28 citations · 105 across the 9 of their papers we have counts for
9 papers
Selective ionization of Rydberg atoms to reduce the energy spread of a cold atom focused ion beam
Kaih T. Mitchell, Allan Pennings, Rory W. Speirs +4
The energy spread of a focused ion beam causes chromatic aberration that limits the focal spot size and resolution for imaging and fabrication. Ion beams based on photoionization o…
Color-switching in an optical parametric oscillator using a phase-conjugate mirror
B. E. Anderson, J. Zhao, Z. Zhou +3
We construct a phase-conjugate resonator which passively produces stable pulses that alternate between the probe and the conjugate colors. The requisite phase-conjugate mirror insi…
Heterodyne measurement of sidebands and frequency combs: a derivation
Rory W. Speirs
A mathematical description of heterodyne measurement of an optical frequency comb is presented. It is shown that for a signal beam containing many frequency teeth, the amplitude an…
Two-beam Coupling in the Production of Quantum Correlated Images by Four-wave Mixing
Meng-Chang Wu, Nicholas R. Brewer, Rory W. Speirs +2
We investigate the effect of 2-beam coupling in different imaging geometries in generating intensity-difference squeezing from four-wave mixing (4WM) in Rb atomic vapors. A recentl…
Effect of imperfect homodyne visibility on multi-spatial-mode two-mode squeezing measurements
Prasoon Gupta, Rory W. Speirs, Kevin M. Jones +1
We study the effect of homodyne detector visibility on the measurement of quadrature squeezing for a spatially multi-mode source of two-mode squeezed light. Sources like optical pa…
Twin-beam intensity-difference squeezing below 10 Hz
Meng-Chang Wu, Bonnie L. Schmittberger, Nicholas R. Brewer +3
We report the generation of strong, bright-beam intensity-difference squeezing down to measurement frequencies below 10 Hz. We generate two-mode squeezing in a four-wave mixing (4W…
Stimulated Raman Adiabatic Passage for Improved Performance of a Cold Atom Electron and Ion Source
B. M. Sparkes, D. Murphy, R. J. Taylor +3
We implement high-efficiency coherent excitation to a Rydberg state using stimulated Raman adiabatic passage in a cold atom electron and ion source. We achieve an efficiency of 60%…
Single-Shot Electron Diffraction using a Cold Atom Electron Source
Rory W. Speirs, Corey T. Putkunz, Andrew J. McCulloch +3
Cold atom electron sources are a promising alternative to traditional photocathode sources for use in ultrafast electron diffraction due to greatly reduced electron temperature at…
Photoacoustic Tomography using a Michelson Interferometer with Quadrature Phase Detection
Rory W. Speirs, Alexis I. Bishop
We present a pressure sensor based on a Michelson interferometer, for use in photoacoustic tomography. Quadrature phase detection is employed allowing measurement at any point on t…