Light and Optical Forces XVI; 1201707 (2022) https://doi.org/10.1117/12.2608251
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
We explore phase and polarization singularity characteristics including the formation spiral and saddle pattern around V-singularity, due to propagation of converging-diverging beam of light through a tilted-rotated quartz half-waveplate. Such a system modifies the output beam characteristics significantly via coupled linear-circular birefringence experienced by a beam of light due to shape of the path – wave vector dependent Pancharatnam-Berry type geometric phase. Topological characteristics of the output beam for different input beam and waveplate orientation conditions are characterized using spatially-resolved Stokes parameter and weak measurement methods. Understanding the formation and manipulation of topologically structured optical beam using a single piece of optical component can pave the way to its widespread application.
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Nirmal K. Viswanathan and Anagha Sreedharan "Exploring topological optical features due to twisted elliptical birefringent slab", Proc. SPIE 12017, Complex Light and Optical Forces XVI, 1201707 (2 March 2022); https://doi.org/10.1117/12.2608251
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KEYWORDS
Crystals
Polarization
Birefringence
Crystal optics
Quartz
Optical simulations
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