Noncascading THz-wave parametric oscillator synchronously pumped by mode-locked picosecond Ti:sapphire laser in doubly-resonant external cavity
作者： Yuma Takida , Shingo Maeda , Tatsuya Ohira , Hiroshi Kumagai , Shigeki Nashima
DOI: 10.1016/J.OPTCOM.2011.04.072
关键词: Intensity (physics) 、 Optoelectronics 、 Sapphire 、 Laser 、 Ti:sapphire laser 、 Terahertz radiation 、 Parametric oscillator 、 Signal 、 Optics 、 Picosecond 、 Materials science 、 Physical and Theoretical Chemistry 、 Electrical and Electronic Engineering 、 Atomic and Molecular Physics, and Optics 、 Electronic, Optical and Magnetic Materials
摘要: Abstract A noncascading terahertz (THz) wave parametric oscillator synchronously pumped by a mode-locked picosecond Ti:sapphire laser whose average power was less than 1 W demonstrated with noncollinear phase-matching MgO:LiNbO3 crystal in an external enhancement cavity doubly resonant for both pump (780 nm) and signal (781–784 nm) waves. In the cavity, which enhanced so as to reduce pumping threshold of processes, could also resonate thus be simultaneously, resulting THz output at approximately 0.9 THz idler wave. The novel dual waves reduced intensity 50 MW/cm2, much lower that conventional externally crystal.
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