| Surface Emitting THz Wave Parametrical Oscillator Using MgO：LiNbO3 |
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| 引用本文： | 张显斌 施卫 T. Ikari H. Ito. Surface Emitting THz Wave Parametrical Oscillator Using MgO：LiNbO3[J]. 中国物理快报, 2007, 24(11): 3153-3156 |
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| 作者姓名： | 张显斌 施卫 T. Ikari H. Ito |
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| 作者单位： | [1]Department of Physics, Xi＇an University of Technology, Xi＇an 710048 [2]Photo Dynamics Research Center, RIKEN, 519-1399 Aramaki-Aoba, Sendai 980-8577, Japan |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10390160, 10376025 and 60771053, and the Natural Science Foundation of Shaanxi Province under Grant No 2005A03. The authors thank C. Takyu for coating the crystal surface and T. Shoji for polishing the crystals. |
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| 摘 要： | Room-temperature operation terahertz （THz） wave source is demonstrated using three MgO：LiNbO3 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 103 pJ/pulse at 1.5 THz. The noncoilinear 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 Mx^2 = 1.15, Mx^2 = 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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| 关 键 词： | 温度控制 波长参数 晶体 光波 |
| 收稿时间： | 2007-07-24 |
Surface Emitting THz Wave Parametrical Oscillator Using MgO:LiNbO |
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| ZHANG Xian-Bin,SHI Wei,T. Ikari,H. Ito. Surface Emitting THz Wave Parametrical Oscillator Using MgO:LiNbO[J]. Chinese Physics Letters, 2007, 24(11): 3153-3156 |
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| Authors: | ZHANG Xian-Bin SHI Wei T. Ikari H. Ito |
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| Affiliation: | Department of Physics, Xi'an University of Technology, Xi'an 710048Photo Dynamics Research Center, RIKEN, 519-1399 Aramaki-Aoba, Sendai 980-8577, Japan |
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| Abstract: | Room-temperature operation terahertz (THz) wave source is demonstrated using three MgO:LiNbO3 crystals which have a noncollinear arrangement. The experimental results show that the THz wave can be tunable from 0.8THz to 3.0THz, and the peak energy output is 103pJ/pulse at 1.5THz. 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 Mx2=1.15,Mz2=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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| Keywords: | 42.65.Yj 42.25.Bs 42.60.Jf |
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