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Patrick LiKamWa

dblp:58/8441 · also P. L. LiKamWa · DBLP profile ↗
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3ranked-venue papers
0as first author
0since 2021 · last 2020
0000-0003-2131-6875ORCID · corroborated

Domains — the database's venue-derived domains; a paper can count in several

Graphics, computer vision, multimedia, augmented reality and games · 2Human-computer interaction and ubiquitous computing · 1Applied, interdisciplinary, general and emerging computing · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer architecture, parallel and distributed computing, and storage systems
1 paper
Integrated circuit design · 100%

Topics — the 1 heaviest of 1, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Integrated circuit design
photonic integrated circuits
0.412020
Electrically Pumped Microring Parity-Time-Symmetric Lasers · Proc. IEEE 2020
YearPublicationVenuePosition
2020 Electrically Pumped Microring Parity-Time-Symmetric Lasers
abstract
Microscale and nanoscale electrically pumped lasers are expected to play an indispensable role in future photonic integrated circuits. Small footprint, low threshold, high efficiency, and large side-mode suppression ratio (SMSR) are among the most important characteristics that such on-chip emitters should exhibit-allowing for large-scale integrability, low energy consumption, and stable output power. Microring resonators are one of the main contenders for the realization of such compact light sources. However, the use of microring laser cavities has been so far hindered by their tendency to operate in multiple modes. Quite recently, several studies have shown that notions from parity-time (PT)-symmetry and non-Hermitian physics can be utilized to effectively enforce single-mode operation in semiconductor microring laser arrangements. However, as of now, most works in this area were mainly devoted to the proof of concept demonstrations, while the feasibility of practical implementation has remained largely unexplored. In this article, we demonstrate the first regrowth free, electrically pumped microscale PT-symmetric laser. Our results can pave the way toward the utilization of exceptional points in more diverse applications ranging from on-chip light sources and modulators to laser beam steering systems and active sensors.
William E. Hayenga, Hipolito Garcia-Gracia, Enrique Sanchez Cristobal, Midya Parto, Hossein Hodaei, Patrick LiKamWa, Demetrios N. Christodoulides, Mercedeh Khajavikhan
Proc. IEEE6
2014 Computation of polarized subsurface BRDF for rendering
Charly Collin, Sumanta N. Pattanaik, Patrick LiKamWa, Kadi Bouatouch
Graphics Interface3
2014 Discrete ordinate method for polarized light transport solution and subsurface BRDF computation
Charly Collin, Sumanta N. Pattanaik, Patrick LiKamWa, Kadi Bouatouch
Comput. Graph.3