Historically, terahertz (or T-ray) technologies were mainly used by the astronomy community for detecting the cosmic background left behind after the Big Bang. Since the first demonstration of terahrtz wave time-domain spectroscopy in the late 80’s, there has been a series of significant recent advances in intense terahertz sources and sensitive detectors providing new opportunities for understanding the fundamental science of the terahertz frequency range. Now, this region of the electromagnetic spectrum from 0.3 to 10 THz (ie. 1 mm – 30 μm wavelength) is a frontier area for research in physics, chemistry, biology, materials science and medicine. I will review terahertz wave generation and detection techniques using lasers. I will also highlight their potential, including national security applications. I will explore the remaining challenges and future opportunities for this rapidly evolving area of research that transcends the “gap” once existing between optics and electronics.
About the Speaker
Professor Xi-Cheng Zhang is the recipient of the 2017 Selby Travelling Fellowship and will be presenting a series of Selby lectures across Australia. Professor Xi-Cheng Zhang’s research interests center around terahertz waves, also known as T-rays, which exist within a frequency range between microwave and infrared. His research is focused on the generation, detection, and applications of freespace terahertz beams with ultrafast optics.
Professor Xi-Cheng Zhang is M. Parker Givens Professor at The Institute of Optics, University of Rochester. A Fellow of AAAS, APS, IEEE, OSA, and SPIE, his recent awards include 2017 Albert Nelson Marquis Lifetime Achievement Award; 2017 Australian Academy of Science Selby Fellowship; 2014 International Society of IRMMWTHz Button Prize; 2012 OSA William F. Meggers Award; 2011 IEEE Photonics Society William Streifer Scientific Achievement Award; and 2009 Rensselaer William H. Wiley Award. He holds 14 professorships in foreign countries, 29 US patents, has authored or co-authored over 400 refereed scientific papers. Professor Zhang is the Editor-in-Chief of Optics Letters.
Date: 11 December 2017
Time: 3:00pm – 4:00pm
Venue: Napier Building, Level 1, Room 102, The University of Adelaide