Shack-Hartmann wavefront reconstruction with elongated sodium laser guide stars: improvements with priors and noise correlations

2008 ◽  
Author(s):  
Michel Tallon ◽  
Isabelle Tallon-Bosc ◽  
Clémentine Béchet ◽  
Eric Thiébaut
Keyword(s):  
Wavefront Reconstruction ◽  
Laser Guide Stars ◽  
Laser Guide ◽  
Sodium Laser

Simulations of continuous-wave sodium laser guide stars with polarization modulation at Larmor frequency

2018 ◽  
Author(s):  
Felipe Pedreros Bustos ◽  
Ronald Holzlöhner ◽  
Domenico Bonaccini Calia ◽  
Joschua Hellemeier ◽  
Simon Rochester ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Larmor Frequency ◽  
Polarization Modulation ◽  
Laser Guide Stars ◽  
Laser Guide ◽  
Sodium Laser

Frequency chirped continuous-wave sodium laser guide stars: modeling and optimization

2020 ◽  
Vol 37 (4) ◽  
pp. 1208
Author(s):  
F. Pedreros Bustos ◽  
R. Holzlöhner ◽  
S. Rochester ◽  
D. Bonaccini Calia ◽  
J. Hellemeier ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Laser Guide Stars ◽  
Modeling And Optimization ◽  
Laser Guide ◽  
Sodium Laser

scholarly journals Effects of laser beam propagation and saturation on the spatial shape of sodium laser guide stars

2009 ◽  
Vol 17 (7) ◽  
pp. 4920 ◽  
Author(s):  
Fabien Marc ◽  
Hugues Guillet de Chatellus ◽  
Jean-Paul Pique
Keyword(s):  
Laser Beam ◽  
Beam Propagation ◽  
Laser Beam Propagation ◽  
Laser Guide Stars ◽  
Spatial Shape ◽  
Laser Guide ◽  
Sodium Laser

The Four-Laser Guide Star Facility: Design considerations and system implementation

2014 ◽  
Vol 3 (3) ◽  
Author(s):  
Domenico Bonaccini Calia ◽  
Wolfgang Hackenberg ◽  
Ronald Holzlöhner ◽  
Steffan Lewis ◽  
Thomas Pfrommer
Keyword(s):  
Adaptive Optics ◽  
Technical Solution ◽  
Laser Guide Star ◽  
Laser Guide Stars ◽  
Very Large Telescope ◽  
Guide Star ◽  
Laser Guide ◽  
Sodium Laser ◽  
Optical Telescopes ◽  
Atmospheric Seeing

AbstractGround-based optical telescopes, in particular large ones, require adaptive optics to overcome the atmospheric seeing limit due to turbulence. Correcting the distorted wavefront necessitates bright stars in the field of view. The sky coverage can be greatly increased by using artificial sodium laser guide stars in addition to natural guide stars. We describe the underlying physics and technical considerations relevant to such systems before discussing the design of the four-laser guide star facility (4LGSF) which is currently under development for the ESO Very Large Telescope (VLT) on Cerro Paranal, Chile. The focus is upon the justification of the requirements and their technical solution.

scholarly journals Suppression of Rayleigh scattering noise in sodium laser guide stars by hyperfine depolarization of fluorescence

2006 ◽  
Vol 14 (24) ◽  
pp. 11494 ◽  
Author(s):  
Hugues Guillet de Chatellus ◽  
Ioana Moldovan ◽  
Vincent Fesquet ◽  
Jean-Paul Pique
Keyword(s):  
Rayleigh Scattering ◽  
Laser Guide Stars ◽  
Laser Guide ◽  
Sodium Laser ◽  
Scattering Noise

Diode-seeded fiber-based sodium laser guide stars ready for deployment

2010 ◽  
Author(s):  
Wilhelm G. Kaenders ◽  
Axel Friedenauer ◽  
Vladimir Karpov ◽  
Vladimir Protopopov ◽  
Wallace R. L. Clements ◽  
...  
Keyword(s):  
Laser Guide Stars ◽  
Laser Guide ◽  
Sodium Laser

scholarly journals Experimental results of ground-layer and tomographic wavefront reconstruction from multiple laser guide stars

2006 ◽  
Vol 14 (17) ◽  
pp. 7541 ◽  
Author(s):  
Michael Lloyd-Hart ◽  
Christoph Baranec ◽  
N. Mark Milton ◽  
Miguel Snyder ◽  
Thomas Stalcup ◽  
...  
Keyword(s):  
Experimental Results ◽  
Ground Layer ◽  
Wavefront Reconstruction ◽  
Laser Guide Stars ◽  
Laser Guide

Toward optimization of pulsed sodium laser guide stars

2015 ◽  
Vol 32 (12) ◽  
pp. 2425 ◽  
Author(s):  
Rachel Rampy ◽  
Donald Gavel ◽  
Simon M. Rochester ◽  
Ronald Holzlöhner
Keyword(s):  
Laser Guide Stars ◽  
Laser Guide ◽  
Sodium Laser

Adaptive optics experiments using sodium laser guide stars

1995 ◽  
Vol 439 ◽  
pp. 455 ◽  
Author(s):  
M. Lloyd-Hart ◽  
J. R. P. Angel ◽  
B. Jacobsen ◽  
D. Wittman ◽  
R. Dekany ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Laser Guide Stars ◽  
Laser Guide ◽  
Sodium Laser
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