• A short description of the VASAO concept can be found here (pdf).
  

Litterature

• New! The provisional error budget of VASAO (still much to do) is available here (pdf) and an overview of the challenges is here (PDF). Both documents are work in progress, and omments, critics, ... are more than welcome. Send them over the forum or at vasao_cfhtcfht.hawaii.edu.
  

• New! The paper, controversial judging by the discussions within ELP-OA,  by J.P. Pique et al on "Concept for polychromatic laser guide stars one-photon excitation of the 4P3/2 level" is here (pdf).
  

• The SPIE 2006 paper on VASAO by Veillet et al. is here (pdf).

• The 2002 paper by Schock et al: "Performance analysis of polychromatic laser guide stars used for wavefront tilt sensing" is here (pdf).

• The 1995 paper by Foy et al: "The polychromatic artificial sodium star: A new concept for correcting the atmospheric tilt" is here (pdf).

• The original modeless laser developed in Grenoble is described in an article by Pique et al: " An efficient modeless laser for a mesospheric sodium laserguide star" published in JOSAB and available here (pdf).