Red-shifted solitons for coherent anti-Stokes Raman scattering microspectroscopy in a polarization-maintaining photonic crystal fiber

Yuan, Jinhui, Sang, Xinzhu, Wu, Qiang, Zhou, Guiyao, Li, Feng, Yu, Chongxiu, Wang, Kuiru, Yan, Binbin, Han, Ying, Tam, Hwa Yaw and Wai, Ping-kong Alexander (2015) Red-shifted solitons for coherent anti-Stokes Raman scattering microspectroscopy in a polarization-maintaining photonic crystal fiber. Optical Engineering, 54 (5). 056107. ISSN 0091-3286

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Official URL: http://dx.doi.org/10.1117/1.OE.54.5.056107

Abstract

An alternative light source for coherent anti-Stokes Raman scattering (CARS) microspectroscopy based on red-shifted solitons in a polarization-maintaining photonic crystal fiber (PM-PCF) is experimentally demonstrated. By coupling femtosecond pulses into the anomalous dispersion region of the fundamental mode of a PM-PCF along the slow and fast axes, the red-shifted solitons generated can be used as the Stokes beams when the pump pulses are chosen as the pump beams. Through the process of red-shift, the frequency differences of the pump-Stokes beams are tunable in the ranges of 0 to 4068  cm−1 and 0 to 4594  cm−1, respectively. Moreover, because of the well maintained polarization states of the pump and Stokes beams and the high output powers of the solitons, CARS microspectroscopy using the proposed source will have a high signal-to-noise ratio and short data acquisition time. CARS microspectroscopy based on the proposed all-fiber light source can be used for studying a wide range of vibrational Raman spectra.

Item Type: Article
Uncontrolled Keywords: CARS tomography, photonic crystal fibers, polarization, light sources
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Ay Okpokam
Date Deposited: 09 Jun 2015 08:32
Last Modified: 24 Oct 2017 08:52
URI: http://nrl.northumbria.ac.uk/id/eprint/22779

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