Energy scalable terahertz-wave parametric oscillator using surface-emitted configuration

被引：23
|
作者：
Ikari, Tomofumi [1 ]
Guo, Ruixiang [1 ]
Minamide, Hiroaki [1 ]
Ito, Hiromasa [1 ,2 ]
机构：
[1] RIKEN Adv Sci Inst, Aoba Ku, Sendai, Miyagi 9800845, Japan
[2] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF THE EUROPEAN OPTICAL SOCIETY-RAPID PUBLICATIONS | 2010年 / 5卷
关键词：
terahertz-wave; parametric oscillation; surface emission; energy enhancement; SPECTROSCOPY; ENHANCEMENT; OUTPUT;
D O I：
10.2971/jeos.2010.10054
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We experimentally demonstrated the scalability of the terahertz (THz)-wave parametric oscillator by using a pump beam with a wide aperture and a high pulse energy. THz-wave absorption by the LiNbO3 crystal in the oscillator is substantially suppressed by employing a surface-emitting cavity configuration. We also improved the conversion efficiency by increasing the parametric interaction in the noncollinear phase-matching geometry. A pump depletion of 54% and a conversion efficiency of 0.9 x 10(-6) are achieved. A maximum THz output of 382 nJ/pulse was achieved at 1.46 THz using a 8.0 mm-diameter pump beam with a pulse energy of 465 mJ/pulse. [DOI: 10.2971/jeos.2010.10054]
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页数：4
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