CREOL Room 103
Thursday, April 21, 2016
TOMORROW! Seminar: “Research Trends in the Quantum Cascade Laser Field” by Dr. Arkadiy Lyakh, 4.22.16/12:00-1:00PM/ CREOL RM 103
Seminar: “Research Trends in the Quantum Cascade Laser Field” by Dr. Arkadiy Lyakh
CREOL Room 103
Dr. Arkadiy Lyakh
Band engineering is a very powerful technique for the design of novel semiconductor devices. Individual control of material composition (band gap), thickness, and doping level for each layer in a heterostructure offers unprecedented flexibility in optimizing device characteristics to a particular application. Band engineering will be discussed in the context of Quantum Cascade Lasers, or QCLs. These devices are revolutionizing infrared laser applications in spectroscopy, imaging, directed infrared countermeasures, and other defense and security areas. QCL design principles will be considered, along with their electronic, optical and thermal properties. Current research trends in the field will be covered, including optical power scaling, broadly tunable lasers with ultra-fast scanning rate, and QCL-based frequency combs.
Dr. Arkadiy Lyakh is an Assistant Professor at the NanoScience Technology Center at the University of Central Florida with a joint appointment in CREOL. His research interests are physics of intersubband transitions and carrier transport through multilayered semiconductor structures, low dimensional semiconductor devices, including Quantum Cascade Lasers (QCLs), and infrared spectroscopy.
Dr. Lyakh’s prior employment includes Pranalytica, Inc. where he served as Director of High Performance QCLs. At Pranalytica he led numerous government funded programs either as Principal Investigator or overall technical lead. Dr. Lyakh is the inventor of Pranalytica’s proprietary laser design principles that are widely utilized in the development of novel high performance structures. In addition to laser design, he also made key contributions in the areas of laser thermal management, coating, and packaging. Dr. Lyakh led the development and transition to production of the first multiwatt continuous wave QCLs in the MWIR and LWIR spectral regions, setting a number of world records in laser optical power and efficiency. He also led the development of novel broadly tunable devices with an ultra-rapid tuning rate for standoff detection and combustion diagnostics, as well as the first substrate-emitting QCLs and MWIR buried heterostructure QCL tree arrays for very high optical power infrared platforms.
For additional information:
Dr. Bahaa Saleh