Thursday, February 23, 2017
Wednesday, February 22, 2017
Seminar: "New Paradigm for multi-TW MWIR and LWIR Atmospheric Propagation over Kilometer Ranges" by Jerome V. Moloney, 3.6.17/12:00PM-1:00PM/CREOL RM
Seminar: "New Paradigm for multi-TW MWIR and LWIR Atmospheric Propagation over Kilometer Ranges" by Jerome V. Moloney
CREOL Room 103
Jerome V. Moloney
A fundamentally new set of paradigms for sustaining individual MWIR and LWIR multi-TW light bullets over multiple kilometer range propagation distances in the atmosphere are identified. The physics can now be described by an optical carrier resolved generalized Modified Kadomtsev Petviashili (MKP) equation derivable from our UPPE model. Two competing singularities emerge 1) the usual self-focusing collapse associated with the Nonlinear Schroedinger equation and 2) an optical carrier wave shock singularity. For MWIR wavelength pulses the latter introduces a new regularization mechanism involving recurrent bursts of shock initiated (dispersive) harmonic waves limiting peak intensities, reducing ionization and eliminating the need for artificial nonlinear saturation effects. Additional new physics emerges as one moves from MWIR to LWIR wavelengths. Many-body effects associated with Coulomb scattering of weakly ionized electrons associated with spatially separated gas species become dominant and a new mechanism emerges which suppresses the standard Kerr nonlinear self-focusing. Now whole beam self-trapping becomes the dominant pulse transport mechanism replacing nonlinear filamentation. We predict that multi-TW, multi-Joule pulses can be sustained over multiple kilometer ranges. We will present simulations for MWIR and LWIR pulses propagating in two atmospheric transmission windows.
Jerome V Moloney is a Professor of Mathematics and Optical Sciences at the University of Arizona and is Director of the Arizona Center for Mathematical Sciences, an internationally recognized research center in applied mathematics. He is a fellow of the Optical Society of America and a recipient of the Alexander von Humboldt Prize in physics. Research interests span a wide range of photonics and nonlinear optics fields including ultrashort, high power femtosecond pulse propagation; computational nanophotonics, fiber laser modeling, many-body physics of semiconductor optical properties and modeling semiconductor passive and active devices. He has published more than 450 papers in peer-reviewed journals and has given over two hundred invited papers at national and international conferences.
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Saturday, February 18, 2017
IEEE/CREOL/NSTC - Distinguish Lecture - Prof. Andrea Alu from UT-Austin, February 21, 2017, 11 am, CREOL Room 103
Andrea Alù, Ph.D.
Department of Electrical and Computer Engineering
The University of Texas at Austin
Light refreshments will be served.
From Cloaking to One-Way Propagation: the Fascinating Physics and Engineering of Metamaterials
Metamaterials are artificial materials with properties well beyond what offered by nature, providing unprecedented opportunities to tailor and enhance the interaction between waves with materials. In this talk, I discuss our recent research activity in electromagnetics, nano-optics, acoustics and mechanics, showing how suitably tailored meta-atoms and arrangements of them open exciting venues to manipulate and control waves in unprecedented ways. I will discuss our recent theoretical and experimental results, including metamaterials for scattering suppression, nanostructures and metasurfaces to control wave propagation and radiation, large nonreciprocity without magnetism, giant nonlinearities in properly tailored metamaterials, and parity-time symmetric meta-atoms and metasurfaces. Physical insights into these exotic phenomena, new devices based on these concepts, and their impact on technology will be discussed during the talk.
Biography: Andrea Alù is the Temple Foundation Endowed Professor #3 at the University of Texas at Austin. He received his Laurea (2001) and PhD (2007) from the University of Roma Tre, Italy, and, after a postdoc at the University of Pennsylvania, he joined the faculty of the University of Texas at Austin in 2009. His current research interests span over a broad range of areas, including metamaterials and plasmonics, electromagnetics, nano-optics, photonics and acoustics. Dr. Alù is a Fellow of IEEE, OSA, and APS, and has received several scientific awards, including the NSF Alan T. Waterman award (2015), the OSA Adolph Lomb Medal (2013), and the URSI Issac Koga Gold Medal (2011) .
For further information please click link below: http://www.nanoscience.ucf.
Debashis Chanda, Ph.D.
RAJ MITTRA DISTINGUISHED LECTURE PROGRAM
NanoScience Technology Center
Friday, February 17, 2017
Analog Modules Inc. (“AMI”), a subsidiary of HEICO Corporation Electronic Technologies Group (NYSE:HEI.A) (NYSE:HEI), announces that Gary A. Sweezey and Timothy M. Ayres have been promoted to Co-Presidents of the organization. Ian D. Crawford, the former President of AMI, will remain on staff as Founder and CEO.
