Surface-enhanced hyper-Raman spectra and enhancement factors for three SERS chromophores. SEHRS spectra on Ag films at pulse energies below 2 pJ

Journal of the American Chemical Society
Weinan Leng, Anne Myers Kelley

Abstract

Hyper-Raman scattering, the nonlinear (two-photon excited) analogue of ordinary Raman scattering, is usually considered to be a weak process that requires high-energy pulsed laser excitation. The sensitivity can be improved greatly by making use of two-photon electronic resonance and/or electromagnetic field enhancement on metal nanoparticle surfaces. Here we demonstrate that hyper-Raman spectra can be obtained from organic dyes on silver colloidal nanoparticle films at laser powers below 1 mW of average power (pulse energies below 2 pJ). These results open the door to exploiting the potential advantages of hyper-Raman scattering for analytical applications.

Citations

Feb 25, 2011·Chemical Reviews·Seth M MortonLasse Jensen
Apr 30, 2008·Chemical Society Reviews·Lasse JensenGeorge C Schatz
Apr 30, 2008·Chemical Society Reviews·Janina KneippKatrin Kneipp
Jan 9, 2010·Annual Review of Physical Chemistry·Anne Myers Kelley
Mar 1, 2012·The Journal of Chemical Physics·Daniel W Silverstein, Lasse Jensen
Aug 17, 2010·The Journal of Chemical Physics·Nicholas ValleyGeorge C Schatz
Feb 16, 2010·The Journal of Chemical Physics·David J Masiello, George C Schatz
Nov 8, 2006·Proceedings of the National Academy of Sciences of the United States of America·Janina KneippKatrin Kneipp
Dec 1, 2006·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Duncan LowNarahari S Pujar
Apr 20, 2016·Annual Review of Physical Chemistry·Dhabih V ChulhaiLasse Jensen
Oct 30, 2016·Journal of Chemical Theory and Computation·Zhongwei HuLasse Jensen
May 12, 2016·Physical Chemistry Chemical Physics : PCCP·Marina GühlkeJanina Kneipp
Dec 24, 2013·Chemical Communications : Chem Comm·H K Turley, J P Camden
May 23, 2017·Chemical Society Reviews·Fani MadzharovaJanina Kneipp

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