High-power picosecond terahertz-wave generation in photonic crystal fiber via four-wave mixing

Huihui Wu; Hongjun Liu; Nan Huang; Qibing Sun; Jin Wen

doi:10.1364/AO.50.005338

High-power picosecond terahertz-wave generation in photonic crystal fiber via four-wave mixing

Appl Opt. 2011 Sep 20;50(27):5338-43. doi: 10.1364/AO.50.005338.

Authors

Huihui Wu¹, Hongjun Liu, Nan Huang, Qibing Sun, Jin Wen

Affiliation

¹ State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, China.

PMID: 21947055
DOI: 10.1364/AO.50.005338

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 1.55 μm and a generation scheme is proposed. Using this method, THz waves can be generated in the frequency range of 7.07-7.74 THz. Moreover, peak power of 2.55 W, average power of 1.53 mW, and peak conversion efficiency of more than -66.65 dB at 7.42 THz in a 6.25 cm long fiber are realized with a pump peak power of 2 kW.