Experimental determination of the two-photon absorption cross sections of Silicon and TinIV compounds
We have experimentally determined the two-photon absorption cross sections (δ) of two silicon phthalocyanines and a series of seven tinIV derivatives with substituted salicylidene-2-aminophenols by the two-photon excitation fluorescence technique. The determination of δ for the phthalocyanines (Pcs)...
| Authors: | , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2010 |
| Country: | México |
| Institution: | Universidad Nacional Autónoma de México |
| Repository: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:57030352026 |
| Online Access: | https://www.redalyc.org/articulo.oa?id=57030352026 |
| Access Level: | Open access |
| Keyword: | Física, Astronomía y Matemáticas Two two photon absorption photon excitation fluorescence photon absorption cross section |
| Summary: | We have experimentally determined the two-photon absorption cross sections (δ) of two silicon phthalocyanines and a series of seven tinIV derivatives with substituted salicylidene-2-aminophenols by the two-photon excitation fluorescence technique. The determination of δ for the phthalocyanines (Pcs) was found to be limited by one-photon absorption at wavelengths near the first electronic transition. δ values for tinIV compounds were below 20×10−50 cm4 s photon−1 , one to two orders of magnitude lower than those found for Pcs. The differences on δ due to the nature and position of the substituents were noticeable enough to establish an initial relationship between the molecular structure and the non-linear optical properties for these TinIV compounds. |
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