Surface Emitting THz Wave Parametrical Oscillator Using MgO:LiNbO3

ZHANG Xian-Bin; SHI Wei; T. Ikari; H. Ito

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Surface Emitting THz Wave Parametrical Oscillator Using MgO:LiNbO3

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Room-temperature operation terahertz (THz) wave source is demonstrated using three MgO:LiNbOz crystals which have a noncollinear arrangement. The experimental results show that the THz wave can be tunable from 0.8 THz to 3.0 THz, and the peak energy output is 103pJ/pulse at 1.5 THz. The noncollinear cavity configuration makes the THz beam have Gaussian-like spatial distribution, small divergence angle, perpendicularly eradiated from the crystal surface. The beam quality factor M2 is measured to be M2 = 1.15, M2 = 1.25 for characterizing the THz wave beam. Experiments also show that the THz beam can be focused by using a polyethylene lens, and the focal spot size is close to the diffraction limit.

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《中国物理快报：英文版》 |2007年第11期|3153-3156|共4页
作者
ZHANG Xian-Bin; SHI Wei; T. Ikari; H. Ito;
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Department of Physics, Xi'an University of Technology, Xi'an 710048Received 2007-07-24;

Department of Physics, Xi'an University of Technology, Xi'an 710048Received 2007-07-24;

Photo Dynamics Research Center, RIKEN, 519-1399 Aramaki-Aoba, Sendai 980-8577, Japan;

Photo Dynamics Research Center, RIKEN, 519-1399 Aramaki-Aoba, Sendai 980-8577, Japan;

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Surface Emitting THz Wave Parametrical Oscillator Using MgO:LiNbO3

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