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Low phase noise Raman beams for atomic interferometry

August 18, 2017 - 10:00am
Eduardo Gómez
Instituto de Física, Universidad Autónoma de San Luis Potosí

Atomic gravimetry requires two phase locked lasers with the correct polarization. It is possible to generate the two beams using a fiber phase modulator. There is a destructive interference that appears with this method from the two Raman pairs produced. We show that a long calcite crystal can be used to turn this into constructive interference. In this scheme it is possible to excite both counter and co propagating Raman transitions. I will also show a way to combine two different hyperfine transitions to reduce the magnetic sensitivity in atomic gravimetry.

PSC 2136