Poled polymer thin-film gratings studied with far-field optical diffraction and second-harmonic near-field microscopy
Optics Letters, Vol. 28, Issue 15, pp. 1296-1298 (2003)
http://dx.doi.org/10.1364/OL.28.001296
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Abstract
Electrical poling induces polar ordering of molecules in a grating that has been holographically inscribed on a thin film of polymer with azobenzene side chains. The resulting χ(2) grating, seen by second-harmonic-generation (SHG) near-field scanning optical microscopy, can have a periodic structure that is 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 photodriven nonuniform material properties within each period, leads to the more complex structure of the χ(2) grating.
© 2003 Optical Society of America
OCIS Codes
(180.5810) Microscopy : Scanning microscopy
(190.4400) Nonlinear optics : Nonlinear optics, materials
(230.1950) Optical devices : Diffraction gratings
(230.4320) Optical devices : Nonlinear optical devices
(240.4350) Optics at surfaces : Nonlinear optics at surfaces
Citation
R. D. Schaller, R. J. Saykally, Y. R. Shen, and F. Lagugné-Labarthet, "Poled polymer thin-film gratings studied with far-field optical diffraction and second-harmonic near-field microscopy," Opt. Lett. 28, 1296-1298 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-15-1296
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