Concept for polychromatic laser guide stars: one-photon excitation of the 4P3/2 level of a sodium atom.


One challenge for polychromatic laser guide stars is to create a sufficiently intense source in the UV. The flux required for the measurement of differential tip-tilt is the main issue that we address. We describe a model that has been validated using on-sky data. We present a method that excites the 4P3/2 sodium level using a one-photon excitation at 330… (More)

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