Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > CNST and University of Maryland Researchers Bridge Nanophotonics and Conventional Optics with Surface Plasmonic Lenses Fabricated on Optical Fibers

Abstract:
Researchers from the University of Maryland and the NIST Center for Nanoscale Science and Technology have experimentally demonstrated superfocusing of light using an optical fiber-based surface plasmonic (SP) lens.

CNST and University of Maryland Researchers Bridge Nanophotonics and Conventional Optics with Surface Plasmonic Lenses Fabricated on Optical Fibers

Gaithersburg, MD | Posted on October 27th, 2011

Optical fibers have been used as low-loss light waveguides for decades. However light strongly diverges at the fiber end, limiting the utility of fiber optics for applications that require a high numerical aperture as well as a sub-diffraction-limit focal size. As described in a recent publication in Optics Express,* this limitation can be overcome by fabricating an SP lens directly on the end of an optical fiber. The fiber-based SP lens is composed of a set of concentric annular slits with varied nanoscale widths cut through a uniform gold coating at the end face of a single-mode optical fiber. The slits were fabricated using the focused ion beam system in the CNST NanoFab. When the light in the fiber impinges on the SP lens, surface plasmon polaritons (SPPs) at the slit edges are excited. Because the slit widths are smaller than the light wavelength, the light passes through the slits only as SPP modes that are coupled back to optical waves at the exit of the slits. Moreover, the SPP propagation delay can be controlled by the width of the slits in order to induce a curved wavefront of exiting optical waves and thereby achieve a tight focus at the desired distance. The researcher team has experimentally demonstrated a transverse spot size of 450 nm 60 nm, which is below the diffraction limit for the 808 nm light. Their fiber-based SP lens design can be readily integrated into many existing systems to bridge nanophotonics and conventional optics. Possible applications include laser nanofabrication, optical trapping, high-density optical storage, and high-resolution fluorescence sensing. The research team is currently exploring applications for fiber based SP lenses for both high-resolution imaging and biological sensing.

*Far-field superfocusing with an optical fiber based surface plasmonic lens made of nanoscale concentric annular slits, Y. Liu, H. Xu, F. Stief, N. Zhitenev, and M. Yu, Optics Express 19, 20233-20243 (2011).

####

About National Institute of Standards and Technology (NIST)
The National Institute of Standards and Technology (NIST) is an agency of the U.S. Department of Commerce.

For more information, please click here

Contacts:
Nikolai Zhitenev
301-975-6039

Copyright © National Institute of Standards and Technology (NIST)

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Journal Web Site

NIST Publication Database

Related News Press

News and information

Oxford Instruments Asylum Research and McGill University Announce the McGill AFM Summer School and Workshop, May 12-13, 2016 May 4th, 2016

The intermediates in a chemical reaction photographed 'red-handed' Researchers at the UPV/EHU-University of the Basque Country have for the first time succeeded in imaging all the steps in a complex organic reaction and have resolved the mechanisms that explain it May 4th, 2016

Imaging

Oxford Instruments Asylum Research and McGill University Announce the McGill AFM Summer School and Workshop, May 12-13, 2016 May 4th, 2016

The intermediates in a chemical reaction photographed 'red-handed' Researchers at the UPV/EHU-University of the Basque Country have for the first time succeeded in imaging all the steps in a complex organic reaction and have resolved the mechanisms that explain it May 4th, 2016

New tool allows scientists to visualize 'nanoscale' processes May 4th, 2016

Sensors

Quantum sensors for high-precision magnetometry of superconductors May 3rd, 2016

Making invisible physics visible: The Jayich Lab has created a new sensor technology that captures nanoscale images with high spatial resolution and sensitivity May 2nd, 2016

Electrically Conductive Graphene Ink Enables Printing of Biosensors April 23rd, 2016

Highlights from the Graphene Flagship April 22nd, 2016

Discoveries

The intermediates in a chemical reaction photographed 'red-handed' Researchers at the UPV/EHU-University of the Basque Country have for the first time succeeded in imaging all the steps in a complex organic reaction and have resolved the mechanisms that explain it May 4th, 2016

New tool allows scientists to visualize 'nanoscale' processes May 4th, 2016

A compact, efficient single photon source that operates at ambient temperatures on a chip: Highly directional single photon source concept is expected to lead to a significant progress in producing compact, cheap, and efficient sources of quantum information bits for future appls May 3rd, 2016

Nuclear pores captured on film: Using an ultra fast-scanning atomic force microscope, researchers from the University of Basel have filmed 'living' nuclear pore complexes at work for the first time May 3rd, 2016

Announcements

Oxford Instruments Asylum Research and McGill University Announce the McGill AFM Summer School and Workshop, May 12-13, 2016 May 4th, 2016

The intermediates in a chemical reaction photographed 'red-handed' Researchers at the UPV/EHU-University of the Basque Country have for the first time succeeded in imaging all the steps in a complex organic reaction and have resolved the mechanisms that explain it May 4th, 2016

New tool allows scientists to visualize 'nanoscale' processes May 4th, 2016

FEI Launches Apreo Industry-Leading Versatile, High-Performance SEM: The Apreo SEM provides high-resolution surface information with excellent contrast, and the flexibility to accommodate a large range of samples, applications and conditions May 4th, 2016

Tools

Oxford Instruments Asylum Research and McGill University Announce the McGill AFM Summer School and Workshop, May 12-13, 2016 May 4th, 2016

The intermediates in a chemical reaction photographed 'red-handed' Researchers at the UPV/EHU-University of the Basque Country have for the first time succeeded in imaging all the steps in a complex organic reaction and have resolved the mechanisms that explain it May 4th, 2016

New tool allows scientists to visualize 'nanoscale' processes May 4th, 2016

FEI Launches Apreo Industry-Leading Versatile, High-Performance SEM: The Apreo SEM provides high-resolution surface information with excellent contrast, and the flexibility to accommodate a large range of samples, applications and conditions May 4th, 2016

Photonics/Optics/Lasers

A compact, efficient single photon source that operates at ambient temperatures on a chip: Highly directional single photon source concept is expected to lead to a significant progress in producing compact, cheap, and efficient sources of quantum information bits for future appls May 3rd, 2016

Exploring phosphorene, a promising new material April 29th, 2016

Researchers create a first frequency comb of time-bin entangled qubits: Discovery is a significant step toward multi-channel quantum communication and higher capacity quantum computers April 28th, 2016

Hybrid nanoantennas -- next-generation platform for ultradense data recording April 28th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic