Abstract
Composite film with alternating layers containing anionic 1,8,15,22-tetrakis (8-quinolineoxy-5-sulfonic acid)-phthalocyanine copper and cationic polydiallydimethylammonium chloride was fabricated by electrostatic self-assembled layer-by-layer (LBL) technique. The microstructure of the film was characterized by a series of techniques. The third-order nonlinear optical properties of the film were measured using 4f coherent imaging system with phase object (NIT-PO) with laser duration of 20 ps at the wavelength of 532 nm. The film exhibited excellent nonlinear absorption and self-focusing effect. The second-order molecular hyperpolarizability γ value of the film reaches as high as 1.54 × 10-29 esu.
| Original language | English |
|---|---|
| Pages (from-to) | 746-752 |
| Number of pages | 7 |
| Journal | Optical Materials |
| Volume | 36 |
| Issue number | 4 |
| DOIs | |
| State | Published - Feb 2014 |
| Externally published | Yes |
Keywords
- 4f Coherent imaging system
- Electronic self-assembly
- Phthalocyanine
- Thin film
- Third-order optical nonlinearity
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