Collinear phase-matched terahertz-wave generation in GaP crystal using a dual-wavelength optical parametric oscillator
Collinear phase-matched terahertz-wave generation in GaP crystal using a dual-wavelength optical parametric oscillator
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DOI：
10.1063/1.1751238
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发表时间：
2004-06
影响因子：
3.2
通讯作者：
T. Taniuchi;H. Nakanishi
中科院分区：
文献类型：
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作者：
T. Taniuchi;H. Nakanishi
对利用GaP晶体共线差频产生可调谐太赫兹波进行了理论和实验研究。通过计算相位匹配条件，确定了GaP晶体有效差频产生的波长范围和长度。采用双波长光学参量振荡器，利用共线相位匹配差频产生了0.5 ~ 4.5THz的THz波，波长范围为930-1000 nm。当泵浦能量为1.2mJ/pulse时，在1.9THz处获得了5.3nJ/pulse的最大THz输出能量（峰值功率为0.66W）。
Tunable terahertz (THz)-wave generation in GaP crystal was theoretically and experimentally investigated using collinear difference frequency mixing. The wavelength range and length of GaP crystal for efficient difference frequency generation (DFG) were determined by calculating the phase-matching conditions. THz waves from 0.5 to 4.5 THz were generated by collinear phase-matched DFG using a dual-wavelength optical parametric oscillator with two KTiOPO4 crystals in the range of 930–1000 nm. A maximum THz output energy of 5.3 nJ/pulse (peak power of 0.66 W) at 1.9 THz was obtained when the pump energy was 1.2 mJ/pulse.