Chirality control of multiphoton excitations, dynamics, and magneto-optic behavior in hybrid systems
Abstract
We propose to develop rational design, synthesis, and characterization of novel polymer-based nanocomposites by establishing structure-property relations for polarization and spin-magnetic field-dependent properties. By establishing these structure-property relations, we will shed light on the physical mechanisms of photon coupling to the internal electronic and vibronic degrees of freedom. Working out design criteria for achieving extremely large linear and nonlinear optical and magneto-optic activities and enhancing associated circular polarization-selective phenomena via materials architecture represents an exciting new direction with substantial opportunity in many technological areas of civilian and military importance, such as 3D displays, all-optical telecommunication and signal processing, and quantum information. The new developments proposed here provide an opportunity for AFOSR to take a lead in these emerging areas. In the proposed project, specifically, we will- Design and synthesize, guided by multi-scale modeling, new chiral helical polymers with tunable optical activity (linear and nonlinear circular dichroism, CD) and magneto-optic Verdet constant (magnetic circular dichroism, MCD); Explore plasmonic and excitonic enhancements of the chiroptical and magneto-optic properties of polymer-based nanocomposite materials created via in situ growth of anisotropic plasmonic nanostructures, including nanostars and nanoprisms as well as by a new design scheme to couple chiral polymers with plasmonic and excitonic moieties; Develop a new class of hybrid polymer-based organic-2D inorganic materials with amplified magneto-optic properties for applications in integrated photonic circuitry and brain research; Probe light-spin selective nonlinear vibronic coupling involving background-free third-order doubly-resonant infrared-visible vibrational sum frequency generation. Our overall approach involves convergent science integrating modeling-guided polymer design and synthesis, inorganic materials chemistry, physics and photonics. The research proposed here is based on major advancements made under the previously funded research.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2025
- Source ID
- FA95502410118
Entities
People
- Paras Nath Prasad
Organizations
- Air Force Office of Scientific Research
- Research Foundation for the State University of New York
- United States Air Force