ta_winter_college_ on_optics_and_energy_ico-ictp_award _2010.pdf

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Organic materials • Flexibility to tune the nonlinear optical response by manipulating the molecular structure • π-conjugated structures σ C C Conjugation: j g alternation of single g and doubles bonds π between carbon atoms
Conjugation π-conjugation σ bond: forms a strong chemical bond; localized π bond: weaker bond; out of the C atoms axis π bond in conjugated system: delocalized electrons high optical nonlinearities χ (3)
Page 1 and 2: Optical p nonlinearities in organic
Page 3 and 4: University of Sao Paulo - in Sao Ca
Page 5 and 6: Professors: 80 Instituto de Física
Page 7 and 8: Optical p nonlinearities in organic
Page 9 and 10: Nonlinear optics Nonlinear Optics N
Page 11 and 12: anharmonic oscillator P = χ Nonlin
Page 13 and 14: Second order processes Nonlinear Op
Page 15 and 16: Third order processes Nonlinear Opt
Page 17 and 18: Kerr media: n n0 n2I + = Self phase
Page 19 and 20: χ (3) is a complex quantity Nonlin
Page 21 and 22: Two-photon absorption (2PA) process
Page 23 and 24: applications of 2PA - two-photon fl
Page 25 and 26: two-photon fluorescence microscopy
Page 27: Real applications in nonlinear opti
Page 31 and 32: Research • study of optical nonli
Page 33 and 34: norrmalized transmmitta</st
Page 35 and 36: nonlinear absorption α α + ββ I
Page 37 and 38: Azoaromatic samples HO H2C H2C HO H
Page 39 and 40: Normalizzed Transmittta</st
Page 41 and 42: Planarity of the π-bridge Thermall
Page 43 and 44: a intennsity (arb. unit) u White li
Page 45 and 46: α (cm -1 ) 20 15 10 5 MeH-PPV 0 40
Page 47 and 48: two-photon polymerization applicati
Page 49 and 50: Two-photon polymerization Monomer +
Page 51 and 52: Two-photon polymerization even high
Page 53 and 54: Two-photon polymerization After the
Page 55 and 56: Microstructures conta</stro
Page 57 and 58: Other studies • microstructures f
Page 59 and 60: Other studies • microstructures f
Page 61 and 62: Other studies • 3D cell migration
Page 63: for a copy of this presenta

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