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You searched on: Topic Area: Optics

Displaying records 21 to 30 of 69 records.
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21. Nanoscale Imaging of Photocurrent and Efficiency in CdTe Solar Cells
Topic: Optics
Published: 10/15/2014
Authors: Leite Marina, maxim abashin, Henri J Lezec, anthony gianfrancesco, Talin Alec, Nikolai B Zhitenev
Abstract: The local collection characteristics of grain interiors and grain boundaries in thin film CdTe polycrystalline solar cells are investigated using scanning photocurrent microscopy. The carriers are locally generated by light injected through a small ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916527

22. Comb-calibrated laser ranging for three-dimensional surface profiling with micrometer-level precision at a distance
Topic: Optics
Published: 10/6/2014
Authors: Esther Baumann, Fabrizio Raphael Giorgetta, Jean-Daniel Deschenes, William C Swann, Ian R Coddington, Nathan Reynolds Newbury
Abstract: Non-contact surface mapping at a distance is interesting in diverse applications including industrial metrology, manufacturing, forensics, and artifact documentation and preservation. Frequency modulated continuous wave (FMCW) laser detection and ra ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916470

23. TRANSITIONING FROM RESISTANCE DEVICES TO PHOTONIC DEVICES FOR TEMPERATURE MEASUREMENTS
Topic: Optics
Published: 9/12/2014
Authors: Zeeshan Ahmed, Gregory F Strouse
Abstract: For the past century, industrial temperature measurements have relied on resistance measurement of a thin metal wire or filament whose resistance varies with temperature. Though resistance thermometers can routinely measure industrial temperatures wi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915127

24. Absolute pulse energy measurements of soft x-rays at the Linac Coherent Light Source
Topic: Optics
Published: 8/25/2014
Authors: Uwe Arp, Alexander Sorokin, Ulf Jastrow, Pavle Jurani?, Svea Kreis, Mathias Richter, Yiping Feng, Dennis Nordlund, Kai Tiedtke, Philip Heimann, Bob Nagler, Hae Ja Lee, Stephanie Mack, Marco Cammarata, Oleg Krupin, Marc Messerschmidt, Michael Holmes , Michael Rowen, William Schlotter, Stefan Moeller, Joshua Turner
Abstract: This paper reports novel measurements of x-ray optical radiation on an absolute scale from a recently developed source of radiation generated in the soft x-ray regime of a free electron laser. We give a brief description of the physics behind the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916074

25. Speckle phase noise in coherent laser ranging: fundamental precision limitations
Topic: Optics
Published: 8/8/2014
Authors: Esther Baumann, Jean-Daniel Deschenes, Fabrizio Raphael Giorgetta, William C Swann, Ian R Coddington, Nathan Reynolds Newbury
Abstract: Frequency-modulated continuous-wave laser detection and ranging (FMCW LADAR) measures the range to a surface through coherent detection of the backscattered light from a frequency-swept laser source. The ultimate limit to the range precision of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915862

26. High-Speed Coherent Raman Fingerprint Imaging of Biological Tissues
Topic: Optics
Published: 7/20/2014
Authors: Charles H Camp, Young Jong Lee, John Michael Heddleston, Christopher Michael Hartshorn, Angela R Hight Walker, Jeremy N. Rich, Justin D. Lathia, Marcus T Cicerone
Abstract: We have developed a coherent Raman imaging platform using broadband coherent anti-Stokes Raman scattering (BCARS) that provides an unprecedented combination of speed, sensitivity, and spectral breadth. The system utilizes a unique configuration of la ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914850

27. Visible-frequency asymmetric transmission devices incorporating a hyperbolic metamaterial
Topic: Optics
Published: 6/17/2014
Authors: Ting Xu, Henri J Lezec
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915821

28. Ultra-Sensitive Chip-Based Photonic Temperature Sensor Using Ring Resonator Structures
Topic: Optics
Published: 2/3/2014
Authors: Haitan Xu, Mohammad Hafezi, Jingyun Fan, Jacob M Taylor, Gregory F Strouse, Zeeshan Ahmed
Abstract: Temperature is one of the most measured quantity in the world, second only to time. Recently there has been considerable interest in developing photonic temperature sensors to leverage advancements in frequency metrology. Here we show that Silico ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914245

29. Si3N4 optomechanical crystals in the resolved-sideband regime
Topic: Optics
Published: 1/27/2014
Authors: Marcelo Ishihara Davanco, Serkan Ates, Yuxiang Liu, Kartik A Srinivasan
Abstract: We demonstrate sideband-resolved Si3N4 optomechanical crystals supporting 105 quality factor optical modes at 980 nm, coupled to approximately 4 GHz frequency mechanical modes with quality factors of approximately 3000. Optomechanical electromagneti ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914944

30. First Report on Quantum Dot Coated CMOS CID Arrays for the UV and VUV
Topic: Optics
Published: 12/13/2013
Authors: Uwe Arp, Robert Edward Vest, Zoran Ninkov, Ross Robinson, Suraj Bhaskaran
Abstract: A technique has been developed for coating commercial off the shelf (COTS) detector arrays with a thin, uniform layer of quantum dots. The quantum deposition is accomplished using an Optomec Aerosol Jet rapid prototyping system. When illuminated by U ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914748



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