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Authors = A. Kumarakrishnan

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30 pages, 14111 KiB  
Review
Laboratory Courses on Laser Spectroscopy and Atom Trapping
by Hermina C. Beica, Shoshana Winter, Carson Mok, Brynle Barrett, Rob Berthiaume, Andrejs Vorozcovs, Fadi Yachoua, Nima Afkhami-Jeddi, Monika Aggarwal, Gehrig Carlse, Alex Pouliot, Kevin B. Borsos, Thomas Vacheresse, Raanan Marants and A. Kumarakrishnan
Atoms 2020, 8(2), 25; https://doi.org/10.3390/atoms8020025 - 28 May 2020
Cited by 2 | Viewed by 3973
Abstract
We present an overview of experiments covered in two semester-length laboratory courses dedicated to laser spectroscopy and atom trapping. These courses constitute a powerful approach for teaching experimental physics in a manner that is both contemporary and capable of providing the background and [...] Read more.
We present an overview of experiments covered in two semester-length laboratory courses dedicated to laser spectroscopy and atom trapping. These courses constitute a powerful approach for teaching experimental physics in a manner that is both contemporary and capable of providing the background and skills relevant to a variety of research laboratories. The courses are designed to be accessible for all undergraduate streams in physics and applied physics as well as incoming graduate students. In the introductory course, students carry out several experiments in atomic and laser physics. In a follow up course, students trap atoms in a magneto-optical trap and carry out preliminary investigations of the properties of laser cooled atoms based on the expertise acquired in the first course. We discuss details of experiments, impact, possible course formats, budgetary requirements, and challenges related to long-term maintenance. Full article
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42 pages, 3568 KiB  
Article
Prospects for Precise Measurements with Echo Atom Interferometry
by Brynle Barrett, Adam Carew, Hermina C. Beica, Andrejs Vorozcovs, Alexander Pouliot and A. Kumarakrishnan
Atoms 2016, 4(3), 19; https://doi.org/10.3390/atoms4030019 - 27 Jun 2016
Cited by 21 | Viewed by 8245
Abstract
Echo atom interferometers have emerged as interesting alternatives to Raman interferometers for the realization of precise measurements of the gravitational acceleration g and the determination of the atomic fine structure through measurements of the atomic recoil frequency ω q . Here we review [...] Read more.
Echo atom interferometers have emerged as interesting alternatives to Raman interferometers for the realization of precise measurements of the gravitational acceleration g and the determination of the atomic fine structure through measurements of the atomic recoil frequency ω q . Here we review the development of different configurations of echo interferometers that are best suited to achieve these goals. We describe experiments that utilize near-resonant excitation of laser-cooled rubidium atoms by a sequence of standing wave pulses to measure ω q with a statistical uncertainty of 37 parts per billion (ppb) on a time scale of ∼50 ms and g with a statistical precision of 75 ppb. Related coherent transient techniques that have achieved the most statistically precise measurements of atomic g-factor ratios are also outlined. We discuss the reduction of prominent systematic effects in these experiments using off-resonant excitation by low-cost, high-power lasers. Full article
(This article belongs to the Special Issue Atom Interferometry)
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