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<h3 align="center">Welcome to the Nano-Optics website.</h3><p>What we do, in four images: </p> <table border="0" width="374" height="152" align="center"> <tbody> <tr> <td align="center"><div style="text-align: center"><img src="images/stories/topography.png" border="0" alt="Topography" title="Multipolar eigenmodes in plasmonic nanodisks." width="200" height="100" /><br />Topography</div> </td> <td align="center"><div style="text-align: center"><img src="images/stories/amplitude.png" border="0" alt="Magnitude |E|" title="Multipolar eigenmodes in plasmonic nanodisks." width="200" height="100" /><br />Magnitude |E|</div> </td> </tr> <tr> <td align="center"><div style="text-align: center"><img src="images/stories/phase.png" border="0" alt="Phase φ = arg(E(t)) " title="Multipolar eigenmodes in plasmonic nanodisks." width="200" height="100" /></div> Phase φ = arg(E(t))</td> <td align="center"><div style="text-align: center"><img src="images/stories/Disks%20realPart.gif" border="0" alt="Instantaneous field strength ℜ{E(t)}" title="Multipolar eigenmodes in plasmonic nanodisks." width="200" height="100" /></div>Instantaneous field strength ℜ{E(t)} </td> </tr> </tbody> </table><p>&nbsp;</p><p> We measure plasmonic nano-structures, here gold nano-discs. An atomic force microscope records the topography, while simultaneously our homebuilt apertureless scanning nearfield optical microscope measures the magnitude and phase of the plasmonic eigenmodes of the structures, as they are excited by laser radiation. </p><hr width="100%" size="1" /><p>&nbsp;</p>

<h3 align="center">Welcome to the Nano-Optics website.</h3><p>What we do, in four images: </p> <table border="0" width="374" height="152" align="center"> <tbody> <tr> <td align="center"><div style="text-align: center"><img src="images/stories/topography.png" border="0" alt="Topography" title="Multipolar eigenmodes in plasmonic nanodisks." width="200" height="100" /><br />Topography</div> </td> <td align="center"><div style="text-align: center"><img src="images/stories/amplitude.png" border="0" alt="Magnitude |E|" title="Multipolar eigenmodes in plasmonic nanodisks." width="200" height="100" /><br />Magnitude |E|</div> </td> </tr> <tr> <td align="center"><div style="text-align: center"><img src="images/stories/phase.png" border="0" alt="Phase φ = arg(E(t)) " title="Multipolar eigenmodes in plasmonic nanodisks." width="200" height="100" /></div> Phase φ = arg(E(t))</td> <td align="center"><div style="text-align: center"><img src="images/stories/Disks%20realPart.gif" border="0" alt="Instantaneous field strength ℜ{E(t)}" title="Multipolar eigenmodes in plasmonic nanodisks." width="200" height="100" /></div>Instantaneous field strength ℜ{E(t)} </td> </tr> </tbody> </table><p>&nbsp;</p><p> We measure plasmonic nano-structures, here gold nano-discs. An atomic force microscope records the topography, while simultaneously our homebuilt apertureless scanning nearfield optical microscope measures the magnitude and phase of the plasmonic eigenmodes of the structures, as they are excited by laser radiation. </p><hr width="100%" size="1" /><p>&nbsp;</p> 2010-07-01T14:55:07Z 2010-07-01T14:55:07Z http://www.nanoopt.org/index.php?option=com_content&view=article&id=1250:46-transition-from-isolated-to-collective-modes-in-plasmonic-oligomers&catid=88:published&Itemid=310 Ralf Vogelgesang r.vogelgesang@fkf.mpg.de

<p><img src="images/stories/publications/46/toc.png" border="0" alt="Transition from Isolated to Collective Modes in Plasmonic Oligomers." title="Plasmonic oligomers" width="152" height="75" style="border: 0;" /></p> <p>Nano Lett. <span class="citation_year">2010</span>, <strong><span class="citation_volume">10</span></strong> (7), pp 2721–2726<br /><a href="http://dx.doi.org/10.1021/nl101938p" title="Transition from Isolated to Collective Modes in Plasmonic Oligomers">Link to paper</a></p>

