Spectrally-isolated violet to blue wavelength generation by cascaded degenerate four-wave mixing in a photonic crystal fiber

Jinhui Yuan, Zhe Kang, Feng Li, Xianting Zhang, Guiyao Zhou, Xinzhu Sang, Qiang Wu, Binbin Yan, Xian Zhou, Liang Wang, Kangping Zhong, Kuiru Wang, Chongxiu Yu, Hwa Yaw Tam, P. K. A. Wai

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Abstract

Generation of spectrally-isolated wavelengths in the violet to blue region based on cascaded degenerate four-wave mixing (FWM) is experimentally demonstrated for the first time in a tailor-made photonic crystal fiber (PCF), which has two adjacent zero dispersion wavelengths (ZDWs) at 696 and 852 nm in the fundamental mode. The influences of the wavelength λp and the input average power Pav of the femtosecond pump pulses on the phase-matched frequency conversion process are studied. When femtosecond pump pulses at λp of 880, 870, and 860 nm and Pav of 500 mW are coupled into the normal dispersion region close to the second ZDW, the first anti-Stokes waves generated near the first ZDW act as a secondary pump for the next FWM process. The conversion efficiency ηas2 of the second anti-Stokes waves, which are generated at the violet to blue wavelengths of 430, 456, and 472 nm, are 4.8, 6.48, and 9.66%, for λp equals 880, 870, and 860 nm, respectively.
Original languageEnglish
Pages (from-to)2612-2615
JournalOptics Letters
Volume41
Issue number11
DOIs
Publication statusPublished - 26 May 2016

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