BEGIN:VCALENDAR VERSION:2.0 PRODID:-//UNIFY BEGIN:VTIMEZONE TZID:America/New_York X-LIC-LOCATION:America/New_York BEGIN:DAYLIGHT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:EDT DTSTART:19700308T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0400 TZOFFSETTO:-0500 TZNAME:EST DTSTART:19701101T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:https://events.ucf.edu/event/4223856/distinguished-lecturer-bahaa-saleh/ DTSTAMP:20261023T110000 DTSTART:20261023T110000 DTEND:20261023T120000 LOCATION:CREOL: 102 SUMMARY:Distinguished Lecturer: Bahaa Saleh URL:https://events.ucf.edu/event/4223856/distinguished-lecturer-bahaa-saleh/ DESCRIPTION:Title: The Science of Inverse Lithography: Discovery vs. Recovery\n\nAbstract: As feature sizes in semiconductor fabrication shrink far below the wavelength of light used to print them, mask patterns no longer resemble the circuits they yield -- they must be discovered, not merely designed. This talk explores this discovery challenge and the inverse-problem methodology required to solve it.\n\nIn optical processing, image recovery estimates an unknown object distribution from a blurred measurement taken through a known imaging system. Image discovery, by contrast, synthesizes an object distribution capable of producing a desired target image at the output of a known, distorting optical system. While both inverse problems can achieve super-resolution, each presents a distinct theoretical hurdle: uniqueness for recovery, and existence for discovery.\n\nThis talk focuses on inverse image synthesis and its application to photolithography under diffraction-limited conditions and high-contrast, nonlinear photoresist responses, utilizing both coherent and partially coherent illumination. I will review my early foundational research that established the mathematical principles of Inverse Lithography Technology (ILT) -- work that has propelled widespread industrial adoption and received recent recognition.\n\nAbout the speaker: Bahaa Saleh is University Distinguished Professor Emeritus at CREOL, The College of Optics and Photonics, University of Central Florida, where he served as Dean from 2009 to 2019. He previously held faculty and research positions at a number of institutions including Boston University (1994-2008, serving as Chair of the Department of Electrical and Computer Engineering from 1994-2007 and becoming Professor Emeritus in 2009), the University of Wisconsin-Madison (1977-1994, serving as Chair of the ECE Department from 1990-1994), the University of Santa Catarina in Brazil, Kuwait University, the Max Planck Institute in Germany, the University of California-Berkeley, and Columbia University.\n\nHis research contributions cover a broad range of topics in optics and photonics, such as statistical optics, nonlinear optics, quantum optics, and image science. Saleh is a highly acclaimed author, having written Photoelectron Statistics (Springer, 1978), Fundamentals of Photonics (Wiley, Third Edition 2018, with M. C. Teich), Introduction to Subsurface Imaging (Cambridge University Press, 2011), and Quantum Photonics (Springer, 2025). He has published over 600 papers in journals and conference proceedings, and he holds 10 patents.\n\nSaleh is a renowned figure in optics and photonics, having served as founding editor of Advances in Optics and Photonics (2008-2013) and editor of the Journal of the Optical Society of America A (1991-1997). He was also Vice President of the International Commission of Optics (2000-2002). He is Fellow of IEEE, Optica (formerly OSA), SPIE, APS, and the Guggenheim Foundation. He has received numerous awards and commendations, including OSA Beller Medal (1999), SPIE Photomask-Technology BACUS award (2004 and 2025), Kuwait Prize (2006), OSA Distinguished Service Award (2008 ), OSA Mees Medal (2013), and SPIE Photonics Education award (2026). END:VEVENT BEGIN:VEVENT UID:https://events.ucf.edu/event/4208783/creol-fall-colloquium-daniel-palanker-stanford-university/ DTSTAMP:20261030T110000 DTSTART:20261030T110000 DTEND:20261030T120000 LOCATION:Virtual and CREOL : 103 SUMMARY:CREOL Fall Colloquium: Daniel Palanker, Stanford University URL:https://events.ucf.edu/event/4208783/creol-fall-colloquium-daniel-palanker-stanford-university/ DESCRIPTION:Title: Prosthetic vision with a photovoltaic substitute for the lost photoreceptors\n\nAbstract: Retinal degenerative diseases lead to blindness due to loss of photoreceptors, while neurons in the inner retinal layers are still preserved. We developed a system substituting the lost photoreceptors with photovoltaic arrays. Visual information captured by a camera is projected onto the subretinal implant from augmented-reality glasses using pulsed near-infrared (880nm) light. Photovoltaic pixels convert this light into electric current, stimulating the second-order retinal neurons, which then pass visual information through the retinal neural network to the brain. This approach preserves many features of natural vision, simplifies surgery by avoiding bulky electronics and wiring, allows scaling the number of electrodes to thousands and retains normal association of eye movements with visual perception.