ECE Seminar Topic: III-V Lasers and Their Integrating with Silicon Photonics for LiDAR Applications
Topic:
“III-V Lasers and Their Integrating with Silicon Photonics for LiDAR Applications”
Speaker:
Dr. Elif Demirbas
Assistant Professor, Physics, Photonics and Optical Engineering
Bridgewater State University
Abstract:
Semiconductor lasers or laser diodes are essential in many applications where compact, coherent, and efficient light sources are needed, such as in telecom, datacom, sensing, and especially LiDAR systems. A major benefit to these laser diodes is the ability to integrate them with metasurfaces or photonic integrated circuit (PIC) components through hybrid or heterogeneous integration. III-V materials such as Gallium Arsenide (GaAs) and Indium Phosphide (InP) are popular material choices for these laser diodes due to their direct bandgaps and high efficiency. I will present optoelectronic characterization of several laser diodes, and a method for using silver epoxy to bond these laser diodes to silicon dies and compare behavior before and after bonding. Additionally, I will talk about the design of the metasurfaces and their beam deflection properties for the solid-state LiDAR systems.
Biography: Dr. Demirbas received her BS in physics from Bogazici University, Istanbul, Turkey where she also earned an MS degree in Physics with a thesis title of “Laser Assisted Growth of Silicon Nanostructures”. She then received an MS degree in Physics from Brandeis University, with a thesis titled of “Photo-Activated Langmuir Monolayers as Active Polar Fluids”. She later joined Photonics Center in Physics & Applied Physics Department in University of Massachusetts, Lowell and she earned her PhD degree with the thesis of “Optimization of III-V Semiconductor Lasers and Their Integration Process for Integrated Photonics and Sensing Application.”
She joined Bridgewater State University in 2019 as an Assistant Professor and has been developing the Photonics and Optics Engineering BS Program and teaching the PHOE courses and labs. In her semiconductor laser characterization research group, she is focusing on III-V Semiconductor Laser Characterization, Integration of III-V Lasers with Silicon Photonics Chips, Silicon Phase Arrays, Light Manipulation with Metasurfaces, and MEMS LiDAR. She has been active member of Optica and IEEE.
The Seminars is open to the public free of charge.
For further information, please contact Dr. Yifei Li via email at yifei.li@umassd.edu.
Lester W. Cory Conference Room, Science & Engineering Building (SENG), Room 213A
Yifei Li
508.999.8841
yifei.li@umassd.edu