Third-order Nonlinear Optical Properties of Octa-substituted Metal-free Phthalocyanine Thin Films

✍ Scribed by Hari Singh Nalwa; Michael Klaus Engel; Michael Hanack; Hanna Schultz

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 298 KB
• Volume: 10
• Category: Article
• ISSN: 0268-2605
• DOI: 10.1002/(sici)1099-0739(199610)10:8<661::aid-aoc528>3.0.co;2-x

✦ Synopsis

Third-order nonlinear optical susceptibility, k3) of symmetrically octa-substituted metalfree phthalocyanine thin films measured by the third-harmonic generation technique are reported. The metal-free hthalocyanine has been found to show a 3) ( -3w; 44 m) value as large as 7 . 7 3 ~ lo-'* esu at 1.80 pm. The figure of merit, $"/a, was estimated to be 4.17X lo-'' esu cm at 1.05 pm and 6 . 9 7 ~ esu cm at 1.65 pm. Both linear and third-order optical properties of Iiquidcrystalline metal-free phthalocyanines are discussed.