Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.4819236
Title: Radially polarized tip-enhanced near-field coherent anti-Stokes Raman scattering microscopy for vibrational nano-imaging
Authors: Lin, J.
Zi Jian Er, K.
Zheng, W. 
Huang, Z. 
Issue Date: 19-Aug-2013
Source: Lin, J., Zi Jian Er, K., Zheng, W., Huang, Z. (2013-08-19). Radially polarized tip-enhanced near-field coherent anti-Stokes Raman scattering microscopy for vibrational nano-imaging. Applied Physics Letters 103 (8) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4819236
Abstract: We report a radially polarized tip-enhanced near-field coherent anti-Stokes Raman scattering (RP-TE-CARS) microscopy technique for high-contrast vibrational imaging of subcellular organelles at nano-scale resolutions. The radially polarized pump and Stokes laser beams are tightly focused onto the sample while a gold-coated metallic probe is placed at the upper surface of the sample to enhance the electric field and CARS signals. The back-scattered CARS signal is measured with the gold-coated nano-tip being stationary at the focal region of laser beams. The RP-TE-CARS signal is ∼6-fold higher than that using linearly polarized laser excitation. We demonstrate the good performance of the RP-TE-CARS technique developed by imaging sub-micron polystyrene beads and mitochondria at nano-scale resolutions. © 2013 AIP Publishing LLC.
Source Title: Applied Physics Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/67250
ISSN: 00036951
DOI: 10.1063/1.4819236
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