Materials for Nonlinear Optics

Copolymers having aromatic amine repeating units. 

Some principles of nonlinear optics (NLO) were described in Section 5.5. 

Three-photon absorption of a series of donor-acceptor trows-stilbene derivatives 

Quadratic and cubic optical nonlinearities of 4-fluorophenylethynyl- and 4-nitro-( )-stilbenylethynylruthenium complexes were demonstrated [44]. The complexes frans-[Ru(C = C-4-C6H4F)X(dppe)2] [X = C1 (1), CsCPh (2), C = C-4-C6H4NO2 (3)], trans-[Ru C = C-4-C6H4-( )-CH CH-4-C6H4N02 X(dppe)2] [X = C = CPh (4), C C-4-C6H4C = CPh (5)], and [C6H3-1,3- C = C-trons-[RuCl(dppe)2] 2,5-(C = C-4-C6H4F)] 

Micron- and submicron-scale lateral structures of optically nonlinear organic films comprised of substituted trons-stilbene derivatives (Ri = OCH3, R2 = CN) was characterized [45]. Second harmonic generation (SHG), optical microscopy, and atomic force microscopy (AFM) were used in this investigation. The third-order nonlinear optical properties and two-photon absorption ofdifferent types of stilbene derivatives (D-tt-D, A-7t-A, D-7t-A) were investigated [46]. Using the INDO/CI method, the UV-vis spectra were explored and the position and strength of the two-photon absorption were predicted by sum-over-states expression. Relationships of the structures, spectra, and nonlinear optical properties have been examined. Two-photon absorption spectra (650-1000 nm) of a series of asymmetrically substituted stilbenoid chromophores 

---

Perry, J. W. Nonlinear Optical Properties of Molecules and Materials. In Materials for Nonlinear Optics Chemical Perspectives, Marder, S. R. Sohn, J. D. Stucky, G. D., Eds. ACS Symposium Series 455 American Chemical Society Washington, DC, 1991, pp 67-88. 

Chiang, W. Thompson, M. E. Van Engen, D. Synthesis and Nonlinear Optical Properties of Inorganic Co-ordination Polymers. In Organic Materials for Nonlinear Optics II Hann, R. A., Bloor, D., Eds. Royal Society of Chemistry London, 1991 pp 210-216. 

The crude product is at once purified according to the usual methods of organic chemistry. Then it is essential to lower the impurities rate to a threshold compatible with crystal growth and especially with the use of the materials for nonlinear optics (10 to 100 parts per million). 

With the burgeoning of interest in this field, the publication of this book is very timely. An effort was made to include contributions from all the major research efforts in the world concerned with the development of organic and polymeric materials for nonlinear optical applications. The chapters in this book serve as a comprehensive view of the state of the art in this field, yet sufficient introductory and review material is included to render it useful for researchers interested in entering this field. 

R. A. Hann and D. Bloor (Eds.), Organic Materials for Nonlinear Optics, OMNO Proc., 2, 1... 

Materials for nonlinear optics chemical perspectives / Seth R. Marder, editor, John E. Sohn, editor, Galen D. Stucky, editor. 

---