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Wang Y, Liu X, Halpern AR, et al. Wide-field, surface-sensitive four-wave mixing microscopy of nanostructures. Appl Opt. 2012;51(16):3305-12doi: 10.1364/AO.51.003305.
Wang, Y., Liu, X., Halpern, A. R., Cho, K., Corn, R. M., & Potma, E. O. (2012). Wide-field, surface-sensitive four-wave mixing microscopy of nanostructures. Applied optics, 51(16), 3305-12. https://doi.org/10.1364/AO.51.003305
Wang, Yong, et al. "Wide-field, surface-sensitive four-wave mixing microscopy of nanostructures." Applied optics vol. 51,16 (2012): 3305-12. doi: https://doi.org/10.1364/AO.51.003305
Wang Y, Liu X, Halpern AR, Cho K, Corn RM, Potma EO. Wide-field, surface-sensitive four-wave mixing microscopy of nanostructures. Appl Opt. 2012 Jun 01;51(16):3305-12. doi: 10.1364/AO.51.003305. PMID: 22695564.
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Appl Opt. 2012 Jun 01;51(16):3305-12. doi: 10.1364/AO.51.003305.

Wide-field, surface-sensitive four-wave mixing microscopy of nanostructures.

Applied optics

Yong Wang, Xuejun Liu, Aaron R Halpern, Kyunghee Cho, Robert M Corn, Eric O Potma

Affiliations

  1. Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, USA.

PMID: 22695564 DOI: 10.1364/AO.51.003305

Abstract

We describe a wide-field four-wave mixing (FWM) microscope with imaging characteristics optimized for examining nanostructures. The microscope employs surface-plasmon polariton (SPP) excitation in a gold film to achieve surface-sensitive imaging conditions. The SPP surface fields boost the FWM efficiency by 2 orders of magnitude relative to the excitation efficiency of the evanescent fields at a bare glass surface. We demonstrate two excitation geometries that completely suppress the electronic FWM response of the metal film while allowing the far-field detection of FWM radiation from nanostructures at the interface. We obtained wide-field FWM images from individual carbon nanotubes and nanoclusters of neocyanine molecules at image acquisition times of 1 s, demonstrating the potential for background free, surface-enhanced FWM imaging of nanomaterials.

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