Organic Glasses and Crystals for Miniature Electro-Optic Devices: Synthesis, Characterization, and Applications
Abstract
A high-level computational analysis of two-photon absorbing derivatives of piperidone and cyclohexanone was carried out. Obtained data were compared with the experimental results. The molecular cross-section of the two-photon absorption of these compounds, as high as 3000x10(exp -50) cu cm s/photon at nanosecond pumping, makes then promising nonlinear materials for optical limiting in near-infrared region. They also exhibit an intense two-photon exciting fluorescence, of the same order as that of Phodamine B. In addition, these compounds have previously demonstrated strong anticancer effect. Both features combined in a single compound also open the way for more efficient treatment of cancer. Characterization of the infrared absorption spectrum of the solutions of fullerene C(sub 60) with 2-cyclooctylamino-5- nitropyridinee additive known as COANP has been performed with the focus on possible bonding with the amino-group of the additive. No occurrence of such bonding was found at normal conditions. Also no change of optical absorption in visible region and optical limiting of fullerene due to chemical bonding with the additive was detected even for a molar proportion of the additive to fullerene approaching 200:1. A miniature electro-optic (E-O) modulator that comprises a Fabry-Perot (F-P) etalon integrated with an optical fiber was theoretically analyzed. The estimations indicated that the finesse of the F-P cavity is a highly critical factor in achieving low driving voltage of the modulator. Thin films of E-O polymers LD-3 and polyimide were prepared using spin casting technique followed by corona poling. The electro-optic coefficient r(sub 33) was measured and found to be between 3 and 5 pm/V.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2004
- Accession Number
- ADA427606
Entities
People
- Félix E Fernández
- Sergey S. Sarkisov
- Tanja Timofeeva
Organizations
- University of Puerto Rico at Mayaguez