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X.-C. Zhang The Institute of Optics University of Rochester Rochester, NY 12627-0186 USA Date: June 21, 2013 Time: 3:00pm-4:30pm Place: Conference Room 338, the 3rd Academic Building, Yuquan Campus THz photonics: bridging the “gap” and beyond Abstract: Historically, THz technologies were mainly used within the astronomy community for searching far-infrared radiation (cosmic background), and the laser fusion community for the diagnostics of plasmas. Since the first demonstration of THz wave time-domain spectroscopy in the late 80’s, there has been a series of significant advances (particularly in recent years) on the development of intense sources and sensitive detectors. THz photonics involves the interaction of intense femtosecond laser pulses with matters (solid, liquid, air, and plasma). I will review THz wave generation and detection techniques using air as emitter and sensor. Also, 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. I will also highlight their potentials, including for the national security applications. Biography: Dr. Xi-Cheng Zhang – Director and Parker Givens Chair at The Institute of Optics, University of Rochester. Dr. Zhang was the Director of the Center for THz Research at Rensselaer Polytechnic Institute. He is a Lifetime Fellow of IEEE, the Optical Society of America, and the American Physics Society. His recent awards include 2012 OSA William F. Meggers Award; 2011 IEEE Photonics Society William Streifer Scientific Achievement Award; and 2009 Rensselaer William H. Wiley Award.