A Continuously Tunable Ring-Cavity THz-Wave Parametric Oscillator
A Continuously Tunable Ring-Cavity THz-Wave Parametric Oscillator
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连续可调环腔太赫兹波参量振荡器
DOI：
10.2184/lsj.29.744
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Hiromasa Ito
中科院分区：
文献类型：
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作者：
H. Minamide;K. Kawase;K. Imai;A. Sato;Hiromasa Ito
我们展示了一个广泛的可调谐太赫兹（THz）波参量振荡器（TPO）的环形腔配置使用一种新的频率调谐方法，包括旋转一个单一的镜子形成的腔。TPO由三镜环形腔中的非线性光学MgO：LiNbO 3晶体组成。通过调节反射镜，实现了太赫兹波在0.93 ~ 2.7THz范围内的连续调谐。单硅棱镜耦合器在1.3THz处输出的最大THz波为69.6pJ/pulse。测量HCl气体的吸收以检查调谐可控性。TPO的高性能从与已知的中心吸收线一致的测量光谱的透射率下降中得到证实。
We demonstrate a widely tunable terahertz (THz) -wave parametric oscillator (TPO) in a ring cavity configuration using a novel frequency-tuning method involving rotating a single mirror forming the cavity. The TPO consisted of a nonlinear optical MgO: LiNbO3 crystal in a three-mirror ring cavity. We obtained continuous tuning of THz-wave in the 0.93 to 2.7 THz range by adjusting the mirror. The maximum THz-wave output of 69.6 pJ/pulse at 1.3 THz was coupled out from a single Si prism coupler. The absorption of HCl gas was measured in order to check the tuning controllability. The high performance of the TPO was confirmed from the transmission dip of the measured spectrum in agreement with the known center absorption lines.