3 citations · 3 across the 2 of their papers we have counts for
6 papers
Can amplified spontaneous emission produce intense laser guide stars for adaptive optics?
P. Hickson, J. Hellemeier, R. Yang
Adaptive optics (AO) is a key technology for ground-based optical and infrared astronomy, providing high angular resolution and sensitivity. AO systems employing laser guide stars…
Measuring line-of-sight sodium density structure using laser guide stars
Joschua A. Hellemeier, Domenico Bonaccini Calia, Paul Hickson +2
The performance of adaptive optics systems employing sodium laser guide stars can be improved by continuously monitoring the vertical density structure of mesospheric sodium along…
Frequency chirped continuous-wave sodium laser guide stars
F. Pedreros Bustos, R. Holzlöhner, S. Rochester +3
We numerically study a method to increase the photon return flux of continuous-wave laser guide stars using one-dimensional atomic cooling principles. The method relies on chirping…
Optical turbulence at Ali, China -- Results from the first year of lunar scintillometer observations
Paul Hickson, Lu Feng, Joschua A. Hellemeier +6
The location of an astronomical observatory is a key factor that affects its scientific productivity. The best astronomical sites are generally those found at high altitudes. Sever…
Polarization-driven spin precession of mesospheric sodium atoms
Felipe Pedreros, Domenico Bonaccini Calia, Dmitry Budker +5
We report experimental results on the first on-sky observation of atomic spin precession of mesospheric sodium driven by polarization modulation of a continuous-wave laser. The mag…
Remote sensing of geomagnetic fields and atomic collisions in the mesosphere
Felipe Pedreros Bustos, Domenico Bonaccini Calia, Dmitry Budker +5
Magnetic-field sensing has contributed to the formulation of the plate-tectonics theory, the discovery and mapping of underground structures on Earth, and the study of magnetism in…