Enhanced intermodal four-wave mixing for visible and near-infrared wavelength generation in a photonic crystal fiber

Yuan, Jinhui, Sang, Xinzhu, Wu, Qiang, Zhou, Guiyao, Li, Feng, Zhou, Xian, Yu, Chongxiu, Wang, Kuiru, Yan, Binbin, Han, Ying, Tam, Hwa Yaw and Wai, Ping-kong Alexander (2015) Enhanced intermodal four-wave mixing for visible and near-infrared wavelength generation in a photonic crystal fiber. Optics Letters, 40 (7). pp. 1338-1341. ISSN 0146-9592

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Abstract

We demonstrate experimentally an enhanced intermodal four-wave mixing (FWM) process through coupling positively chirped femtosecond pulses into the deeply normal dispersion region of the fundamental mode of an in-house fabricated photonic crystal fiber (PCF). In the intermodal phase-matching scheme, the energy of the pump waves at 800 nm in the fundamental mode is efficiently converted into the anti-Stokes waves around 553 nm and the Stokes waves within the wavelength range of 1445–1586 nm in the second-order mode. The maximum conversion efficiency of Nas and Ns of anti-Stokes and Stokes waves can be up to 21% and 16%, respectively. The Stokes frequency shift Ω is 5580  cm−1. The fiber bending and intermodal walk-off effect of pulses do not have significant influence on the nonlinear optical process.

Item Type:	Article
Subjects:	F300 Physics
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Ay Okpokam
Date Deposited:	11 May 2015 12:20
Last Modified:	12 Oct 2019 19:20
URI:	http://nrl.northumbria.ac.uk/id/eprint/22434

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