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  • 1
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    Enhanced Nonlinear Refractive Index in ε-Near-Zero Materials (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-06-09
    Description: Author(s): L. Caspani, R. P. M. Kaipurath, M. Clerici, M. Ferrera, T. Roger, J. Kim, N. Kinsey, M. Pietrzyk, A. Di Falco, V. M. Shalaev, A. Boltasseva, and D. Faccio New propagation regimes for light arise from the ability to tune the dielectric permittivity to extremely low values. Here, we demonstrate a universal approach based on the low linear permittivity values attained in the ε -near-zero (ENZ) regime for enhancing the nonlinear refractive index, which ena… [Phys. Rev. Lett. 116, 233901] Published Wed Jun 08, 2016
    Keywords: Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Demonstration of a spaser-based nanolaser (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-08-18
    Description: One of the most rapidly growing areas of physics and nanotechnology focuses on plasmonic effects on the nanometre scale, with possible applications ranging from sensing and biomedicine to imaging and information technology. However, the full development of nanoplasmonics is hindered by the lack of devices that can generate coherent plasmonic fields. It has been proposed that in the same way as a laser generates stimulated emission of coherent photons, a 'spaser' could generate stimulated emission of surface plasmons (oscillations of free electrons in metallic nanostructures) in resonating metallic nanostructures adjacent to a gain medium. But attempts to realize a spaser face the challenge of absorption loss in metal, which is particularly strong at optical frequencies. The suggestion to compensate loss by optical gain in localized and propagating surface plasmons has been implemented recently and even allowed the amplification of propagating surface plasmons in open paths. Still, these experiments and the reported enhancement of the stimulated emission of dye molecules in the presence of metallic nanoparticles lack the feedback mechanism present in a spaser. Here we show that 44-nm-diameter nanoparticles with a gold core and dye-doped silica shell allow us to completely overcome the loss of localized surface plasmons by gain and realize a spaser. And in accord with the notion that only surface plasmon resonances are capable of squeezing optical frequency oscillations into a nanoscopic cavity to enable a true nanolaser, we show that outcoupling of surface plasmon oscillations to photonic modes at a wavelength of 531 nm makes our system the smallest nanolaser reported to date-and to our knowledge the first operating at visible wavelengths. We anticipate that now it has been realized experimentally, the spaser will advance our fundamental understanding of nanoplasmonics and the development of practical applications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Noginov, M A -- Zhu, G -- Belgrave, A M -- Bakker, R -- Shalaev, V M -- Narimanov, E E -- Stout, S -- Herz, E -- Suteewong, T -- Wiesner, U -- England -- Nature. 2009 Aug 27;460(7259):1110-2. doi: 10.1038/nature08318. Epub 2009 Aug 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Materials Research, Norfolk State University, Norfolk, Virginia 23504, USA. mnoginov@nsu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19684572" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 3
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    Loss-free and active optical negative-index metamaterials (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-08-06
    Description: The recently emerged fields of metamaterials and transformation optics promise a family of exciting applications such as invisibility, optical imaging with deeply subwavelength resolution and nanophotonics with the potential for much faster information processing. The possibility of creating optical negative-index metamaterials (NIMs) using nanostructured metal-dielectric composites has triggered intense basic and applied research over the past several years. However, the performance of all NIM applications is significantly limited by the inherent and strong energy dissipation in metals, especially in the near-infrared and visible wavelength ranges. Generally the losses are orders of magnitude too large for the proposed applications, and the reduction of losses with optimized designs seems to be out of reach. One way of addressing this issue is to incorporate gain media into NIM designs. However, whether NIMs with low loss can be achieved has been the subject of theoretical debate. Here we experimentally demonstrate that the incorporation of gain material in the high-local-field areas of a metamaterial makes it possible to fabricate an extremely low-loss and active optical NIM. The original loss-limited negative refractive index and the figure of merit (FOM) of the device have been drastically improved with loss compensation in the visible wavelength range between 722 and 738 nm. In this range, the NIM becomes active such that the sum of the light intensities in transmission and reflection exceeds the intensity of the incident beam. At a wavelength of 737 nm, the negative refractive index improves from -0.66 to -1.017 and the FOM increases from 1 to 26. At 738 nm, the FOM is expected to become macroscopically large, of the order of 10(6). This study demonstrates the possibility of fabricating an optical negative-index metamaterial that is not limited by the inherent loss in its metal constituent.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xiao, Shumin -- Drachev, Vladimir P -- Kildishev, Alexander V -- Ni, Xingjie -- Chettiar, Uday K -- Yuan, Hsiao-Kuan -- Shalaev, Vladimir M -- England -- Nature. 2010 Aug 5;466(7307):735-8. doi: 10.1038/nature09278.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Birck Nanotechnology Center and School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20686570" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 4
