The synthesis and second harmonic coefficients, d33, and d3t as well as the related susceptibilities, :t~, of two new series of (NLO-dye methacrylate)-(methyl methacrylate) copolymers were investigated. The NLO-chromophores bound covalently to the polymer chain were 4-nitro-4'-dialkylamino-ct-cyano-
Polymers containing nonlinear optical groups in the main chain. Second harmonic generation in corona poled thin films
β Scribed by G. S'heeren; A. Persoons; H. Bolink; M. Heylen; M. Van Beylen; C. Samyn
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 423 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0014-3057
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New NLO dye methacrylate-methylmethacrylate copolymers were synthesized. The NLO-chromophores bound covalently to the polymer chain are: 4-cyano-4'-dialkylamino-a-cyano-stilbene, 4-cyano-4'-alkoxy-:~-cyano-stilbene and 4-cyano-4'-alkoxy-stilbene. Films spincoated from these polymers were poled by a
This paper deals with relations between solvent diffusion and changes in second harmonic generation (SHG) in a side-group polymer with nonlinear optical (NLO) chromophores. The SHG signal of poled polymer thin films was measured as a function of time during the swelling process with methanol. The re