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Topic Area: Optics
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Displaying records 11 to 20 of 55 records.
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11. Differential matrices for depolarizing media
Topic: Optics
Published: 3/1/2012
Author: Thomas Avery Germer
Abstract: The evolution of a Stokes vector through depolarizing media is considered. A general form for the differential matrix is derived that is appropriate in the presence of depolarization, and is parameterized in a manner that ensures that it yields, upon ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909647

12. Direct Experimental Observation of the Goos Hanchen Shift
Topic: Optics
Published: 4/9/2008
Authors: H G L Schwefel, W Kohler, Z Lu, Jingyun Fan, L Wang
Abstract: We report a precise direct measurement of the Goos-Hanchen (GH) shift after one reflection off a dielectric interface coated with periodic metal stripes. The spacial displacement of the shift is determined by image analysis. A maximal absolute shift ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842439

13. Dual-comb based measurement of frequency agile lasers.
Topic: Optics
Published: 5/1/2011
Authors: Ian R Coddington, Fabrizio Raphael Giorgetta, Esther Baumann, William C Swann, Nathan Reynolds Newbury
Abstract: Properly stabilized, frequency combs form high accuracy references across much of the optical spectrum. Here we employ dual frequency combs to harness this accuracy for fast and high resolution measurements of swept CW sources.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907442

14. Effect of Bandwidth and Numerical Aperture in Optical Scatterometry
Topic: Optics
Published: 3/1/2010
Authors: Thomas Avery Germer, Heather J Patrick
Abstract: We consider the effects of finite spectral bandwidth and numerical aperture in scatterometry measurements and discuss efficient integration methods based upon Gaussian quadrature in one dimension (for spectral bandwidth averaging) and two dimensions ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905013

15. Effect of Line Width Roughness on Optical Scatterometry Measurements
Topic: Optics
Published: 4/6/2009
Authors: Brent C. Bergner, Thomas Avery Germer, Thomas Suleski
Abstract: Line width roughness (LWR) has been identified as a potential source of uncertainty in scatterometry measurements, and characterizing its effect is required to improve the method s accuracy and to make measurements traceable. In this work, we extend ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901895

16. Effect of Surface Modes on Photon Propagation through Dielectric Bandgaps
Topic: Optics
Published: 10/28/2009
Authors: Natalia Malkova, Sergey V Polyakov, Alan L Migdall, Garnett W Bryant
Abstract: We investigate the Hartman saturation effect of photons traveling through barriers created by bandgaps of multilayer stacks. In particular, we investigate theoretically the recently observed jumps in photon transversal times due to adding a single l ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902593

17. Effective medium approximations for modeling optical reflectance from gratings with rough edges
Topic: Optics
Published: 5/1/2010
Authors: Brent C. Bergner, Thomas Avery Germer, Thomas Suleski
Abstract: Line edge roughness (LER) has been identified as a potential source of uncertainty in optical scatterometry measurements. Characterizing the effect of LER on optical scatterometry signals is required to assess measurement uncertainty. However, rigor ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903990

18. Effects of Roughness on Scatterometry Signatures
Topic: Optics
Published: 5/26/2011
Authors: Martin Foldyna, Thomas Avery Germer, Brent Bergner
Abstract: We used azimuthally-resolved spectroscopic Mueller matrix ellipsometry to study a periodic silicon line structure with and without artificially-generated line edge roughness (LER). Grating profiles were determined from multiple azimuthal configuratio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908805

19. Efficient quantum dot single photon extraction into an optical fiber using a nanophotonic directional coupler
Topic: Optics
Published: 9/19/2011
Authors: Marcelo Ishihara Davanco, Matthew T. Rakher, W. Wegscheider, Dieter Schuh, Antonio Badolato, Kartik A Srinivasan
Abstract: We demonstrate a spectrally broadband and efficient technique for collecting photoluminescence from a single InAs quantum dot directly into a standard single mode optical fiber. In this approach, an optical fiber taper waveguide is placed in contact ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907755

20. Electromagnetic Energy Density in Dispersive and Dissipative Media
Topic: Optics
Published: 6/1/2011
Authors: Frederico D. Nunes, Thiago Vasconcelos, Marcel Bezerra, John Weiner
Abstract: The description of the energy density associated with an electromagnetic field propagating through matter must treat two different phenomena: dispersion, the variation of the refractive index with frequency, and dissipation, the loss of field energy ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906602