<p><img src="images/stories/publications/46/toc.png" border="0" alt="Transition from Isolated to Collective Modes in Plasmonic Oligomers." title="Plasmonic oligomers" width="152" height="75" style="border: 0;" /></p> <p>Nano Lett. <span class="citation_year">2010</span>, <strong><span class="citation_volume">10</span></strong> (7), pp 2721–2726<br /><a href="http://dx.doi.org/10.1021/nl101938p" title="Transition from Isolated to Collective Modes in Plasmonic Oligomers">Link to paper</a></p> 2010-01-14T14:55:07Z 2010-01-14T14:55:07Z http://www.nanoopt.org/index.php?option=com_content&view=article&id=1081:42-real-space-imaging-of-nanoplasmonic-resonances&catid=88:published&Itemid=310 Ralf Vogelgesang r.vogelgesang@fkf.mpg.de

<p><a href="index.php?option=com_content&amp;view=article&amp;id=314%3Awelcome&amp;Itemid=1" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/42/fig1.png" border="0" alt="Typical top view of a large area gold nanodot matrix on a sapphire substrate made by DiMPLA." title="DiMPLA structure" width="154" height="75" style="border: 0;" /></a><a href="index.php?option=com_content&amp;view=article&amp;id=314%3Awelcome&amp;Itemid=1" title="Read Article: Welcome"> </a></p> <p><cite></cite>Analyst 135, p.1175-1181 (<span class="citation_year">2010</span>). Minireview.<br /><a href="http://dx.doi.org/10.1039/C000887G" target="_blank">Link to paper</a></p>

<p><a href="index.php?option=com_content&amp;view=article&amp;id=314%3Awelcome&amp;Itemid=1" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/42/fig1.png" border="0" alt="Typical top view of a large area gold nanodot matrix on a sapphire substrate made by DiMPLA." title="DiMPLA structure" width="154" height="75" style="border: 0;" /></a><a href="index.php?option=com_content&amp;view=article&amp;id=314%3Awelcome&amp;Itemid=1" title="Read Article: Welcome"> </a></p> <p><cite></cite>Analyst 135, p.1175-1181 (<span class="citation_year">2010</span>). Minireview.<br /><a href="http://dx.doi.org/10.1039/C000887G" target="_blank">Link to paper</a></p> 2009-11-01T14:55:07Z 2009-11-01T14:55:07Z http://www.nanoopt.org/index.php?option=com_content&view=article&id=732:40-plasmonic-activity-of-large-area-gold-nanodot-arrays-on-arbitrary-substrates&catid=88:published&Itemid=310 Ralf Vogelgesang r.vogelgesang@fkf.mpg.de

<p> <a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/40/fig1.png" border="0" alt="Typical top view of a large area gold nanodot matrix on a sapphire substrate made by DiMPLA." title="DiMPLA structure" width="99" height="75" /> </a><a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/40/fig3d.png" border="0" alt="Three-dimensional view (radius = 300 nm) of the simulated optical response of an isolated, semisubmersed Au sphere (radius = 84 nm). The quarter cutaway reveals the Au−sapphire and sapphire−air interface geometries. The same color scale as in (b) indicates the scattered |Ez| component for λexc = 942 nm at normal incidence." title="Simulation of dipolar response" width="105" height="75" /></a><a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" title="Read Article: Welcome"> </a></p><p><cite></cite>Nano Lett. <span class="citation_year">2010</span>, <strong><span class="citation_volume">10</span></strong> (1), pp 47–51<br /><a href="http://pubs.acs.org/doi/full/10.1021/nl903633z" title="Plasmonic Activity of Large-Area Gold Nanodot Arrays on Arbitrary Substrates">Link to paper</a> </p>

