BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York BEGIN:DAYLIGHT DTSTART:20240310T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20241103T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20241004T171042Z UID:F3B9A593-A138-4922-A3C1-764314966833 DTSTART;TZID=America/New_York:20241003T110000 DTEND;TZID=America/New_York:20241003T120000 DESCRIPTION:Abstract: Phase-change materials (PCMs) have emerged as a promi sing platform to modulate light in a nonvolatile manner—a reversible swi tching between their stable amorphous and crystalline states leads to an i mpressive refractive index contrast (∆n\, ∆k ~1−3). The last decade has seen a growing interest in such a combination of properties for a vari ety of nonvolatile programmable devices\, such as metasurfaces\, tunable f ilters\, phase/amplitude modulators\, color pixels\, thermal camouflage\, photonic memories/computing\, plasmonics\, and more. Thus\, PCMs have demo nstrated outstanding versatility and integration in low-energy photonic ap plications. Integrated photonics\, in particular\, has benefited from the progress of PCMs such as Sb2Se3 and Ge2Sb2Te5 for ultra-compact phase and amplitude modulators\, respectively\, using all-optical and electro-therma l approaches. These low-energy devices allow small-form-factor quasi-passi ve silicon photonics\, i.e. silicon photonics with zero-static power\, yet with the ability to reconfigure actively—crucial properties in applicat ions such as in-memory computing\, optical synapses\, zero-power photonic switches\, trimming\, and optical storage. This talk will discuss the fund amental principles and switching mechanisms of PCMs in integrated photonic platforms and the state-of-the-art achievements\, current efforts\, and o pen challenges.\n\nBio: Carlos A. Ríos Ocampo is an Assistant Professor a t the University of Maryland\, College Park\, where he has led the Photoni c Materials & Devices groups since 2021. Before joining UMD\, Carlos was a Postdoctoral Associate at MIT\, received a DPhil (PhD) degree in 2017 fro m the University of Oxford (UK)\, an MSc degree in Optics and Photonics in 2013 from the KIT (Germany)\, and a BSc in Physics in 2010 from the Unive rsity of Antioquia (Colombia). Carlos’s scientific interests focus on st udying and developing new on-chip technologies driven by the synergy betwe en nanomaterials and photonics.\n\nLocal J-1035 Pavillon J. A. Bombardier\ , Polytechnique Montréal\, Montréal\, Quebec\, Canada LOCATION:Local J-1035 Pavillon J. A. Bombardier\, Polytechnique Montréal\, Montréal\, Quebec\, Canada ORGANIZER:Benjamin.crockett@ieee.org SEQUENCE:30 SUMMARY:Programmable Integrated Photonics with Phase-change Materials URL;VALUE=URI:https://events.vtools.ieee.org/m/436729 X-ALT-DESC:Description: <br /><p><img src="https://events.vtools.ieee.org/v tools_ui/media/display/6ddf6843-8778-4325-9992-a7ec2fab27b6" width="971" h eight="545"></p>\n<p><strong>Abstract: </strong>Phase-change materials (PC Ms) have emerged as a promising platform to modulate light in a nonvolatil e manner&mdash\;a reversible switching between their stable amorphous and crystalline states leads to an impressive refractive index contrast (∆n\ , ∆k ~1&minus\;3). The last decade has seen a growing interest in such a combination of properties for a variety of nonvolatile programmable devic es\, such as metasurfaces\, tunable filters\, phase/amplitude modulators\, color pixels\, thermal camouflage\, photonic memories/computing\, plasmon ics\, and more. Thus\, PCMs have demonstrated outstanding versatility and integration in low-energy photonic applications. Integrated photonics\, in particular\, has benefited from the progress of PCMs such as Sb<sub>2</su b>Se<sub>3 </sub>and Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> for ultra- compact phase and amplitude modulators\, respectively\, using all-optical and electro-thermal approaches. These low-energy devices allow small-form- factor quasi-passive silicon photonics\, i.e. silicon photonics with zero- static power\, yet with the ability to reconfigure actively&mdash\;crucial properties in applications such as in-memory computing\, optical synapses \, zero-power photonic switches\, trimming\, and optical storage. This tal k will discuss the fundamental principles and switching mechanisms of PCMs in integrated photonic platforms and the state-of-the-art achievements\, current efforts\, and open challenges.</p>\n<p><strong>Bio: </strong>Carlo s A. R&iacute\;os Ocampo is an Assistant Professor at the University of Ma ryland\, College Park\, where he has led the Photonic Materials &amp\; Dev ices groups since 2021. Before joining UMD\, Carlos was a Postdoctoral Ass ociate at MIT\, received a DPhil (PhD) degree in 2017 from the University of Oxford (UK)\, an MSc degree in Optics and Photonics in 2013 from the KI T (Germany)\, and a BSc in Physics in 2010 from the University of Antioqui a (Colombia). Carlos&rsquo\;s scientific interests focus on studying and d eveloping new on-chip technologies driven by the synergy between nanomater ials and photonics.&nbsp\;</p> END:VEVENT END:VCALENDAR