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Sum-frequency generation spectroscopy of interfaces
This paper reviews aspects of nonlinear optical spectroscopy of interfaces. The emphasis is put on second-order nonlinear optical techniques, such as sum-frequency generation (SFG), which possess intrinsic surface or interface selectivity and can therefore be used to probe buried interfaces accessib...
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Published in: | Reports on progress in physics 2005-05, Vol.68 (5), p.1095-1127 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | This paper reviews aspects of nonlinear optical spectroscopy of interfaces. The emphasis is put on second-order nonlinear optical techniques, such as sum-frequency generation (SFG), which possess intrinsic surface or interface selectivity and can therefore be used to probe buried interfaces accessible by light. The basic concepts of the second-order nonlinear response of surfaces and interfaces are given. While SFG in the ultraviolet–visible range allows one to achieve surface-specific electronic spectroscopy, infrared–visible SFG spectroscopy allows one to have access to absolute vibrational spectra of adsorbates at an interface. The main experimental schemes commonly employed are described. Selected experimental examples are given for studies of liquid surfaces and interfaces, polymer surfaces and interfaces, solid surfaces under ultra-high vacuum conditions or in inert atmospheres, solid–gas interfaces, solid–liquid interfaces and solid–solid interfaces. Both frequency-resolved studies and time-domain measurements are addressed. |
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ISSN: | 0034-4885 1361-6633 |
DOI: | 10.1088/0034-4885/68/5/R03 |