<p> <a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/40/fig1.png" border="0" alt="Typical top view of a large area gold nanodot matrix on a sapphire substrate made by DiMPLA." title="DiMPLA structure" width="99" height="75" /> </a><a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/40/fig3d.png" border="0" alt="Three-dimensional view (radius = 300 nm) of the simulated optical response of an isolated, semisubmersed Au sphere (radius = 84 nm). The quarter cutaway reveals the Au−sapphire and sapphire−air interface geometries. The same color scale as in (b) indicates the scattered |Ez| component for λexc = 942 nm at normal incidence." title="Simulation of dipolar response" width="105" height="75" /></a><a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" title="Read Article: Welcome"> </a></p><p><cite></cite>Nano Lett. <span class="citation_year">2010</span>, <strong><span class="citation_volume">10</span></strong> (1), pp 47–51<br /><a href="http://pubs.acs.org/doi/full/10.1021/nl903633z" title="Plasmonic Activity of Large-Area Gold Nanodot Arrays on Arbitrary Substrates">Link to paper</a> </p> 2009-10-24T13:53:09Z 2009-10-24T13:53:09Z http://www.nanoopt.org/index.php?option=com_content&view=article&id=961:39-the-fabry-perot-resonances-in-one-dimensional-plasmonic-nano-antennas&catid=88:published&Itemid=310 Ralf Vogelgesang r.vogelgesang@fkf.mpg.de

<p> <a href="http://dx.doi.org/10.1126/science.1181552" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/39/fig1.gif" border="0" alt="illustration" title="illustration" width="116" height="75" /> </a><a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" title="Read Article: Welcome"> </a></p><p><cite></cite><em>Science</em> 23 October 2009: Vol. 326. no. 5952, pp. 529 - 530<br /><a href="http://dx.doi.org/10.1126/science.1181552" title="Glimpsing the Weak Magnetic Field of Light">Link to paper</a></p>

<p> <a href="http://dx.doi.org/10.1126/science.1181552" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/39/fig1.gif" border="0" alt="illustration" title="illustration" width="116" height="75" /> </a><a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" title="Read Article: Welcome"> </a></p><p><cite></cite><em>Science</em> 23 October 2009: Vol. 326. no. 5952, pp. 529 - 530<br /><a href="http://dx.doi.org/10.1126/science.1181552" title="Glimpsing the Weak Magnetic Field of Light">Link to paper</a></p> 2009-03-05T13:53:09Z 2009-03-05T13:53:09Z http://www.nanoopt.org/index.php?option=com_content&view=article&id=450:37-the-fabry-perot-resonances-in-one-dimensional-plasmonic-nano-antennas&catid=88:published&Itemid=310 Ralf Vogelgesang r.vogelgesang@fkf.mpg.de

<p> <a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/37/dorfmuller09Fig1.png" border="0" alt="Scheme of the setup. Weakly focused s-polarized radiation excites nanowires largely unperturbed by the probing tip. A typical response field is indicated by the electric field strength distribution on the wire surface and a snapshot of selected field lines. Backscattered light is modulated by the tip vibration (frequency ω) and polarization-analyzed along the tip axis." title="Setup Scheme" height="75" /> </a><a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/37/dorfmuller09Fig2.png" border="0" alt="(a) Resonance curves obtained by plotting the maximum signal per wire versus the wire length. The experimental and simulation data have been extracted from Figure 1. The solid lines show Lorentzians fitted to the data. (b) Plot of the Lorentzians’ peak positions versus the resonance order. The lines are a least-squares fit to the data. The inset is a zoom where the fitted straight lines cross the y axis. (c) Resonance curves when the sample is rotated by ≈20°. (d) Resonance length versus resonance plot of the rotated sample." title="Geometric resonances." height="75" /></a><a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" title="Read Article: Welcome"> </a></p><p><cite></cite>Nano Lett. <span class="citation_year">2009</span>, <strong><span class="citation_volume">9</span></strong> (6), pp 2372–2377<br /><a href="http://pubs.acs.org/doi/full/10.1021/nl900900r" title="Fabry-Pérot Resonances in One-Dimensional Plasmonic Nanostructures">Link to paper</a></p>

