Leo W. Hollberg

TL;DR: In this article, the frequency of the ground-state hyperfine splitting in neutral /sup 133/Cs was compared with that of the electric-quadrupole transition at 282 nm, and it was shown that any fractional time variation of the ratio/spl nu//sub Cs///spl nu/sub Hg/ between the two frequencies to be less than /spl plusmn/7/spl times/10/sup -15/yr/sup −1/ (1/spl sigma/ uncertainty).

TL;DR: In this article, the authors explore methods and limitations for increasing the mode spacing of a 1 GHz optical frequency comb using a Fabry-Perot filter cavity and highlight applications to optical and microwave waveform generation.

TL;DR: The cavity of a 10 GHz optical frequency comb generator centered at 1.55 mum was locked to a narrow-linewidth seed laser within a narrow range of less than 10 MHz for hours of operation.

TL;DR: In this article, it was shown that frequency standards using stable lasers and optical transitions may someday replace modern atomic clocks that are based on microwave transitions, and it was also shown that optical frequency standards with stable laser and optical transition may eventually replace the traditional microwave transition.

TL;DR: This paper presents a meta-analysis of X-ray diffraction analysis of diffraction-gauging data from three radioactively diffracted X-rays from the Large Hadron Collider using a high-resolution 3D image analysis technique.