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Topic Area: Optics
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Displaying records 21 to 30 of 71 records.
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21. 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 ...

22. 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 ...

23. 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 ...

24. 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 ...

25. Enhanced coupling between light and surface plasmons by nanostructured Fabry-Pérot resonator
Topic: Optics
Published: 9/26/2011
Authors: Brian S. Dennis, Vladimir A Aksyuk, Michael Haftel, Stefan T. Koev, Girsh Blumberg
Abstract: It is recognized that surface plasmons (SPs),which can be present on particulate, smooth, or corrugated metallic surfaces, have enormous potential in the fields of novel nano-optical and opto-electronic devices, as well as in spectroscopic, biologic ...

26. Exotic behavior in quantum dot mode-locked lasers: dark pulses and bistability
Topic: Optics
Published: 5/24/2012
Authors: Kevin Lawrence Silverman, Mingming M. Feng, Richard P Mirin, Steven T Cundiff
Abstract: Passively mode-locked semiconductor lasers with self-assembled quantum dot active regions can be operated in exotic output modes, stabilized by the complex gain and absorption dynamics inherent in these structures. One such device emits dark pulses ...

27. Experimental demonstration of a receiver beating the standard quantum limit for multiple nonorthogonal coherent-state discrimination
Topic: Optics
Published: 1/6/2013
Authors: Francisco E. Becerra Chavez, Jingyun Fan, Gerald Baumgartner, Julius Goldhar, Jonathan Kosloski, Alan L Migdall
Abstract: The measurement of the state of a quantum system with inherent quantum uncertainty (noise) approaching the ultimate physical limits is of both technological and fundamental interest. Quantum noise prevents any mutually nonorthogonal quantum states ...

28. Fast and accurate comb-based spectral analysis of a frequency agile CW laser
Topic: Optics
Published: 5/1/2010
Authors: Fabrizio Raphael Giorgetta, Ian R Coddington, Esther Baumann, William C Swann, Nathan Reynolds Newbury
Abstract: The time-resolved frequency spectrum of a frequency agile CW laser is measured with a 300{mu}s update rate and 3 kHz resolution/accuracy over a 28 nm wavelength range with a coherent dual comb setup.

29. Feedback Control of Optically Trapped Particles
Topic: Optics
Published: 12/17/2011
Authors: Jason John Gorman, Arvind Kumar Balijepalli, Thomas W LeBrun
Abstract: Optical trapping is a method for manipulating micro- and nanoscale particles that is widely used in biophysics and colloid science, among other areas. This method uses optical forces to confine the position of a particle to a localized region, which ...

30. Fiber optic measurement considerations for the aerospace industry: Lessons learned from telecommunications
Topic: Optics
Published: 9/30/2008
Authors: Paul A Williams, Timothy J Drapela
Abstract: A brief history of measurement work for fiber optic telecommunications with application toward fiber optics in avionics

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