Photoinduced Modifications Of The Nonlinear Optical Response In Liquid Crystalline Azopolymers (springer Theses)
by Raquel Alicante /
2012 / English / PDF
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Nonlinear optical (NLO) phenomena such as frequency conversion have
played a key role in the development of photonic technologies. This
thesis reports a detailed study of the molecular response of a
large variety of push-pull organic compounds using the Second
Harmonic Generation technique, which will serve as a starting point
for the investigation at the macroscopic scale of azobenzene-based
liquid crystalline polymeric films and their blends with highly
efficient NLO
Nonlinear optical (NLO) phenomena such as frequency conversion have
played a key role in the development of photonic technologies. This
thesis reports a detailed study of the molecular response of a
large variety of push-pull organic compounds using the Second
Harmonic Generation technique, which will serve as a starting point
for the investigation at the macroscopic scale of azobenzene-based
liquid crystalline polymeric films and their blends with highly
efficient NLO
chromophores. These materials are designed with the aim of
exploiting their photoadressability in order to tailor their
nonlinear behaviour. The magnitude and symmetry of their NL
response was successfully controlled via light irradiation and
thermal treatments. Moreover, as a specific application, the
recording of efficient NLO gratings was achieved.
chromophores. These materials are designed with the aim of
exploiting their photoadressability in order to tailor their
nonlinear behaviour. The magnitude and symmetry of their NL
response was successfully controlled via light irradiation and
thermal treatments. Moreover, as a specific application, the
recording of efficient NLO gratings was achieved.