250 citations · 515 across the 10 of their papers we have counts for
10 papers
Ultra-Heavy Dark Matter Search with Electron Microscopy of Geological Quartz
Reza Ebadi, Anubhav Mathur, Erwin H. Tanin +8
Self-interactions within the dark sector could clump dark matter into heavy composite states with low number density, leading to a highly suppressed event rate in existing direct d…
Milky Way Accelerometry via Millisecond Pulsar Timing
David F. Phillips, Aakash Ravi, Reza Ebadi +1
The temporal stability of millisecond pulsars is remarkable, rivaling even some terrestrial atomic clocks at long timescales. Using this property, we show that millisecond pulsars…
Direct Acceleration: Cosmic and Exoplanet Synergies
David Erskine, Alex Kim, Eric Linder +10
Direct measurement of acceleration is a key scientific goal for both cosmology and exoplanets. For cosmology, the concept of redshift drift (more than 60 years old by the 2020s) co…
Probing Dark Matter Using Precision Measurements of Stellar Accelerations
Aakash Ravi, Nicholas Langellier, David F. Phillips +3
Dark matter comprises the bulk of the matter in the universe but its particle nature and cosmological origin remain mysterious. Knowledge of the dark matter density distribution in…
Visible-spanning flat supercontinuum for astronomical applications
Aakash Ravi, Matthias Beck, David F. Phillips +4
We demonstrate a broad, flat, visible supercontinuum spectrum that is generated by a dispersion-engineered tapered photonic crystal fiber pumped by a 1 GHz repetition rate turn-key…
Radio Frequency Magneto-Optical Trapping of CaF with High Density
Loic Anderegg, Benjamin Augenbraun, Eunmi Chae +7
We demonstrate significantly improved magneto-optical trapping of molecules using a very slow cryogenic beam source and RF modulated and DC magnetic fields. The RF MOT confines $1.…
Astro-comb calibrator and spectrograph characterization using a turn-key laser frequency comb
Aakash Ravi, David F. Phillips, Matthias Beck +8
Using a turn-key Ti:sapphire femtosecond laser frequency comb, an off-the-shelf supercontinuum device, and Fabry-Perot mode filters, we report the generation of a 16 GHz frequency…
One dimensional magneto-optical compression of a cold CaF molecular beam
Eunmi Chae, Loic Anderegg, Benjamin L. Augenbraun +7
We demonstrate with a RF-MOT the one dimensional, transverse magneto-optical compression of a cold beam of calcium monofluoride (CaF). By continually alternating the magnetic field…
Laser slowing of CaF molecules to near the capture velocity of a molecular MOT
Boerge Hemmerling, Eunmi Chae, Aakash Ravi +7
Laser slowing of CaF molecules down to the capture velocity of a magneto-optical trap (MOT) for molecules is achieved. Starting from a two-stage buffer gas beam source, we apply fr…
Buffer gas loaded magneto-optical traps for Yb, Tm, Er and Ho
Boerge Hemmerling, Garrett K. Drayna, Eunmi Chae +2
Direct loading of lanthanide atoms into magneto-optical traps (MOTs) from a very slow cryogenic buffer gas beam source is achieved, without the need for laser slowing. The beam sou…