Prof. Howard Lee
Associate Professor, Department of Physics and Astronomy
Associated Faculty, UCI Beckman Laser Institute and Medical Clinic
Faculty, UCI Convergence Optical Sciences Initiative
University of California, Irvine
Abstract: Ground-breaking platforms for nanoscale manipulation of light have been demonstrated in recent years. These include epsilon-near-zero (ENZ) materials and optical metasurfaces, those offer unique optical features such as sub-wavelength field confinement, unusual optical nonlinear/quantum properties, and advanced wavefront shaping for emerging optical imaging, bio/optical sensing, energy/quantum, and communication applications. This talk will review our research efforts on tunable meta/ENZ-optics. I will present our recent advances on the study of enhanced ultrafast nonlinearity and broadband and field-effect tunable absorption in ultrathin transparent conducting oxide ENZ materials meta-film fabricated by atomic layer deposition technique. I will also present the enhanced emission properties of 2D materials through the use of ENZ substrate. Those studies are significant for developing advanced optical spectroscopy, novel laser sources, and ultrafast nanophotonic devices. Finally, I will discuss our study on a new type of “meta”-optical fiber which merges the sciences of metasurfaces, zero-index/plasmonic materials, and optical fibers. The development of the first ultrathin optical fiber metalens and color filter for advanced in-fiber imaging applications and plasmonic fiber for tip-enhanced Raman molecular spectroscopy will be discussed. These advanced “meta”-optical fibers open the path to novel in-fiber lasers/spectroscopies, optical imaging/sensing, and optical/quantum communication devices.
Негізгі бет Prof. Howard Lee -Extreme Light-matter Interaction in Zero-index Materials and “Meta”-Optical Fibers
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