Bibliographic Details
| Title: |
Multiple beam atom interferometer: theory and experiment. |
| Authors: |
Weitz, M., Heupel, T., Hänsch, T.W. |
| Source: |
Applied Physics B: Lasers & Optics. 1997, Vol. 65 Issue 6, p713. 12p. 7 Color Photographs. |
| Subjects: |
Interferometers, Ultrashort laser pulses, Neutral beams |
| Abstract: |
We first give a detailed account of the theory of atom interferometers based on a sequence of laser pulses projecting the atomic wave packets onto a spatially separating dark superposition state. We then describe the experimental realization of a multiple beam atom interferometer based on this method. In our experiment, we observe an interference signal that shows the sharply peaked Airy-function like pattern characteristic for multiple beam interference. Besides this fringe sharpening effect, we observe a further significant difference compared to the signal of a conventional two-beam atom interferometer. When the time between the beamsplitting pulses is varied, we observe collapse and revival of the fringe pattern, which is caused by a recoil phase shift increasing quadratically with the transverse atomic momentum. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
