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Topic Area: Optical Technology

Displaying records 11 to 20 of 22 records.
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11. Mid-IR frequency comb upconversion spectroscopy
Topic: Optical Technology
Published: 5/16/2010
Authors: Todd Johnson, Scott A Diddams
Abstract: We present a mid-infrared frequency comb generated via differency frequency mixing of a Yb femtosecond fiber laser. After passing through a methane gas sample, the MIR comb is upconverted and dispersed onto a CCD for detection.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906157

12. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904617

13. Strategic Plan 2010
Topic: Optical Technology
Published: 4/21/2010
Author: Gerald T Fraser
Abstract: The Optical Technology Division s 2010 Strategic Plan defines the Mission, Vision, and Strategic Elements for the Division. The Strategic Elements consist of Optical Radiation Standards, Optical Measurement Methods, and Optical Measurement Services. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905286

14. Infrared time domain spectroscopy with synchronized frequency combs
Topic: Optical Technology
Published: 1/29/2010
Authors: Nathan Reynolds Newbury, Ian R Coddington, William C Swann
Abstract: We describe a frequency-comb based system for time-domain spectroscopy in the near infrared. Our configuration implements synchronous, repetitive sampling of the time domain signature for real-time coherent signal averaging and improved signal-to-noi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903832

15. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903041

16. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904616

17. Reference Ballistic Chronograph
Topic: Optical Technology
Published: 4/30/2009
Authors: Nicholas G Paulter Jr, Donald R Larson
Abstract: A ballistic chronograph with a measurement uncertainty of less than +/- 0.1 m/s has been designed, constructed and tested. Because of this low uncertainty, this chronograph can be used as a reference to calibrate and/or characterize the performance o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32808

18. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841065

19. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841051

20. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100963



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