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Surface‐enhanced hyper Raman scattering in silver colloidal solutions
Author(s) -
Kneipp Harald,
Kneipp Katrin
Publication year - 2005
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1333
Subject(s) - raman scattering , crystal violet , picosecond , raman spectroscopy , excitation , infrared , chemistry , colloidal crystal , molecule , crystal (programming language) , scattering , colloid , analytical chemistry (journal) , materials science , optics , laser , physics , medicine , organic chemistry , pathology , quantum mechanics , chromatography , computer science , programming language
We report surface‐enhanced hyper Raman scattering (SEHRS) from molecules in silver colloidal solutions using high repetition rate mode‐locked picosecond excitation at 1064 nm. SEHRS was is studied under non‐resonant and resonant conditions by choosing adenine and crystal violet as test molecules. Compared with its SERS spectrum, the SEHRS spectrum of adenine displays strong ‘new’ lines, which, in agreement with theory, in most cases also show up in the infrared absorption spectrum. We also explore the capability of SEHRS for trace detection and demonstrate detection and identification of crystal violet based on its SEHRS signals down to nanomolar concentrations. Copyright © 2005 John Wiley & Sons, Ltd.