103 citations · 121 across the 5 of their papers we have counts for
5 papers
Laser Guide Star uplink beam: scattering and Raman emission measurements with the 10.4m Gran Telescopio CANARIAS
G. Lombardi, D. Bonaccini Calia, M. Centrone +2
Laser Guide Star Adaptive Optics (LGS-AO) is becoming routine in several astronomical observatories. The use of powerful lasers generates sensible Raman emissions on the uplink las…
Laser guide star return-flux gain from frequency chirping
J. Hellemeier, M. Enderlein, M. Hager +7
Spectral hole burning reduces sodium laser guide star efficiency. Due to photon recoil, atoms that are initially resonant with the single-frequency laser get Doppler shifted out of…
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…
On-sky demonstration of matched filters for wavefront measurements using ELT-scale elongated laser guide stars
A. G. Basden, L. Bardou, D. Bonaccini Calia +18
The performance of adaptive optics systems is partially dependant on the algorithms used within the real-time control system to compute wavefront slope measurements. We demonstrate…
Optimization of cw sodium laser guide star efficiency
R. Holzlohner, S. M. Rochester, D. Bonaccini Calia +3
Context: Sodium laser guide stars (LGS) are about to enter a new range of laser powers. Previous theoretical and numerical methods are inadequate for accurate computations of the r…