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Topic Area: Optical Physics
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Displaying records 21 to 30 of 67 records.
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21. Femtosecond frequency comb measurement of absolute frequencies and hyperfine coupling constants in cesium vapor
Topic: Optical Physics
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 ...

22. Femtosecond-Laser-Based Optical Clockwork with Instability < 6.3 {multiply} 10^u-16^ in 1 s
Topic: Optical Physics
Published: 1/1/2002
Authors: Scott A Diddams, Leo W. Hollberg, L -S Ma, Lennart Robertsson

23. Fiber lasers for frequency standards in optical communications
Topic: Optical Physics
Published: 2/24/2008
Authors: Nathan Reynolds Newbury, William C Swann, Ian R Coddington, Paul A Williams
Abstract: Optical light with millihertz relative frequency stabilities and subfemtosecond timing jitter can be produced from stabilized cw or mode-locked fiber lasers. We will discuss the generation, fiber-optic distribution and some applications of these cohe ...

24. First Report on Quantum Dot Coated CMOS CID Arrays for the UV and VUV
Topic: Optical Physics
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 ...

25. Harnessing 3D Scattered Optical Fields for sub-20 nm Defect Detection
Topic: Optical Physics
Published: 6/24/2013
Authors: Bryan M Barnes, Martin Y Sohn, Francois R. Goasmat, Hui H. 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 ...

26. High-resolution single-mode fiber-optic distributed Raman sensor for absolute temperature measurement using superconducting nanowire single-photon detectors
Topic: Optical Physics
Published: 11/17/2011
Authors: Michael G. Tanner, Shellee Dawn Dyer, Burm Baek, Robert Hadfield, Sae Woo Nam
Abstract: We demonstrate a distributed fiber Raman sensor for absolute temperature measurement with spatial resolution on the order of 1 cm at 1550 nm wavelength in single mode fiber using superconducting nanowire single photon detectors. Rapid measurements ar ...

27. Improving squeezing purity from a KNbO^u3^ crystal by temperature tuning
Topic: Optical Physics
Published: 5/4/2008
Authors: Thomas Gerrits, Tracy S. Clement, Scott Glancy, Richard P Mirin, Sae Woo Nam, Emanuel Knill
Abstract: We show a method to increase the purity of a squeezed state generated by a femtosecond laser and down-conversion crystal. The method relies on temperature tuning the down- and up-converting crystals, which changes the spatial and spectral output mode ...

28. Integral Equations for 3-D Scattering: Finite Strip on a Substrate
Topic: Optical Physics
Published: 11/28/2008
Author: Egon Marx
Abstract: Singular integral equations that determine the exact fields scattered by a dielectric or conducting finite strip on a substrate are presented. The computation of the image of such a scatterer from these fields by Fourier optics methods is also shown ...

29. Long distance optical frequency transfer over fiber: predicting the frequency stability from the fiber noise
Topic: Optical Physics
Published: 5/19/2008
Authors: Nathan Reynolds Newbury, Paul A Williams, William C Swann
Abstract: We have recently demonstrated the coherent transfer of an optical signal over a 251 km link of optical fiber using the standard Doppler-cancellation approach to remove the effects of the fiber-link noise. The fundamental limit to the frequency instab ...

30. Microresonator based optical frequency combs
Topic: Optical Physics
Published: 4/29/2011
Authors: Scott A Diddams, T. J. Klippenberg
Abstract: Optical frequency combs based on mode-locked laser sources have provided unprecedented measurement capabilities for optical frequencies, enabling new applications in a wide range of topics that include atomic clocks, ultracold gases, molecular finge ...

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