BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT DTSTART:20190310T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20191103T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20191017T204206Z UID:43CEC9A5-ABD1-4340-AD0D-5F49DE149105 DTSTART;TZID=America/Los_Angeles:20191007T180000 DTEND;TZID=America/Los_Angeles:20191007T200000 DESCRIPTION:Controlling the flow of light is fundamental to optical applica tions. With the recent advances in nanofabrication capabilities and new th eoretical concepts\, ground breaking platforms for the nanoscale manipulat ion of light have been demonstrated in recent years. These include metasur face and epsilon-near-zero (ENZ) materials and structures\, which offer un ique optical features such as sub-wavelength field confinement\, unusual o ptical nonlinear/quantum properties and advanced wavefront shaping for eme rging optical imaging\, bio/optical sensing\, and communication applicatio ns.\n\nThis talk will review research efforts on tunable meta/ENZ-optics f or developing emerging optical applications. Dr Howard Lee will present re cent developments on the use of transparent conducting oxide materials to demonstrate a gate-tunable optical metasurfaces that can tune the optical phase and amplitude for ultrathin beam steering devices [1]. In addition\, a broadband\, field-effect tunable\, and ultrathin ENZ perfect absorber e nabled by the excitation of ENZ modes will be discussed [2\,3]. Dr Lee wil l also discuss the active control of emission properties of quantum emitte rs and enhanced ultrafast optical nonlinearity in hybrid ENZ-plasmonic het erostructures. Finally\, he will present a study on “Meta”-optical fib er by integrating metasurfaces and zero-index materials with optical fiber s to develop novel and ultracompact in-fiber optical devices such as an op tical fiber metalens and a color filter [4\,5]. These advanced “meta”/ ENZ-optical fibers open the path to revolutionary in-fiber lasers\, optica l imaging\, and optical/quantum communication devices [6].\n\n1. Y. W. Hua ng\, H. W. Lee\, R. Sokhoyan\, R. Pala\, K. Thyagarajan\, S. Han\, D. P. T sai\, and H. A. Atwater\, “Gate-tunable conducting oxide metasurfaces\, ” Nano Lett. 16\, 5319-5325 (2016).\n2. A. Anopchenko\, L. Tao\, C. Arnd t\, H. W. Lee\, “Field-effect tunable and broadband Epsilon-near-zero pe rfect absorbers with deep subwavelength thickness\,” ACS Photonics 5\, 2 631 (2018).\n3. A. Anopchenko\, S. Gurung\, L. Tao\, C. Arndt\, H. W. Lee\ , “Atomic Layer Deposition of Ultra-thin and smooth Al-doped ZnO for Zer o-Index Photonics”\, Materials Research Express\, 5\, 014012 (2018).\n4. K. Minn\, A. Anopchenko\, J. Yang\, H. W. Lee\, “Excitation of epsilon- near-zero resonance in ultra-thin indium tin oxide shell embedded nanostru ctured optical fiber\,” Nature Scientific Reports 8\, 2342 (2018).\n5. J . Yang\, I Ghirmire\, P. C. Wu\, S. Gurung\, C. Arndt\, D. P. Tsai\, H. W. Lee\, “Photonic crystal fiber metalens”\, Nanophotonics 8\, 443-449 ( 2019).\n6. G. K. L. Wong\, M. S. Kang\, H. W. Lee\, F. Biancalana\, C. Con ti\, T. Weiss and P. St.J. Russell\, “Orbital angular momentum resonance s in helically twisted photonic crystal fiber\,” Science 337\, 446-449 ( 2012)\n\nSpeaker(s): Howard Lee\, Assistant Professor\, Department of Phys ics\, Baylor University\, \n\nAgenda: \nMonday\, 7 October 2019\n\n6 - 6:3 0 pm food and networking\n\n6:30 - 8:00 pm presentation and Q/A\n\nBldg: B uilding C training center\, Advanced Test Equipment Corp\, 10401 Roselle S t\, San Diego\, California\, United States\, 92121 LOCATION:Bldg: Building C training center\, Advanced Test Equipment Corp\, 10401 Roselle St\, San Diego\, California\, United States\, 92121 ORGANIZER:houssaye@gmail.com SEQUENCE:5 SUMMARY:Gate-tunable Zero-index Materials and Meta-photonics for Extreme Li ght-matter Interaction URL;VALUE=URI:https://events.vtools.ieee.org/m/205775 X-ALT-DESC:Description: <br /><p>Controlling the flow of light is fundament al to optical applications.