\n\nPhotovoltaic arrays implanted in patients blinded by age-related macular degeneration provides monochromatic form vision perceived simultaneously with the remaining peripheral natural vision. Clinical trials with 43 patients across 17 centers in 5 European countries demonstrated letter acuity matching their 100mm pixel size (20/420). Electronic zoom enables patients to read and write smaller fonts, improving visual acuity, on average, by 5 lines of the vision chart - up to 20/63.\n\nDecreasing the pixel size for higher resolution is challenging due to reduced penetration depth of electric field in tissue. We developed various strategies for shaping the electric field, including current steering and 3-dimensional electrodes. With this new design, grating acuity with 40mm pixels in rats matched the pixel pitch, while with 20mm, it reached their natural resolution limit of 28mm. If successful in clinical trials, implants with 20mm pixels have the potential to increase acuity up to 20/80 without zoom, providing highly functional restoration of sight to millions of patients blinded by retinal degeneration.\n\nAbout the speaker: Daniel Palanker is a Professor of Ophthalmology and by courtesy, of Electrical Engineering at Stanford University. He received PhD in Applied Physics (biomedical optics) in 1994 from the Hebrew University of Jerusalem, Israel, and postdoctoral training in Physics (ultrafast lasers) in 1996-1998 at Stanford University, CA.\n\nDr. Palanker studies interactions of electric field with biological cells and tissues, and develops optical and electronic technologies for diagnostic, therapeutic, surgical and prosthetic applications, primarily in ophthalmology. In the field of laser-tissue interactions, his group developed several ophthalmic laser systems, including Pattern Scanning Laser Photocoagulator (PASCAL, Iridex) and Femtosecond Laser for Cataract Surgery (Catalys, J&J). In the field of electrosurgery, he developed the scalpel-size electrosurgical tool with single-cell precision (PlasmaBlade, Medtronic). In the area of ophthalmic imaging, he is working on optoretinography - label-free imaging of neural signals based on phase-resolved OCT.\n\nIn the field of electro-neural interfaces, his lab developed the photovoltaic subretinal prosthesis for restoration of central vision in patients blinded by retinal degeneration (PRIMA), neural stimulator for enhancement of tear secretion (TrueTear, Allergan) and devices for electronic control of blood flow.\n\nVirtual Location URL: https://ucf.zoom.us/j/92569132660?from=addon END:VEVENT BEGIN:VEVENT UID:https://events.ucf.edu/event/4223769/ieee-distinguished-speaker-daniel-m-kuchta/ DTSTAMP:20261106T130000 DTSTART:20261106T130000 DTEND:20261106T140000 LOCATION:CREOL : 103 SUMMARY:IEEE Distinguished Speaker: Daniel M. Kuchta URL:https://events.ucf.edu/event/4223769/ieee-distinguished-speaker-daniel-m-kuchta/ DESCRIPTION:Title: CO-PACKAGED OPTICAL TRANSCEIVERS FOR HPC, DATA CENTER AND AI APPLICATIONS \n \nAbstract: This talk will cover the status of fiber optic transceiver co-packaging efforts, both VCSEL- and SiPh-based, where they fit into the Ethernet switch market and the evolving Computer IO market, and how these technologies are advancing HPC (High Performance Computing), Data Center, and AI applications. The emphasis will be on new requirements and challenges driven by AI systems.\n\nAbout the Speaker: Daniel M. Kuchta (IEEE Fellow 2019) is a Principal Hardware System Architect at Nvidia. Previously he was a Research Staff Member in the Communications and Computation Subsystems Department at the IBM Thomas J. Watson Research Center since 1992. He received B.S., M.S., and Ph.D. degrees in Electrical Engineering and Computer Science from the University of California at Berkeley in 1986, 1988, and 1992, respectively. While at IBM Research he has worked on high-speed VCSEL characterization, multimode fiber links, parallel fiber optic links, and optics co-packaging technology research. He received IEEE J. of Lightwave Technology best paper award in 2014 and in 2018 was the first recipient of the IEEE Photonics Technology Letters best paper award. He was Technical Program Chair for OFC 2018 and General Chair for OFC 2020. Dr. Kuchta is an author/coauthor of more than 145 technical papers and inventor/co-inventor of at least 40 patents.\n\nRegister: [IEEE Photonics Society Distinguished Speaker: Dr. Daniel Kuchta : vTools Events | vTools IEEE](https://events.vtools.ieee.org/m/582313)\nRegistration Link: https://events.vtools.ieee.org/m/582313 END:VEVENT BEGIN:VEVENT UID:https://events.ucf.edu/event/4225993/creol-faculty-candidate-presentation-lucem-sequimur-light-matter-interaction-from-the-photon-perspective/ DTSTAMP:20261109T130000 DTSTART:20261109T130000 DTEND:20261109T140000 LOCATION:Virtual and CREOL : 103 SUMMARY:CREOL Faculty Candidate Presentation: Lucem sequimur: Light-matter interaction from the photon perspective URL:https://events.ucf.edu/event/4225993/creol-faculty-candidate-presentation-lucem-sequimur-light-matter-interaction-from-the-photon-perspective/ DESCRIPTION:Presentation: Lucem sequimur: Light-matter interaction from the photon perspective \nLight is more than a tool for perception - it is the fundamental medium through which we interrogate the physical world, from nanometric structures to the farthest reaches of the cosmos. It also underpins much of modern technology, from global telecommunications and biomedical imaging to emerging optical and photonic computing architectures. In this discussion, we follow the light. Rather than adopting the traditional material-centric view of light-matter interaction, we take a complementary perspective and ask what becomes possible, when the properties of the photon itself, its energy, momentum and spatial extent become the variables we engineer. First, we exploit photon energy. We demonstrate how previously underutilized nondegenerate multiphoton processes can be repurposed to enable efficient broadband optical detection spanning multiple spectral octaves using conventional semiconductor detectors. This approach has enabled a range of new capabilities, including high-speed label-free chemically specific imaging, infrared volumetric imaging, hyperspectral infrared video microscopy and related modalities. Second, we exploit photon momentum, exploring a new photonic regime that emerges directly from the Heisenberg uncertainty principle governing the spatial and momentum degrees of freedom of light. Extreme confinement at nanometric dielectric discontinuities localizes the optical field to dimensions approaching one nanometer, necessarily broadening its momentum distribution. The resulting photonic state contains large-momentum components that can bridge the momentum separation between electronic states, dramatically enhancing optical transitions that are strongly momentum-suppressed in the far field. This picture suggests a fundamentally different route to controlling light-matter interaction: rather than modifying a material to accommodate the photon, we engineer the momentum structure of light while leaving the underlying electronic structure of the material largely unchanged. We refer to the resulting optical fields as momentum-expanded photonic states, in which the spatial extent and momentum distribution of light directly govern the accessibility of electronic transitions. At its core, this work asks a simple question: can we change the optical properties of matter without changing the matter itself?\n\nAbout the candidate: Dmitry A. Fishman received Ph.D. from University of Groningen (Netherlands) in 2008. Since then, he worked at several universities and national labs across the globe, including Grenoble High Magnetic Field Laboratory (CNRS, France), College of Optics and Photonics at University of Central Florida (USA). Prof. Fishman's research team in the Department of Chemistry at UC Irvine works at the intersection of optics and condensed matter physics/chemistry - understanding and control of light-matter interaction across times and scales. These studies have enabled several fundamental discoveries and spectroscopic modalities, particularly in chemical sensing and imaging: (a) ultrafast time-resolved imaging beyond diffraction limit through photo-induced force, (b) first observation of single molecule vibration in time, (c) infrared light detection by conventional visible detectors and several label-free chemical sensitive imaging modalities, (d) the development of momentum-expanded photonic states for controlling optical transitions. Through his research programs, Dr. Fishman founded, developed and currently directs Laser Spectroscopy Laboratories at UC Irvine - an advanced scientific hub aimed at research and education in the fields of light-matter interactions, linear and nonlinear optics, physics and chemistry.\n\nVirtual Location URL: https://ucf.zoom.us/j/97662204266 END:VEVENT BEGIN:VEVENT UID:https://events.ucf.edu/event/4189378/creol-fall-colloquium-mikael-rechtsman-penn-state-university/ DTSTAMP:20261113T110000 DTSTART:20261113T110000 DTEND:20261113T120000 LOCATION:Virtual and CREOL: 102 SUMMARY:CREOL Fall Colloquium: Mikael Rechtsman, Penn State University URL:https://events.ucf.edu/event/4189378/creol-fall-colloquium-mikael-rechtsman-penn-state-university/ DESCRIPTION:Mikael Rechtsman \nPhysics Department, Penn State University\n\nTile: Two experiments on aperiodic photonic crystals\n\nAbstract: Photonic crystals -- transparent periodic dielectric structures -- have been called "semiconductors for light" in the sense that photons propagate through them much as electrons propagate through crystalline solids. In the first part of my talk, I will show how straining a photonic crystal can make photons behave as though they were electrons immersed in a magnetic field, leading to Landau levels for light. In the second part, I will employ photonic crystals to explore the scattering properties of highly spatially correlated, so-called "stealthy-hyperuniform," disorder.\n\n \n\nVirtual Location URL: https://ucf.zoom.us/j/97856347160?from=addon END:VEVENT END:VCALENDAR