High efficiency terahertz-wave photonic crystal fiber optical parametric oscillator.
High efficiency terahertz-wave photonic crystal fiber optical parametric oscillator.
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DOI：
10.1364/ao.51.005579
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发表时间：
2012-08
期刊：
影响因子：
1.9
通讯作者：
Shaopeng Li;Hongjun Liu;N. Huang;Qibing Sun;Xuefeng Li
中科院分区：
文献类型：
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作者：
Shaopeng Li;Hongjun Liu;N. Huang;Qibing Sun;Xuefeng Li
提出了一种利用光子晶体光纤（PCF）在光纤参量振荡器（FOPO）中通过简并四波混频（FWM）产生相位匹配太赫兹（THz）波的方法。当泵浦波长处于正常群速度色散区时，可以实现理想的相位匹配。产生的太赫兹波可以通过改变泵浦波长从4.7578调谐到5.9015太赫兹。当泵浦光峰值功率为2000 W时，在4.675 μm处获得了27.38 W的5.9015 THz峰值功率，转换效率为1.37%。
We theoretically propose phase matched terahertz (THz)-wave generation via degenerate four-wave mixing (FWM) in a fiber optical parametric oscillator (FOPO) with our newly designed photonic crystal fiber (PCF). Perfect phase matching is realized when we locate the pump wavelength in the normal group-velocity dispersion (GVD) regime. The generated THz-wave can be tuned from 4.7578 to 5.9015 THz by varying the pump wavelength. Moreover, peak power of 27.38 W at 5.9015 THz with conversion efficiency of 1.37% is realized when the pump peak power of 2000 W is at 4.675 μm in our FOPO.