Enhanced second-harmonic response and stability of corona-poled guest?host polycarbonate thin films
| Autor: | F. Wan, K. Koch, D. R. Martinez, G.O. Carlisle |
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| Rok vydání: | 1995 |
| Předmět: |
Materials science
business.industry Poling Isotropy Chromophore Condensed Matter Physics Atomic and Molecular Physics and Optics Corona poling Electronic Optical and Magnetic Materials Corona (optical phenomenon) Optics visual_art visual_art.visual_art_medium Electrical and Electronic Engineering Thin film Composite material Polycarbonate business Absorption (electromagnetic radiation) |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 6 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/bf00187202 |
| Popis: | Second-harmonic generation and spectroscopic absorption measurements were made to study the non-linear optical and stability properties of guest/host polycarbonate thin films in which the guest chromophores were oriented by corona poling. Optimum poling conditions were achieved at temperatures less than the glass-rubber transition temperatures. Stabilized order parameters as high as 0.23 and retention of orientational order as high as 86% were found. Stable, resonance-enhanced, values of the non-linear optical coefficient d 33, for the fundamental of 1.064 Μm, were as high as 31 pm V−1. This value is over four times that predicted by a simple thermodynamic model for isotropic materials. Hydrogen bonding between the guest and polycarbonate is proposed to account for the high d 33 coefficients and long-term stability of the films. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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