THz-wave parametric oscillator with a surface-emitted configuration.
THz-wave parametric oscillator with a surface-emitted configuration.
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DOI：
10.1364/oe.14.001604
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发表时间：
2006-02
期刊：
影响因子：
3.8
通讯作者：
T. Ikari;Xianbin Zhang;H. Minamide;Hiromasa Ito
中科院分区：
文献类型：
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作者：
T. Ikari;Xianbin Zhang;H. Minamide;Hiromasa Ito
我们提出了一种用于太赫兹波参量振荡器的表面发射腔结构，该结构允许太赫兹波垂直于晶体表面发射，而无需任何输出耦合器。振荡的闲频波和泵浦波在单个谐振腔中的非线性晶体表面反射，满足非共线相位匹配条件。辐射的太赫兹波具有高斯分布。测量的光束质量因子（M（2））在水平和垂直方向上分别为1.15和1.25。测得的调谐范围为0.8-2.74 THz。演示了使用测试图案的透射成像测试。
We propose a surface-emitted cavity configuration for a terahertz-wave parametric oscillator that allows THz wave emission perpendicular to the crystal surface without any output coupler. The oscillating idler and pump waves are reflected at the surface of a nonlinear crystal in a single resonance cavity, satisfying the noncollinear phasematching condition. The radiated THz wave has a Gaussian profile. The measured beam quality factors (M(2)) were 1.15 and 1.25 in the horizontal and vertical directions, respectively. The measured tunable range was 0.8-2.74 THz. A test of transmission imaging using a test pattern was demonstrated.