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�?herenkov phase-matched monochromatic THzwave generation using difference frequency generation with a lithium niobate crystal

2008; Optica Publishing Group; Volume: 16; Issue: 10 Linguagem: Inglês

10.1364/oe.16.007493

1094-4087

Koji Suizu, Takayuki Shibuya, Takuya Akiba, Toshihiro Tutui, Chiko Otani, Kodo Kawase,

Photonic and Optical Devices

We demonstrated a Cherenkov phase-matching method for monochromatic THz-wave generation using the difference frequency generation process with a lithium niobate crystal, which resulted in high conversion efficiency and wide tunability. We successfully generated monochromatic THz waves across the range 0.2-3.0 THz. We obtained efficient energy conversion in the low frequency region below 0.5 THz, and achieved a flat tuning spectrum by varying the pumping wavelength during THz-wave tuning.