Encoding of macroscopic second-order non-linearity via all-optical polar alignment in substituted norbornene polymer thin films
Resource
Chemical Physics Letters 332 (1-2): 19-25
Journal
Chemical Physics Letters
Journal Volume
332
Journal Issue
1-2
Pages
19-25
Date Issued
2000
Author(s)
Abstract
Efficient all-optical poling of substituted norbornene azo-molecules-doped polymer thin films is presented. The growth and decay of photoinduced second-order susceptibility χ(2) has been studied. The possibility of encoding χ(2) at low seeding intensities (about 10MW/cm2 for fundamental and 100W/cm2 for second harmonic) is demonstrated. The value of encoded χ(2) in mono-norbornene-doped polymethylmethacrylate (PMMA) and poly-norbornene polymer have been found to be with the same order of magnitude despite the latter revealed considerably higher first hyperpolarizability. This is due to the rigidity of the poly-norbornene polymer backbone and the strong orientational correlation between pendant chromophores that reduce reorientation of molecules. © 2000 Elsevier Science B.V.
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
40.pdf
Size
168.27 KB
Format
Adobe PDF
Checksum
(MD5):fd0131c45b04dcd6ac45b7c35392b92f