Nonlinear optical and multiphoton processes for in situ manipulation and conversion of photons: applications to energy and healthcare (Conference Presentation)

Paras N. Prasad

doi:10.1117/12.2257241

3 May 2017 Nonlinear optical and multiphoton processes for in situ manipulation and conversion of photons: applications to energy and healthcare (Conference Presentation)

Paras N. Prasad

Author Affiliations +

Proceedings Volume 10101, Organic Photonic Materials and Devices XIX; 1010102 (2017) https://doi.org/10.1117/12.2257241
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

Chiral control of nonlinear optical functions holds a great promise for a wide range of applications including optical signal processing, bio-sensing and chiral bio-imaging. In chiral polyfluorene thin films, we demonstrated extremely large chiral nonlinearity. The physics of manipulating excitation dynamics for photon transformation will be discussed, along with nanochemistry control of upconversion in hierarchically built organic chromophore coupled-core-multiple shell nanostructures which enable introduce new, organic-inorganic energy transfer routes for broadband light harvesting and increased upconversion efficiency via multistep cascaded energy transfer. We are pursuing the applications of photon conversion technology in IR harvesting for photovoltaics, high contrast bioimaging, photoacoustic imaging, photodynamic therapy, and optogenetics. An important application is in Brain research and Neurophotonics for functional mapping and modulation of brain activities. Another new direction pursued is magnetic field control of light in in a chiral polymer nanocomposite to achieve large magneto-optic coefficient which can enable sensing of extremely weak magnetic field due to brain waves. Finally, we will consider the thought provoking concept of utilizing photons to quantify, through magneto-optics, and augment - through nanoptogenetics, the cognitive states, thus paving the path way to a quantified human paradigm.

Conference Presentation

View presentation recording on the SPIE Digital Library: http://dx.doi.org/10.1117/12.2257241.5390916561001

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Paras N. Prasad "Nonlinear optical and multiphoton processes for in situ manipulation and conversion of photons: applications to energy and healthcare (Conference Presentation)", Proc. SPIE 10101, Organic Photonic Materials and Devices XIX, 1010102 (3 May 2017); https://doi.org/10.1117/12.2257241

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KEYWORDS

Photons

Brain

Energy transfer

Infrared technology

Magnetism

Magneto-optics

Medicine

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