Measurement of surface diffusion by second harmonic diffraction from a monolayer grating

X. D. Zhu, T. Rasing, Yuen Ron Shen

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A novel method for surface diffusion measurements is introduced in which two pulsed laser beams intersecting on the surface under investigation are used to burn a monolayer grating by thermal desorption of an adsorbed molecular monolayer. Subsequently, diffraction of surface second-harmonic generation (SHG) from the grating is used to detect smearing of the grating due to surface diffusion of the adsorbed molecules. As a demonstration of the technique, surface diffusion of CO on Ni(111) has been measured, confirming the validity of the method. The technique is relatively simple and rather versatile and requires little data analysis. It can be easily adopted for measurements of anisotropic surface diffusion of molecules on all types of crystalline surface.

Original languageEnglish (US)
Title of host publicationQuantum Electron Laser Sci Conf
Editors Anon
Place of PublicationPiscataway, NJ, United States
PublisherPubl by IEEE
Number of pages1
StatePublished - 1989
EventQuantum Electronics and Laser Science Conference - Baltimore, MD, USA
Duration: Apr 24 1989Apr 28 1989


OtherQuantum Electronics and Laser Science Conference
CityBaltimore, MD, USA

ASJC Scopus subject areas

  • Engineering(all)


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