Third-order optical nonlinearities of PVP/Pd nanohybrids
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Pd nanoparticles stabilized by polyvinylpyrrolidone were synthesized following mild reduction of palladium ion complexes. Their morphology and optical properties were characterized using Transmission Electron Microscopy, Dynamic Light Scattering and UV–Vis absorption spectroscopy to confirm the existence of monodispersed, low-dimensional single nanoparticles. Furthermore, their third-order nonlinear optical properties were investigated by means of the Z-scan technique, using 35 ps and 4 ns laser pulses, both in the visible (532 nm) and in the infrared (1064 nm). These results denote that the surface plasmon resonance is not significantly contributing to the nonlinear optical response of Pd nanoparticles. In contrast, a two photon absorption process was found to contribute to the observed response. The present results are discussed and compared with previous literature findings. © 2017
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Papagiannouli, I.; Demetriou, M.; Chatzikyriakos, G.; Iliopoulos, K.; Krasia-Christoforou, T.; Couris, S. (2013)In the present work, the third-order nonlinear optical response of two different types of Pd-polymer micellar nanohybrids are investigated using 4 ns, visible and infrared laser excitation. The prepared nanohybrids were ...
Bennett, S.; Snowden, C. M.; Iezekiel, Stavros (1996)
Papagiannouli, I.; Demetriou, M.; Krasia-Christoforou, T.; Couris, S. (2014)In the present work the synthesis and physicochemical characterisation of a new class of Pd-containing micellar nanohybrid systems are presented. The new systems consist of metallic Pd nanoparticles and well-defined diblock ...