BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//IEEE Toronto Section - ECPv6.15.17//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://www.ieeetoronto.ca
X-WR-CALDESC:Events for IEEE Toronto Section
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Toronto
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20160313T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20161106T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20170312T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20171105T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20180311T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20181104T060000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Toronto:20170531T140000
DTEND;TZID=America/Toronto:20170531T150000
DTSTAMP:20260424T235012
CREATED:20210430T012916Z
LAST-MODIFIED:20210430T211608Z
UID:10000060-1496239200-1496242800@www.ieeetoronto.ca
SUMMARY:InAs Quantum Dot Micro-disk Lasers Grown on Exact (001) Si Emitting at Communication Wavelengths
DESCRIPTION:Wednesday May 31\, 2017 at 2:10 p.m. Kei May Lau\, Fang Professor of Engineering and Chair Professor at the Hong Kong University of Science and Technology will be presenting “InAs Quantum Dot Micro-disk Lasers Grown on Exact (001) Si Emitting at Communication Wavelengths”. \nDay & Time: Wednesday May 31\, 2017\n2:10 p.m. – 3:00 p.m. \nSpeaker: Kei May Lau\nFang Professor of Engineering and Chair Professor\nDepartment of Electronic and Computer Engineering\nHong Kong University of Science and Technology \nLocation: Room BA 1220\n40 St. George Street\nToronto\, ON M5S 2E4 \nContact: Junho Jeong \nOrganizers: IEEE Toronto Photonics Society \nAbstract: To support an energy-efficient optical interconnect technology enabled by silicon photonics\, development of low-energy-consumption active devices and the corresponding integration technology is needed. Most communication wavelength lasers with excellent device performance have been grown on III-V substrates and bonded to silicon. For integration\, there are considerable advantages in a technology that allow growth and fabrication of such lasers on III-V/ Si compliant substrates. Quantum dot (QD) active layers grown on lattice-matched substrates have already shown their capability for lasers with low-threshold densities and temperature-independent operation. In addition\, the reduced sensitivity of QD to defects and their unique capability of filtering dislocations make them an ideal candidate as the gain medium of hetero-integrated III-V on Si optical sources. In this talk\, I will discuss the growth of multi-stack QDs on compliant substrates by MOCVD. Fabrication and laser characteristics of whispering-gallery-mode (WGM) micro-disk lasers using the grown epitaxial structures will also be discussed. Initial demonstration was achieved using simple a colloidal lithography process in combination with dry and wet-etching. The micro-disk lasers were one to four microns in diameter\, with single mode lasing at either 1.3 or 1.55 μm\, depending on the barrier/cladding system. With smooth sidewalls and sufficient undercut by wet etching of the pedestal\, the air-cladded MDs exhibit ultra-low thresholds of a few mW by optical pumping. Preliminary results of electrically-pumped micro-lasers will also be presented. These energy-efficient microlasers are excellent candidates for on-chip integration with silicon photonics. \nBiography: Professor Kei May Lau is Fang Professor of Engineering at the Hong Kong University of Science and Technology (HKUST). She received the B.S. and M.S. degrees in physics from the University of Minnesota\, Minneapolis\, and the Ph.D. degree in Electrical Engineering from Rice University\, Houston\, Texas. She was on the ECE faculty at the University of Massachusetts/Amherst and initiated MOCVD\, compound semiconductor materials and devices programs. Since the fall of 2000\, she has been with the ECE Department at HKUST. She established the Photonics Technology Center for R&D effort in III-V materials\, optoelectronic\, high power\, and high-speed devices. Professor Lau is a Fellow of the IEEE\, and a recipient of the US National Science Foundation (NSF) Faculty Awards for Women (FAW) Scientists and Engineers (1991) and Croucher Senior Research Fellowship (2008). She is an Editor of the IEEE EDL and Associate Editor of Applied Physics Letters.
URL:https://www.ieeetoronto.ca/event/inas-quantum-dot-micro-disk-lasers-grown-on-exact-001-si-emitting-at-communication-wavelengths/
LOCATION:Room BA 1220 40 St. George Street\, Toronto\, ON M5S 2E4
CATEGORIES:Circuits & Devices
END:VEVENT
END:VCALENDAR