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Topic Area: Optics
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Displaying records 41 to 50 of 55 records.
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41. Polarized Optical Scattering Signatures from Biological Materials
Topic: Optics
Published: 1/11/2010
Authors: W. E. Martin, E. Hesse, J. H. Hough, William Sparks, C. S. Cockell, Z. Ulanowski, Thomas Avery Germer, B. Kaye
Abstract: The polarization of laser light backscattered from biological samples has been measured over the wavelength range 350 to 850nm. Incident circular, linearly polarized, and unpolarized light produces significant spectrally prominent scattered polari ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906031

42. Probing coherence in microcavity frequency combs via optical pulse shaping
Topic: Optics
Published: 8/29/2012
Authors: Fahmida Ferdous, Houxun H. Miao, Pei-Hsun Wang, Daniel E. Leaird, Kartik A Srinivasan, Lei Chen, Vladimir A Aksyuk, Andrew M Weiner
Abstract: Recent investigations of microcavity frequency combs based on cascaded four-wave mixing have revealed a link between the evolution of the optical spectrum and the observed temporal coherence. Here we study a silicon nitride microresonator for which ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911692

43. Progress Toward Corrugated Feed Horn Arrays in Silicon
Topic: Optics
Published: 12/16/2009
Authors: Joseph Wright Britton, Ki W. Yoon, James A Beall, Daniel Thomas Becker, Hsiao-Mei Cho, Gene C Hilton, Michael David Niemack, Kent D Irwin
Abstract: We are developing monolithic arrays of corrugated feed horns fabricated in silicon for dual-polarization single mode operation at 90, 145 and 220 GHz. The arrays consist of hundreds of platelet feed horns assembled from gold coated stacks of micromac ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903191

44. Rapid, high resolution frequency comb measurements
Topic: Optics
Published: 2/13/2011
Authors: Ian R Coddington, Fabrizio Raphael Giorgetta, Esther Baumann, William C Swann, Nathan Reynolds Newbury
Abstract: Frequency combs serve as an extremely high accuracy reference across broad portions of the optical spectrum. Dual frequency combs harness this accuracy and allow for fast and highly flexible measurements of passive and active sources.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907399

45. Revisiting the Balazs thought experiment in the case of a left-handed material: electromagnetic-pulse-induced displacement of a dispersive, dissipative negative-index slab
Topic: Optics
Published: 3/23/2013
Authors: Henri J Lezec, Kenneth John Chau
Abstract: We propose a set of postulates to describe the mechanical interaction between a plane-wave elec- tromagnetic pulse and a dispersive, dissipative slab having a refractive index of arbitrary sign. The postulates include the Abraham electromagnetic mom ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909848

46. Sensitivity scaling of dual frequency comb spectroscopy
Topic: Optics
Published: 6/15/2010
Authors: Ian R Coddington, William C Swann, Nathan Reynolds Newbury
Abstract: Coherent dual comb spectroscopy can harness many inherent strengths of frequency combs to provide high-resolution, high-accuracy measurements of a sample response (in both magnitude and phase) on a single detector. We will discuss the noise scaling p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905098

47. Single-Photon Propagation Time through Dielectric Bandgaps: Large Variation Due to Small Structural Changes
Topic: Optics
Published: 2/1/2010
Authors: Natalia Borjemscaia Rutter, Sergey V Polyakov, Paul D Lett, Alan L Migdall
Abstract: The transit times of photons traveling through opaque barriers such as dielectric stacks exhibit the Hartman saturation effect. This saturation of the transit time is quite sensitive to the addition of a single dielectric layers, even onto an alread ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901549

48. Slot-mode-coupled optomechanical crystals
Topic: Optics
Published: 10/22/2012
Authors: Marcelo Ishihara Davanco, Jasper Chan, Amir H. Safavi-Naeini, Oskar Painter, Kartik A Srinivasan
Abstract: We design a cavity optomechanical system in which a localized GHz frequency mechanical mode of a nanobeam resonator is evanescently coupled to a high quality factor (Q > 10^6) optical mode of a separate nanobeam optical cavity. Using separate nanobea ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911673

49. Standards for the Optical Detection of Protein Particulates
Topic: Optics
Published: 1/23/2012
Authors: Dean C Ripple, Michael J Carrier, Joshua R. Wayment
Abstract: Particulates in protein therapeutics, composed of agglomerated protein monomers, may cause an immunogenic response in patients. Consequently, industry and the FDA desire more accurate methods for counting and characterizing particulates. Unlike lik ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908731

50. Stimulated Generation of Superluminal Light Pulses via Four-wave Mixing
Topic: Optics
Published: 4/26/2012
Authors: Ryan Thomas Glasser, Ulrich Vogl, Paul D Lett
Abstract: We report on the four-wave mixing of superluminal pulses, in which both the injected and generated pulses involved in the process propagate with negative group velocities. Generated pulses with negative group velocities of up to vg = −c/880 ar ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910231