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Title: Mapping local optical densities of states in silicon photonic structures with nanoscale electron spectroscopy

Abstract

Relativistic electrons in a structured medium generate radiative losses such as Cherenkov and transition radiation that act as a virtual light source, coupling to the photonic densities of states. The effect is most pronounced when the imaginary part of the dielectric function is zero, a regime where in a nonretarded treatment no loss or coupling can occur. Maps of the resultant energy losses as a sub-5 nm electron probe scans across finite waveguide structures reveal spatial distributions of optical modes in a spectral domain ranging from near infrared to far ultraviolet.

Authors:
; ;  [1]; ;  [2];  [3]
  1. School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853 (United States)
  2. Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States)
  3. Department of Physics, Columbia University, New York, New York 10027 (United States)
Publication Date:
OSTI Identifier:
21366701
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 81; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevB.81.113102; (c) 2010 The American Physical Society; Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CHERENKOV RADIATION; COUPLING; DENSITY; DIELECTRIC MATERIALS; ELECTRON PROBES; ELECTRON SPECTROSCOPY; ELECTRONS; FAR ULTRAVIOLET RADIATION; INFRARED SPECTRA; LIGHT SOURCES; LOSSES; OPACITY; OPTICAL MODES; RELATIVISTIC RANGE; SILICON; SPATIAL DISTRIBUTION; TRANSITION RADIATION; VISIBLE RADIATION; WAVEGUIDES; DISTRIBUTION; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; FERMIONS; LEPTONS; MATERIALS; OPTICAL PROPERTIES; OSCILLATION MODES; PHYSICAL PROPERTIES; PROBES; RADIATION SOURCES; RADIATIONS; SEMIMETALS; SPECTRA; SPECTROSCOPY; ULTRAVIOLET RADIATION

Citation Formats

Cha, Judy J, Couillard, Martin, Muller, David A, Zongfu, Yu, Shanhui, Fan, and Smith, Eric. Mapping local optical densities of states in silicon photonic structures with nanoscale electron spectroscopy. United States: N. p., 2010. Web. doi:10.1103/PHYSREVB.81.113102.
Cha, Judy J, Couillard, Martin, Muller, David A, Zongfu, Yu, Shanhui, Fan, & Smith, Eric. Mapping local optical densities of states in silicon photonic structures with nanoscale electron spectroscopy. United States. https://doi.org/10.1103/PHYSREVB.81.113102
Cha, Judy J, Couillard, Martin, Muller, David A, Zongfu, Yu, Shanhui, Fan, and Smith, Eric. 2010. "Mapping local optical densities of states in silicon photonic structures with nanoscale electron spectroscopy". United States. https://doi.org/10.1103/PHYSREVB.81.113102.
@article{osti_21366701,
title = {Mapping local optical densities of states in silicon photonic structures with nanoscale electron spectroscopy},
author = {Cha, Judy J and Couillard, Martin and Muller, David A and Zongfu, Yu and Shanhui, Fan and Smith, Eric},
abstractNote = {Relativistic electrons in a structured medium generate radiative losses such as Cherenkov and transition radiation that act as a virtual light source, coupling to the photonic densities of states. The effect is most pronounced when the imaginary part of the dielectric function is zero, a regime where in a nonretarded treatment no loss or coupling can occur. Maps of the resultant energy losses as a sub-5 nm electron probe scans across finite waveguide structures reveal spatial distributions of optical modes in a spectral domain ranging from near infrared to far ultraviolet.},
doi = {10.1103/PHYSREVB.81.113102},
url = {https://www.osti.gov/biblio/21366701}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 11,
volume = 81,
place = {United States},
year = {Mon Mar 15 00:00:00 EDT 2010},
month = {Mon Mar 15 00:00:00 EDT 2010}
}