"Semiconductor Laser Reliability and Materials Engineering"

Robert W. Herrick, Ph.D. , Laser Reliability Engineer, Intel

January 18th (Thursday), 10:00am
Elings Hall, Room 1601

Semiconductor lasers power the cloud data centers, and our fiber optic communication infrastructure. And it’s being constantly updated with a new generation that’s twice as fast every 3 years. But how do companies know that their next generation of infrastructure will last for 10 years or more, when they only have a year or two for development and qualification? In this lecture, we’ll start by going over some case studies of the consequences of making a mistake in the reliability qualification, and then go into how the testing is done. We’ll discuss the physics of common laser failure mechanisms, for today’s lasers, grown on InP and GaAs substrates. In the second half of the talk, we’ll focus more on applications with heteroepitaxy, and why no quantum well on silicon lasers have ever been made with good performance and reliability. We’ll finish by sharing some of the UCSB / Intel work on quantum dot laser reliability, as well as defect trapping strategies that would work with other approaches, and materials that are resistant to degradation.

About Robert W. Herrick, Ph.D. :

photo of Bob HerrickDr. Herrick is responsible for laser reliability at Intel’s Silicon Photonic Product Division, and has worked for Intel since 2013. After obtaining an MSEE at the University of Illinois, his career started at McDonnell Douglas, working on early OEIC and high power laser R&D, where he did device modelling, mask design, and process development. After gaining an interest in reliability physics from the late Dr. Robert G. Waters, Dr. Herrick went to UCSB, and did the first studies of VCSEL Degradation for his Ph.D. dissertation with Professor Pierre Petroff. In the past 20 years, Dr. Herrick has specialized in semiconductor laser reliability and failure analysis, and has written many of the most cited papers and invited book review chapters on the subject. He has worked as a laser reliability engineer for many of the large fiber-optics companies in Silicon Valley, including HP / Agilent, Emcore, Finisar, and JDSU / Lumentum.

Hosted by: Professor John Bowers