Fabrication of spatial modulated second order nonlinear structures and quasi-phase matched second harmonic generation in a poled azo-copolymer planar waveguide

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题名:	Fabrication of spatial modulated second order nonlinear structures and quasi-phase matched second harmonic generation in a poled azo-copolymer planar waveguide
作者:	Lin, J.H., Lai, N.D., Chiu, C.H., Lin, C.-Y., Rieger, G.W., Young, J.F., Chien, F.S.-S., Hsu, C.C.
贡献者:	Department of Physics, Tunghai University
关键词:	Azo Compounds;Computer Simulation;Computer-Aided Design;Equipment Design;Equipment Failure Analysis;Models, Theoretical;Nonlinear Dynamics;Optics;Oscillometry;Polymers Medline is the source for the MeSH terms of this document.
日期:	2008
上传时间:	2013-05-21T09:16:12Z (UTC)
摘要:	This work demonstrates that arbitrary types of spatially modulated second-order susceptibility (χ(2)) structures such as 1D and 2D, periodic and quasi-periodic structures can be obtained by using the combination of corona poling and direct laser writing (DLW) techniques. The fabrication technique is based on the photodepoling of azo-dye molecules caused by one-photon or two-photon absorption during the DLW process. Polarization and second harmonic generation (SHG) images of the fabricated structures were measured by electrostatic force microscope and SHG mapping techniques, respectively. Furthermore, quasi-phase-matched (QPM) enhanced SHG from a 1D periodically poled azo-copolymer planar waveguide is demonstrated using an optical parametric oscillator laser by scanning wavelength from 1500 to 1600 nm. The resonant wavelength of the QPM enhanced SHG is peaked at 1537 nm with FWHM ? 2.5nm. ?2008 Optical Society of America.
關聯:	Optics Express 16 (11) , pp. 7832-7841
显示于类别:	[應用物理學系所] 期刊論文

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