<p> <a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/37/dorfmuller09Fig1.png" border="0" alt="Scheme of the setup. Weakly focused s-polarized radiation excites nanowires largely unperturbed by the probing tip. A typical response field is indicated by the electric field strength distribution on the wire surface and a snapshot of selected field lines. Backscattered light is modulated by the tip vibration (frequency ω) and polarization-analyzed along the tip axis." title="Setup Scheme" height="75" /> </a><a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" target="_blank" title="Read Article: Welcome"><img src="images/stories/publications/37/dorfmuller09Fig2.png" border="0" alt="(a) Resonance curves obtained by plotting the maximum signal per wire versus the wire length. The experimental and simulation data have been extracted from Figure 1. The solid lines show Lorentzians fitted to the data. (b) Plot of the Lorentzians’ peak positions versus the resonance order. The lines are a least-squares fit to the data. The inset is a zoom where the fitted straight lines cross the y axis. (c) Resonance curves when the sample is rotated by ≈20°. (d) Resonance length versus resonance plot of the rotated sample." title="Geometric resonances." height="75" /></a><a href="index.php?option=com_content&view=article&id=314%3Awelcome&Itemid=1" title="Read Article: Welcome"> </a></p><p><cite></cite>Nano Lett. <span class="citation_year">2009</span>, <strong><span class="citation_volume">9</span></strong> (6), pp 2372–2377<br /><a href="http://pubs.acs.org/doi/full/10.1021/nl900900r" title="Fabry-Pérot Resonances in One-Dimensional Plasmonic Nanostructures">Link to paper</a></p> 2008-08-28T13:58:25Z 2008-08-28T13:58:25Z http://www.nanoopt.org/index.php?option=com_content&view=article&id=249:34-direct-near-field-optical-imaging-of-higher-order-plasmonic-resonances&catid=88:published&Itemid=310 Ralf Vogelgesang r.vogelgesang@fkf.mpg.de

<p><a href="http://dx.doi.org/10.1021/nl801396r" target="_blank"><img src="images/stories/publications/33/fig1.png" border="0" alt="We map in real space and by purely optical means near-field optical information of localized surface plasmon polariton (LSPP) resonances excited in nanoscopic particles. We demonstrate that careful polarization control enables apertureless scanning near-field optical microscopy (aSNOM) to image dipolar and quadrupolar LSPPs of the bare sample with high fidelity in both amplitude and phase. This establishes a routine method for in situ optical microscopy of plasmonic and other resonant structures under ambient conditions. " vspace="5" width="200" height="75" /></a><br />Nano Lett. (2008) <strong>8</strong>, 3155-3159.<br /><a href="http://dx.doi.org/10.1021/nl801396r" target="_blank">Link to paper</a></p>

<p><a href="http://dx.doi.org/10.1021/nl801396r" target="_blank"><img src="images/stories/publications/33/fig1.png" border="0" alt="We map in real space and by purely optical means near-field optical information of localized surface plasmon polariton (LSPP) resonances excited in nanoscopic particles. We demonstrate that careful polarization control enables apertureless scanning near-field optical microscopy (aSNOM) to image dipolar and quadrupolar LSPPs of the bare sample with high fidelity in both amplitude and phase. This establishes a routine method for in situ optical microscopy of plasmonic and other resonant structures under ambient conditions. " vspace="5" width="200" height="75" /></a><br />Nano Lett. (2008) <strong>8</strong>, 3155-3159.<br /><a href="http://dx.doi.org/10.1021/nl801396r" target="_blank">Link to paper</a></p>