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Topic Area: Optical Technology
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Displaying records 1 to 10 of 24 records.
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1. A deep-UV optical frequency comb at 205 nm
Topic: Optical Technology
Published: 5/25/2009
Authors: Scott A Diddams, E Peters, P Fendel, S Reinhardt, T W Hansch, T Udem
Abstract: By frequency quadrupling a picosecond pulse train from a Ti:sapphire laser at 820 nm we generate a frequency comb at 205 nm with nearly bandwidth-limited pulses. The nonlinear frequency conversion is accomplished by two successive frequency doubling ...

2. An example crossover experiment for testing new vicarious calibration techniques for satellite ocean color radiometry
Topic: Optical Technology
Published: 10/1/2010
Authors: Kenneth Voss, Scott McLean, Stephanie J Flora, Michael Feinholz, Mark A. Yarbrough, Charles Trees, Mike Twardowski, Dennis Clark, Marlon Lewis, Bettye C Johnson
Abstract: Vicarious calibration of ocean color satellites involves accurate surface measurements of water-leaving radiance to update and improve the system calibration of ocean color satellite sensors. An experiment was performed to compare a free-fall techn ...

3. Chapter 13. Color Quality of White LEDs
Topic: Optical Technology
Published: 5/24/2013
Author: Yoshihiro Ohno
Abstract: This chapter overviews the fundamentals of chromaticity and color rendering as the two important aspects of color quality of light sources for general illumination, with special focus on the use for solid state light sources. The section for chrom ...

4. Characterization and Control of Lipid Layer Fluidity in Hybrid Bilayer Membranes
Topic: Optical Technology
Published: 1/31/2007
Authors: Neil A. Anderson, Lee J Richter, John C. Stephenson, Kimberly A Briggman
Abstract: The main gel-to-liquid-crystal (LC) phase transition temperature, Tm, of the distal lipid layer in hybrid bilayer membranes (HBMs) under water was investigated using vibrational sum frequency spectroscopy (VSFS). VSFS has unique sensitivity to order ...

5. Cholesterol/Phospholipid Interactions in Hybrid Bilayer Membranes
Topic: Optical Technology
Published: 5/25/2007
Authors: Dustin Levy, Kimberly A Briggman
Abstract: The interactions between cholesterol and saturated phospholipids in hybrid bilayer membranes (HBMs) were investigated using the interface-sensitive technique of vibrational sum frequency spectroscopy (VSFS). The unique sensitivity of VSFS to order/di ...

6. Development of Ultrafast Photochromic Organometallics and Photoinduced Linkage Isomerization of Arene Chromium Carbonyl Derivatives
Topic: Optical Technology
Published: 2/20/2009
Authors: Tung T. To, Edwin J Heilweil, Duke Charles, Ruddick Kristie, Webster Edwin Charles, Burkey Theodore
Abstract: We review recent studies of processes relevant to photoinduced linkage isomerization of organometallic systems with the goal of preparing organometallics with an efficient and ultrafast photochromic response. The organometallic system thus corr ...

7. Development of in-situ calibration method for current-to-voltage converters for high-accuracy SI-traceable low-DC-current measurements
Topic: Optical Technology
Published: 9/20/2013
Authors: George P Eppeldauer, Howard W Yoon, Dean G Jarrett, Thomas C Larason
Abstract: For photocurrent measurements with low uncertainties, wide-dynamic range reference current-to-voltage converters and a new converter calibration method have been developed at the National Institute of Standards and Technology (NIST). The high feedba ...

8. Extension of the NIST tristimulus colorimeter for solid-state light source measurements
Topic: Optical Technology
Published: 5/29/2009
Authors: George P Eppeldauer, Carl C Miller, Thomas C Larason, Yoshihiro Ohno
Abstract: In order to obtain improved color measurement uncertainties for solid state light (SSL) sources, the second generation tristimulus colorimeter of NIST has been extended with a fifth channel to perform efficient matrix corrections for the spectral mis ...

9. Femtosecond frequency comb measurement of absolute frequencies and hyperfine coupling constants in cesium vapor
Topic: Optical Technology
Published: 4/29/2010
Authors: Jason Stalnaker, Vela Mbele, Vladislav Gerginov, Tara Michele Fortier, Scott A Diddams, Leo Hollberg, C E Tanner
Abstract: We report measurements of absolute transition frequencies and hyperfine coupling constants for the 8S1/2 , 9S1/2 , 7D3/2 , and 7D5/2 states in 133 Cs vapor. The stepwise excitation through either the 6P1/2 or 6P3/2 intermediate state is perform ...

10. Harnessing 3D Scattered Optical Fields for sub-20 nm Defect Detection
Topic: Optical Technology
Published: 6/24/2013
Authors: Bryan M Barnes, Martin Y Sohn, Francois R. Goasmat, Hui Zhou, Richard M Silver, Abraham Arceo
Abstract: Experimental imaging at =193 nm of sub-resolved defects performed at several focus positions yields a volume of spatial and intensity data. Defects are located in a differential volume, given a reference, with up to 5x increase in sensitivity ...

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