Utilizing dynamic laser speckle to probe nanoscale morphology evolution in nanoporous gold thin films

Christopher A.R. Chapman, Sonny Ly, Ling Wang, Erkin Seker, Manyalibo J. Matthews

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

This paper demonstrates the use of dynamic laser speckle autocorrelation spectroscopy in conjunction with the photothermal treatment of nanoporous gold (np-Au) thin films to probe nanoscale morphology changes during the photothermal treatment. Utilizing this spectroscopy method, backscattered speckle from the incident laser is tracked during photothermal treatment and both the characteristic feature size and annealing time of the film are determined. These results demonstrate that this method can successfully be used to monitor laserbased surface modification processes without the use of ex-situ characterization.

Original languageEnglish (US)
Pages (from-to)5323-5333
Number of pages11
JournalOptics Express
Volume24
Issue number5
DOIs
StatePublished - Mar 7 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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