TY - JOUR AU - Lesiak, Piotr AU - Wójcik, Michał PY - 2011/09/29 Y2 - 2024/03/29 TI - Nonlinear optical characterization of the gold nanoparticles coated by the thiols JF - Photonics Letters of Poland JA - Photonics Lett. Pol. VL - 3 IS - 3 SE - Articles DO - 10.4302/photon. lett. pl.v3i3.242 UR - https://photonics.pl/PLP/index.php/letters/article/view/3-40 SP - pp. 113-115 AB - Structured nanomaterials have great potential applications based on their unusual optical properties, such as a negative refractive index [1], plasmon waveguiding [2] or nonlinear optics. In this paper we present the nonlinear optical characterization of gold nanoparticles coated by thiols with the ratio of mesogenic to n-alkyl thiols varying from 1:2 to 1:1 in a toluene suspension using the Z-scan technique. The type of mesogenic molecule in the metal coating had a profound influence on the gold-cluster self-assembly. To check how these clusters affect the nonlinear properties we use two different polarizations of a laser beam - linear and circular.  <br /> <br />Full Text: <a class="file" href="/PLP/index.php/letters/article/view/3-40/177" target="_parent">PDF</a> <br /> <strong><br />References:</strong> <ol> <li> J.B. Pendry, "Negative Refraction Makes a Perfect Lens", Phys. Rev. Lett. 85, 3966 (2000).<a href="http://dx.doi.org/10.1103/PhysRevLett.85.3966">[CrossRef]</a></li> <li>S.A. Maier, M.L. Brongersma, P.G. Kik, S. Meltzer, A.A.G. Requicha, H.A. Atwater, "Plasmonics?A Route to Nanoscale Optical Devices", Adv. Mater. 13, 1501 (2001). <a href="http://dx.doi.org/10.1002/1521-4095(200110)13:19%3C1501::AID-ADMA1501%3E3.0.CO;2-Z">[CrossRef]</a></li> <li>M. Sheik-Bahae, A.A. Said, E.W. Van Stryland, "High-sensitivity, single-beam n<sub>2</sub> measurements", Opt. Lett. 14, 955 (1989). <a href="http://dx.doi.org/10.1364/OL.14.000955">[CrossRef]</a></li> <li>M. Sheik-Bahae, A.A. Said, T.H. Wei, D.J. Hagan, E.W. Van Stryland, "Sensitive measurement of optical nonlinearities using a single beam", J. Quant. Electr. 26, 760 (1990). <a href="http://dx.doi.org/10.1109/3.53394">[CrossRef]</a></li> <li>B.E.A. Saleh, M.C. Teich, Fundamentals of Photonics (John Wiley & Sons, Inc., second edition, 2007).</li> </ol> ER -