Abstract

We demonstrate picosecond terahertz (THz)-wave generation via four-wave mixing in an octagonal photonic crystal fiber (O-PCF). Perfect phase-matching is obtained at the pump wavelength of 1.55μm and a generation scheme is proposed. Using this method, THz waves can be generated in the frequency range of 7.077.74THz. Moreover, peak power of 2.55W, average power of 1.53mW, and peak conversion efficiency of more than 66.65dB at 7.42THz in a 6.25cm long fiber are realized with a pump peak power of 2kW.

© 2011 Optical Society of America

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