Linear and Nonlinear Laser Spectroscopy of Surface Adsorbates with Sub-Monolayer Sensitivity

An experimental setup consisting of three highly sensitive spectroscopic methods for the investigation of the optical properties of surface adsorbates at low coverages is presented. The three spectroscopies cover a large wavelength range from ultraviolet to infrared and can be applied from ambient c...

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Veröffentlicht in:Journal of physical chemistry. C 2012-04, Vol.116 (15), p.8642-8648
Hauptverfasser: Thämer, Martin, Kartouzian, Aras, Heister, Philipp, Gerlach, Sabine, Tschurl, Martin, Boesl, Ulrich, Heiz, Ulrich
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container_end_page 8648
container_issue 15
container_start_page 8642
container_title Journal of physical chemistry. C
container_volume 116
creator Thämer, Martin
Kartouzian, Aras
Heister, Philipp
Gerlach, Sabine
Tschurl, Martin
Boesl, Ulrich
Heiz, Ulrich
description An experimental setup consisting of three highly sensitive spectroscopic methods for the investigation of the optical properties of surface adsorbates at low coverages is presented. The three spectroscopies cover a large wavelength range from ultraviolet to infrared and can be applied from ambient conditions down to ultrahigh vacuum. For the IR and the visible range, surface-sensitive cavity ringdown spectroscopy is used; the UV region is covered by surface second harmonic generation spectroscopy, a nonlinear technique. The potential of the setup is revealed by measurements of the laser dye Rhodamine 110 that is spin coated on a substrate. The reliability of the methods is verified by comparing obtained spectra with those obtained using standard techniques. Finally, the sensitivity of all three methods is estimated and shown to be sensitive enough to perform measurements in the sub-monolayer limit (in the best case down to
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subjects Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of specific thin films
Physics
title Linear and Nonlinear Laser Spectroscopy of Surface Adsorbates with Sub-Monolayer Sensitivity
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