&nbsp\;With the recent advances in nanofabricat ion capabilities and new theoretical&nbsp\;concepts\, ground&nbsp\;breakin g platforms for the nanoscale manipulation of light&nbsp\;have been demons trated in recent years. These include metasurface and&nbsp\;epsilon-near-z ero (ENZ)&nbsp\;materials and structures\, which offer unique optical&nbsp \;features such as sub-wavelength field confinement\, unusual optical&nbsp \;nonlinear/quantum properties and advanced&nbsp\;wavefront shaping for em erging&nbsp\;optical imaging\, bio/optical sensing\, and communication app lications.<br class="" /><br class="" />This&nbsp\;talk will review resear ch efforts on tunable meta/ENZ-optics for developing&nbsp\;emerging optica l applications. Dr Howard Lee will present recent developments on&nbsp\;th e use of transparent conducting&nbsp\;oxide materials to demonstrate a gat e-tunable optical metasurfaces&nbsp\;that&nbsp\;can&nbsp\;tune the optical &nbsp\;phase and&nbsp\;amplitude for ultrathin beam steering devices [1]. In addition\, a broadband\,&nbsp\;field-effect tunable\, and ultrathin ENZ perfect absorber&nbsp\;enabled by the&nbsp\;excitation of ENZ modes will be discussed [2\,3]. Dr Lee will also discuss the active&nbsp\;control of emission properties of quantum emitters and&nbsp\;enhanced ultrafast optic al&nbsp\;nonlinearity in hybrid ENZ-plasmonic heterostructures. Finally\, he will present a study on &ldquo\;Meta&rdquo\;-optical fiber by integrati ng&nbsp\;metasurfaces and zero-index&nbsp\;materials with optical fibers t o develop novel and ultracompact in-fiber&nbsp\;optical devices such as an optical fiber metalens&nbsp\;and a color filter [4\,5]. These advanced &l dquo\;meta&rdquo\;/ENZ-optical fibers open the path to revolutionary&nbsp\ ;in-fiber lasers\, optical imaging\, and optical/quantum&nbsp\;communicati on devices [6].</p>\n<p>&nbsp\;</p>\n<p>1.&nbsp\;Y.&nbsp\;W. Huang\, H. W. Lee\, R. Sokhoyan\, R. Pala\, K. Thyagarajan\, S. Han\, D. P. Tsai\,&nbsp \;and H. A. Atwater\, &ldquo\;Gate-tunable conducting oxide metasurfaces\, &rdquo\;&nbsp\;Nano Lett.&nbsp\;16\, 5319-5325 (2016).<br class="gmail-" / >2.&nbsp\;A.&nbsp\;Anopchenko\, L. Tao\, C. Arndt\, H. W. Lee\, &ldquo\;Fi eld-effect tunable and broadband&nbsp\;Epsilon-near-zero perfect absorbers with deep subwavelength thickness\,&rdquo\;&nbsp\;ACS Photonics&nbsp\;5\, 2631 (2018).<br class="gmail-" />3.&nbsp\;A.&nbsp\;Anopchenko\, S. Gurung \, L. Tao\, C. Arndt\, H. W. Lee\, &ldquo\;Atomic Layer Deposition of&nbsp \;Ultra-thin and smooth Al-doped ZnO for Zero-Index Photonics&rdquo\;\,&nb sp\;Materials Research Express\,&nbsp\;5\,&nbsp\;014012&nbsp\;(2018).<br c lass="gmail-" />4.&nbsp\;K.&nbsp\;Minn\, A. Anopchenko\, J. Yang\, H. W. L ee\, &ldquo\;Excitation of epsilon-near-zero&nbsp\;resonance in ultra-thin indium tin oxide shell embedded nanostructured optical&nbsp\;fiber\,&rdqu o\;&nbsp\;Nature Scientific Reports&nbsp\;8\, 2342 (2018).<br class="gmail -" />5.&nbsp\;J.&nbsp\;Yang\, I Ghirmire\, P. C. Wu\, S. Gurung\, C. Arndt \, D. P. Tsai\, H. W. Lee\,&nbsp\;&ldquo\;Photonic crystal fiber metalens& rdquo\;\, Nanophotonics 8\, 443-449 (2019).<br class="gmail-" />6.&nbsp\;G .&nbsp\;K. L. Wong\, M. S. Kang\, H. W. Lee\, F. Biancalana\, C. Conti\, T . Weiss and P.&nbsp\;St.J. Russell\, &ldquo\;Orbital angular momentum reso nances in helically twisted&nbsp\;photonic crystal fiber\,&rdquo\;&nbsp\;S cience&nbsp\;337\,&nbsp\;446-449 (2012)</p><br /><br />Agenda: <br /><p st yle="font-weight: 400\;">Monday\, 7 October 2019</p>\n<p style="font-weigh t: 400\;">6 - 6:30 pm food and networking</p>\n<p style="font-weight: 400\ ;">6:30 - 8:00 pm presentation and Q/A&nbsp\;</p> END:VEVENT END:VCALENDAR