Xi-Cheng Zhang 
J. Erik Jonsson ’22 Professor of Science; Professor of Physics; Professor of Electrical, Computer & System Engineering
Education:
Ph.D., Physics, Brown University, 1986.
M.S., Physics, Brown University, 1983.
B.S., Physics, Peking University, Beijing, China, 1982.
Career Highlights:
J. Erick Zhang has received six patents, ten patents pending and numerous awards including the National Science Foundation’s CAREER award, Research Corporation’s Cottrell Award, and China’s Outstanding Scholar Award. He is a Fellow of IEEE, the Optical Society of America, and was elected a Fellow of the American Physics Society in 2002. He joined RPI in 1992 and has held teaching positions at Xiamen University, the Chinese Academy of Science and the Shanghai University of Science and Technology.
Research Interests:
Terahertz Optics Sensing
Zhang’s work with time-domain THz spectroscopy systems holds promise for diagnostics of materials such as semiconductors and biomolecules. THz time-domain spectroscopy uses short pulses of broadband THz radiation, typically generated using ultrafast laser pulses. The transmitted THz electric field is measured coherently, which provides both high sensitivity and time-resolved phase information.
Terahertz Optics Imaging
Zhang’s interest in THz wave imaging is a result of the availability of phase-sensitive spectroscopic images. These images, called “functional images,” are ideal for dry dielectric substances including paper, plastics, and ceramics. Zhang’s research centers on two-dimensional THz wave imaging through free-space electro-optic detection and on THz ray, or T-ray, imaging for probing the dielectric properties of three-dimensional structures.
Selected Publications:
Xu Xie, Jingzhou Xu, and
X.-C. Zhang
, “Terahertz generation from CdTe crystal characterized by excitation frequency,” Optics Letters, 31 978 (2006).
Xu Xie, Jianming Dai, and
X.-C. Zhang
, “Coherent control of THz wave generation in ambient air,” Physics Review Letters, 96 075005 (2006).
J.Z. Xu and
X.-C. Zhang
, “THz wave reciprocal imaging,” Applied Physics Letters, 88, 151107 (2006).
Lantao Guo, Ying Hu, Yan Zhang, Cunlin Zhang, Yunqing Chen and X.–C. Zhang, “Vibrational spectrum of γ-HNIW investigated using terahertz time-domain spectroscopy,” Optical Express, 14, 3654, (2006).
Jianming Dai,
Xu Xie
, and
X.-C. Zhang
, “Detection of broadband terahertz waves with laser-induced plasma in gases,” Physics Review Letters, 97, 103903 (2006).
Hua Zhong, Albert Redo-Sanchez, and
X.-C. Zhang
, “Identification and classification of chemicals using terahertz reflective spectroscopic focal-plane imaging system,” Optical Express 14, 9130-9141, (2006).
Hua Zhong, Nicholas Karpowicz, and
X.-C. Zhang
, “Terahertz emission profile from laser-induced air plasma," Applied Physics Letters 88, 261103 (2006)
Haibo Liu and
X.-C. Zhang
, "Dehydration kinetics of D-glucose monohydrate studied using THz time-domain spectroscopy", Chemical Physics Letters 429, 229–233 (2006).
Hai-Bo Liu, Yunqing Chen, Glenn J. Bastiaans, and X.-C. Zhang, “Detection and identification of explosive RDX by THz diffuse reflection spectroscopy,” Optics Express, 14, 415 (2006).
Contact:
(518) 276-3079
zhangxc@rpi.edu
Home Page: http://www.rpi.edu/~zhangxc
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