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A nanoconfined plasmonic light source for imaging and spectroscopy with ultrahigh spatial and temporal resolution


EMSL Project ID
26701

Abstract

The optical probing of matter with simultaneous nanometer spatial and femtosecond temporal resolution has remained a great challenge. Here, using focused ion beam milling we will tune the optical antenna properties of scanning probe tips to achieve a spatially confined optical excitation with desired frequency and temporal characteristics. This provides access to the dynamics of mesoscopic phenomena at dimensions of the electron or phonon scattering length scales for the first time. In addition, by tailoring the optical properties of singly crystalline nanotriangles, -cubes, or -rods provides we design new probes for nanospectroscopy. This offers a high technological potential for molecular sensors, biomedical diagnostics, optical waveguides, or switches.

Project Details

Project type
Capability Research
Start Date
2007-10-01
End Date
2009-09-30
Status
Closed

Team

Principal Investigator

Bernd Raschke
Institution
University of Colorado at Boulder

Team Members

Erik Josberger
Institution
University of Washington

Brian Burkholder
Institution
University of Washington

Robert Olmon
Institution
University of Colorado at Boulder

Related Publications

Neacsu CC, S Berweger, RL Olmon, LV Saraf, C Ropers, and BM Raschke. 2010. "Near-field Localization in Plasmonic Superfocusing: a Nanoemitter on a Tip ." Nano Letters 10(2):592–596. doi:10.1021/nl903574a
Olmon RL, M Rang, PM Krenz, BA Lail, LV Saraf, GD Boreman, and BM Raschke. 2010. "Determination of Electric-Field, Magnetic-Field, and Electric-Current Distributions of Infrared Optical Antennas: A Near-Field Optical Vector Network Analyzer." Physical Review Letters 105(16):Article No.: 167403. doi:10.1103/PhysRevLett.105.167403