Timothy (“Tim”) M. Ayres has been employed by AMI since 1993 and has served as Product Engineer, Product Manager, and Vice President of the Laser Electronics Division. Mr. Ayres served as a Cavalry Scout in the US Army, and later received a BSEE from the University of Central Florida. Mr. Ayres is also a graduate of the University of Central Florida, CREOL, The College of Optics and Photonics where he earned an MSEE degree.
Gary A. Sweezey has been employed by AMI since 1992 and has served as Product Manager and Vice President of the Sensors Division. Mr. Sweezey is a graduate of the University of Arizona with a BSEE. Mr. Sweezey also is a graduate of the University of Central Florida, CREOL, The College of Optics and Photonics, where he earned an MSEE and a graduate of the UCF College of Business Administration where he earned an MBA.
Ian D. Crawford founded AMI in 1979 and will continue to oversee the company operations. Mr. Crawford is a graduate of the University of Edinburgh and holds a number of U.S. and U.K. patents relating to electrooptics and associated electronics.
Analog Modules, Inc. designs and produces a wide range of stand-alone and OEM analog electronic products primarily for the laser and electro-optics industries. These products serve laser and sensor applications in medical, military, scientific, and industrial markets. AMI became a member of the HEICO family in April 2001.
HEICO Corporation is engaged primarily in certain niche segments of the aviation, defense, space and electronics industries through its Hollywood, FL-based HEICO Aerospace Holdings Corp. subsidiary and its Miami, FL-based HEICO Electronic Technologies Corp. subsidiary. HEICO's customers include a majority of the world's airlines and airmotives as well as numerous defense and space contractors and military agencies worldwide in addition to medical, telecommunication and electronic equipment manufacturers. For more information about Analog Modules, Inc. please visit our website at www.analogmodules.com. For more information about HEICO, please visit www.heico.com
Wednesday, February 15, 2017
Wednesday, February 1, 2017
TOMORROW! Seminar: "Flat Nanophotonics: Controlling Light at the Nanoscale with Plasmonics and Metasurfaces" by Dr. Koray Aydin, 2.2.17/11:00AM-12:00PM/CREOL RM 103
Seminar: "Flat Nanophotonics: Controlling Light at the Nanoscale with Plasmonics and Metasurfaces" by Dr. Koray Aydin
CREOL Room 103
Dr. Koray Aydin
Nanophotonic materials and devices facilitate strong light-matter interactions at subwavelength scales, thus providing unique opportunities to control and manipulate photons. In this talk, I will present visible frequency metasurfaces for broadband phase control and anomalous reflection, spectrum splitting using metallic metasurfaces enabled by phase engineering at the subwavelength scale. I will also present two different approaches for obtaining narrow-band resonant absorption filters at visible wavelengths. First structure is based on the surface lattice resonances in periodic nanowire and nanoring arrays fabricated on a reflecting metallic substrate. As a second approach, I will briefly mention strong interference effects in unstructured continuous metal-insulator-metal filters. Enhanced photoluminescence enhancement from a single monolayer MoS2 via plasmonic nanostructures will also be discussed. 2D layered materials received great attention due to their unique optical, electrical and mechanical properties however, due to their thickness light-matter interactions is rather weak. We utilize plasmonic nanostructures to strongly enhance electric fields locally at subwavelength scales therefore facilitating increased light emission and absorption in 2D semiconducting materials.
Dr. Koray Aydin is an Assistant Professor in the Electrical Engineering and Computer Science Department at Northwestern University and leading the Metamaterials and Nanophotonic Devices Laboratory. He has received his B.S. and Ph.D. degrees in Physics from the Bilkent University in 2002 and 2008, respectively. During his PhD, he studied novel electromagnetic phenomena, such as negative refraction, subwavelength imaging, and enhanced transmission, in microwave metamaterials and photonic crystals. He has worked as a postdoctoral researcher between 2008-2010 and a research scientist between 2010-2011 at the California Institute of Technology under the supervision of Prof. Harry Atwater. Dr. Aydin’s postdoctoral research has focused on the experimental and theoretical investigation of active optical metamaterials and functional plasmonic nanostructures. His research interests are in the general area of nanophotonics, with a specific focus towards the realization of nanophotonic devices for use in energy conversion, and biosensing applications. Dr. Aydin is an Associate Member of the Turkish Academy of Sciences and the recipient of the SPIE Educational Scholarship in 2007.
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