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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Follonier, S. Bosshard, C. Fierz, M. Biaggio, I. Gunter, P. |
| Copyright Year | 1998 |
| Description | Author affiliation: Nonlinear Opt. Lab., Eidgenossische Tech. Hochschule, Zurich, Switzerland (Follonier, S.) |
| Abstract | 4-N,N-dimethylamino-4'-N'-methylstilbazolium toluene-p-sulfonate (DAST) is an organic salt that consists of the nonlinear optical stilbazolium cation and the tosylate anion needed to induce a noncentrosymmetric packing. It shows an enormous potential for electro-optical applications in the near infrared range due to an almost parallel alignment of the highly nonlinear chromophores along the polar a-axis (the angle between the molecular charge transfer axis and the polar axis is of about 20/spl deg/). In spite of the constant improvement of the photorefractive sensitivity of organic crystals since 1990, the obtained values are still far smaller than the theoretical expectation for optimized organic molecular crystals, which predicts a gain of several tens per centimeter for a response time of less than a second at an illumination intensity of 1 W/cm2. In order to improve the photorefractive sensitivity of organic crystals, the photogeneration and charge transport properties of the charge carriers are of prime importance and are investigated for the case of the organic salt DAST. |
| Starting Page | 406 |
| Ending Page | 408 |
| File Size | 188073 |
| Page Count | 3 |
| File Format | |
| ISBN | 0780349504 |
| DOI | 10.1109/NLO.1998.710333 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1998-08-10 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Photorefractive materials Crystals Charge carriers Photorefractive effect Photoconductivity Nonlinear optics Microscopy Gratings Temperature dependence Temperature distribution |
| Content Type | Text |
| Resource Type | Article |
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