144 citations · 493 across the 11 of their papers we have counts for
11 papers
Experimental and theoretical study of dynamic polarizabilities in the - clock transition in rubidium-87 and determination of E1 matrix elements
Rhona Hamilton, Benjamin M. Roberts, Sarah K. Scholten +4
The interaction between light and an atom causes perturbations in the atom's energy levels, known as the light-shift. These light-shifts are a key source of inaccuracy in atomic cl…
Spectroscopy and laser cooling on the line in Yb via an injection-locked diode laser at 1111.6nm
Nikita Kostylev, Clayton R. Locke, Michael E. Tobar +1
We generate 555.8nm light with sub-MHz linewidth through the use of laser injection-locking of a semiconductor diode at 1111.6nm, followed by frequency doubling in a resonant cavit…
Direct comparison of a Ca+ single ion clock against a Sr optical lattice clock
Kensuke Matsubara, Hidekazu Hachisu, Ying Li +7
Optical frequency comparison of the 40Ca+ clock transition ν_{Ca} (2S1/2-2D5/2, 729nm) against the 87Sr optical lattice clock transition ν_{Sr}(1S0-3P0, 698nm) has resulted in a fr…
Laser frequency comb techniques for precise astronomical spectroscopy
Michael T. Murphy, Clayton R. Locke, Philip S. Light +2
Precise astronomical spectroscopic analyses routinely assume that individual pixels in charge-coupled devices (CCDs) have uniform sensitivity to photons. Intra-pixel sensitivity (I…
Improved test of Lorentz Invariance in Electrodynamics using Rotating Cryogenic Sapphire Oscillators
Paul L. Stanwix, Michael E. Tobar, Peter Wolf +2
We present new results from our test of Lorentz invariance, which compares two orthogonal cryogenic sapphire microwave oscillators rotating in the lab. We have now acquired over 1…
Long Term Operation and Performance of Cryogenic Sapphire Oscillators
M. E. Tobar, E. N. Ivanov, C. R. Locke +12
Cryogenic Sapphire Oscillators (CSO) developed at UWA have now been in operation around the world continuously for many years. Such oscillators, due to their excellent spectral pur…