Tunable Narrow-band Terahertz Generation based on Quasi Phase Matching Structures by Femtosecond Pulses

Nan Ei Yu,Chul Kang,Yeung Lak Lee,Kenji Kitamura,Shunji Takekawa,Chul-Sik Kee,Changsoo Jung,Jongmin Lee,Do-Kyeong Ko,Bong-Ahn Yu

doi:10.1109/cleopr.2007.4391312

Tunable Narrow-band Terahertz Generation based on Quasi Phase Matching Structures by Femtosecond Pulses

Nan Ei Yu, Chul Kang + Show 8 more

https://doi.org/10.1109/cleopr.2007.4391312

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Publication Date: Aug 1, 2007

Affiliation: Gwangju Institute of Science and Technology, National Institute for Materials Science

#Quasi-phase Matching Structures #Difference Frequency Generation + Show 8 more

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Abstract

Terahertz generation was demonstrated around 1~3 THz via difference frequency generation (DFG) using femtosecond pulses in a periodically poled lithium niobate (PPLN) and stoichiometric lithium tantalate (PPSLT) crystals. Two different types of terahertz radiation, forward and backward, could be generated in the quasi-phase matching (QPM) structures by the DFG process. A backward terahertz radiation was measured around 1.3 THz at PPLN and 3 THz at PPSLT. The frequency of terahertz radiation can be controlled by varying the QPM structures.

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