Enhanced Nonlinear Optical Response of Composite Materials

Autor:	Russell J. Gehr, John E. Sipe, Robert W. Boyd, George L. Fischer, Samson A. Jenekhe, John A. Osaheni, Laura A. Weller-Brophy
Rok vydání:	1995
Předmět:	chemistry.chemical_classification Materials science Ideal (set theory) Composite number General Physics and Astronomy Polymer Conjugated system Nonlinear system chemistry.chemical_compound Nonlinear optical chemistry Titanium dioxide Composite material Local field
Zdroj:	Physical Review Letters. 74:1871-1874
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.74.1871
Popis:	We present experimental results which demonstrate that the effective third-order susceptibility of a composite optical material can exceed those of the materials from which it is constructed. In particular, we have formed a composite of alternating, sub-wavelength-thick layers of titanium dioxide and the conjugated polymer poly( $p$-phenylene-benzobisthiazole), and find that its nonlinear susceptibility exceeds that of its more nonlinear constituent by 35%. The enhancement of the nonlinear susceptibility, which under more ideal but still realistic conditions can be as large as a factor of 10, can be understood as a consequence of local field corrections.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::384984566f8bc6df2a4fddc483f43247 https://doi.org/10.1103/physrevlett.74.1871 Zobrazit plný text záznamu