14 July 2003 Poled polymer thin film gratings studied by near-field second harmonic optical microscopy and far-field optical diffraction
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Proceedings Volume 4991, Organic Photonic Materials and Devices V; (2003) https://doi.org/10.1117/12.475452
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States
Abstract
Electrical poling induces polar ordering of molecules in a grating that has been holographically inscribed on a thin film of polymer functionalized with azobenzene side chains. Depending on the surface relief amplitude, the resulting χ(2) grating, seen by second harmonic generation (SHG) near-field scanning optical microscopy (NSOM), can have a periodic structure significantly different from the topographical image. The far-field linear and SHG diffraction patterns correlate well with the grating structures. Poling of the thin-film grating, which presumably has photo-driven non-uniform material properties within each period, leads to the more complex structure of the χ(2) grating.
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Richard D. Schaller, Richard D. Schaller, Richard J. Saykally, Richard J. Saykally, Yuen-Ron Shen, Yuen-Ron Shen, Francois Lagugne-Labarthet, Francois Lagugne-Labarthet, } "Poled polymer thin film gratings studied by near-field second harmonic optical microscopy and far-field optical diffraction", Proc. SPIE 4991, Organic Photonic Materials and Devices V, (14 July 2003); doi: 10.1117/12.475452; https://doi.org/10.1117/12.475452
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