International Journal of Terahertz Science and Technology
  TST >> Vol.3, No.3, September 2010: PP. 143-148

The Theoretical Study on THz Frequency Comb Generation via Optical Rectification

Degang Xu *, Pengxiang Liu, Da Lv, Yingjin Lv, Kai Zhong, Yuye Wang, Jianquan Yao
The Institute of Laser & OptoelectronicsThe College of Precision Instruments and Opto-Electronic Engineering ,Tianjin University
Tianjin, 300072, P. R. China
Key Laboratory of Opto-electronics Information and Technical Science (Ministry of Education), Tianjin University
Tianjin 300072, P. R. China
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Abstract: In this paper, we proposed a method for THz comb generation via surface-emitted optical rectification (OR) of ultra-short laser pulse in periodically poled lithium niobate (PPLN). The mechanism of this phenomenon is spectral interference between early and late THz pulses emitted by one fs-pulse. The generation of THz comb was analyzed both in frequency- and time-domain based on radiating antenna model. The figures of spectrum and waveform of the calculated electric field were presented. Our calculation indicated that THz combs generated by this method cover a large bandwidth and have a wide free spectral range.

Keywords: Optical Rectification, Frequency Comb, Terahertz.

Received: 2009-12-5

Accepted: 2010-8-3

Published: 2010-9-29

Acknowledgments: This work was supported by National Natural Science Foundation (NSFC) (60801017); The Research Fund for the Doctoral Program of Higher Education (20070420118); Tianjin Municipal Primary application and Frontier Technology Research Plan, China (07JCYBJC06200); the National Basic Research Program of China (2007CB310403)

.Degang Xu was born in JiaoNan, Qingdao City, Shandong province in 1974. He received the Bachelor degree in applied electronic technology and Master degree in physical electronics in 1998 and 2001, respectively, both from Qufu normal University, Shandong, China, and the Ph.D. degree in physical electronics from Tianjin University, Tianjin, China, in 2005.

In 2005, he joined Tianjin University as an Assistant of precision instruments and opto-electronic engineering, Tianjin, China. In 2006, he was appointed as visiting scholar at Manchester University, UK. From 2007 to now, he is an Associate Professor. He has published more than 40 refereed journal articles in optoelectronics, nonlinear optics, and high power laser. His current research interests include terahertz generation, amplification and detection, and their applications.

Cite this article:
Degang Xu, Pengxiang Liu, Da Lv, Yingjin Lv, Kai Zhong, Yuye Wang, Jianquan Yao. The Theoretical Study on THz Frequency Comb Generation via Optical Rectification[J]. International Journal of Terahertz Science and Technology, 2010, Vol.3, No.3: 143-148.  DOI:10.11906/TST.143-148.2010.09.14




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