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Title

Molecular χ(2) gratings via electron-beam lithography

AuthorsDomínguez-Juárez, Jorge Luis; Macovez, Roberto; González Sagardoy, María Ujué CSIC ORCID ; Martorell, Jordi
KeywordsDiffraction gratings
Electron beam lithography
Nanophotonics
Nonlinear optical susceptibility
Optical fabrication
Optical harmonic generation
Optical materials
Optical modulation
organic compounds
Scanning electron microscopy
Issue Date14-Jul-2010
PublisherAmerican Institute of Physics
CitationApplied Physics Letters, 97 (2010)
AbstractWe show that the nonlinear optical activity of an organic molecule may be quenched by electron irradiation. Exploiting this effect, we inscribe periodic χ(2) patterns in the molecular films by means of a scanning electron microscope. The second harmonic diffraction efficiency of the resulting χ(2) gratings is measured. The relative intensity of the diffraction orders observed agrees with the expectations for a sheet of nonlinear dipoles with a periodic modulation. No linear diffraction is seen. The present method allows realizing any type of two-dimensional χ(2) pattern with a resolution only limited by the electron beam patterning capabilities.
Publisher version (URL)http://dx.doi.org/10.1063/1.3464161
URIhttp://hdl.handle.net/10261/33772
DOI10.1063/1.3464161
ISSN0003-6951
Appears in Collections:(IMN-CNM) Artículos

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