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RESEARCH PRODUCT
Studies towards a directional polychromatic sodium laser guide star
Dmitry BudkerS. M. RochesterRonald HolzlöhnerFelipe Pedreros BustosAlexander M. Akulshinsubject
0301 basic medicinePhysicsAmplified spontaneous emissionbusiness.industryPhysics::OpticsFlux01 natural sciences010309 optics03 medical and health sciencesWavelength030104 developmental biologyOpticsLaser guide starOrders of magnitude (time)Net gainExcited state0103 physical sciencesSpontaneous emissionbusinessdescription
In this work we discuss a mechanism for generation of a coherent source of light from the mesosphere as a new concept of directional laser guide star. In contrast to the near-isotropic spontaneous emission, nonlinear processes in atomic vapors like amplified spontaneous emission can yield highly directional emission in the forward and backward directions. Along with directional emission, excited sodium atoms also radiate at different wavelength creating a polychromatic laser guide star (PLGS). If feasible, a directional PLGS would provide a net gain in the return flux of several orders of magnitude compared to traditional LGS schemes, making possible laser-guided tip/tilt-correction in adaptive optic systems.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-07-10 | Adaptive Optics Systems VI |