22 May 2015 Red-shifted solitons for coherent anti-Stokes Raman scattering microspectroscopy in a polarization-maintaining photonic crystal fiber
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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  cm1 and 0 to 4594  cm1, 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.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jinhui Yuan, Xinzhu Sang, Qiang Wu, Guiyao Zhou, Feng Li, Chongxiu Yu, Kuiru Wang, Binbin Yan, Ying Han, Hwa-Yaw Tam, Ping Kong Alexander Wai, "Red-shifted solitons for coherent anti-Stokes Raman scattering microspectroscopy in a polarization-maintaining photonic crystal fiber," Optical Engineering 54(5), 056107 (22 May 2015). https://doi.org/10.1117/1.OE.54.5.056107 . Submission:
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