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    Physics. Transforming light (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-10-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shalaev, Vladimir M -- New York, N.Y. -- Science. 2008 Oct 17;322(5900):384-6. doi: 10.1126/science.1166079.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Birck Nanotechnology Center and School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907, USA. shalaev@ecn.purdue.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18927379" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Physics. Plasmonics goes quantum (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-10-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jacob, Zubin -- Shalaev, Vladimir M -- New York, N.Y. -- Science. 2011 Oct 28;334(6055):463-4. doi: 10.1126/science.1211736.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T5K2M3, Canada. zjacob@ualberta.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22034423" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    Broadband light bending with plasmonic nanoantennas (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-12-24
    Description: The precise manipulation of a propagating wave using phase control is a fundamental building block of optical systems. The wavefront of a light beam propagating across an interface can be modified arbitrarily by introducing abrupt phase changes. We experimentally demonstrated unparalleled wavefront control in a broadband optical wavelength range from 1.0 to 1.9 micrometers. This is accomplished by using an extremely thin plasmonic layer (~lambda/50) consisting of an optical nanoantenna array that provides subwavelength phase manipulation on light propagating across the interface. Anomalous light-bending phenomena, including negative angles of refraction and reflection, are observed in the operational wavelength range.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ni, Xingjie -- Emani, Naresh K -- Kildishev, Alexander V -- Boltasseva, Alexandra -- Shalaev, Vladimir M -- New York, N.Y. -- Science. 2012 Jan 27;335(6067):427. doi: 10.1126/science.1214686. Epub 2011 Dec 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22194414" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Planar photonics with metasurfaces (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-03-16
    Description: Metamaterials, or engineered materials with rationally designed, subwavelength-scale building blocks, allow us to control the behavior of physical fields in optical, microwave, radio, acoustic, heat transfer, and other applications with flexibility and performance that are unattainable with naturally available materials. In turn, metasurfaces-planar, ultrathin metamaterials-extend these capabilities even further. Optical metasurfaces offer the fascinating possibility of controlling light with surface-confined, flat components. In the planar photonics concept, it is the reduced dimensionality of the optical metasurfaces that enables new physics and, therefore, leads to functionalities and applications that are distinctly different from those achievable with bulk, multilayer metamaterials. Here, we review the progress in developing optical metasurfaces that has occurred over the past few years with an eye toward the promising future directions in the field.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kildishev, Alexander V -- Boltasseva, Alexandra -- Shalaev, Vladimir M -- New York, N.Y. -- Science. 2013 Mar 15;339(6125):1232009. doi: 10.1126/science.1232009.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23493714" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Applied physics. Refractory plasmonics (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-04-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guler, Urcan -- Boltasseva, Alexandra -- Shalaev, Vladimir M -- New York, N.Y. -- Science. 2014 Apr 18;344(6181):263-4. doi: 10.1126/science.1252722.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Electrical & Computer Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA, and Nano-Meta Technologies Inc., 1281 Win Hentschel Boulevard, West Lafayette, IN 47906, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24744364" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Applied physics. The case for plasmonics (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-04-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brongersma, Mark L -- Shalaev, Vladimir M -- New York, N.Y. -- Science. 2010 Apr 23;328(5977):440-1. doi: 10.1126/science.1186905.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geballe Laboratory for Advanced Materials and Materials Science and Engineering Department, Stanford University, Stanford, CA 94305, USA. brongersma@stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20413483" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Materials science. All that glitters need not be gold (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-03-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boltasseva, Alexandra -- Shalaev, Vladimir M -- New York, N.Y. -- Science. 2015 Mar 20;347(6228):1308-10. doi: 10.1126/science.aaa8282.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Electrical & Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA. Nano-Meta Technologies Inc., 1281 Win Hentschel Boulevard, West Lafayette, IN 47906, USA. aeb@purdue.edu. ; School of Electrical & Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA. Nano-Meta Technologies Inc., 1281 Win Hentschel Boulevard, West Lafayette, IN 47906, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25792313" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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