Preprint Article Version 1 This version is not peer-reviewed

Optical Pumping of TeH+: Implications for Search for Varying mp/me

Version 1 : Received: 11 July 2018 / Approved: 12 July 2018 / Online: 12 July 2018 (08:04:03 CEST)

How to cite: Stollenwerk, P.R.; Kokish, M.G.; Oliveira-Filho, A.G.S.D.; Ornellas, F.R.; Odom, B.C. Optical Pumping of TeH+: Implications for Search for Varying mp/me. Preprints 2018, 2018070212 (doi: 10.20944/preprints201807.0212.v1). Stollenwerk, P.R.; Kokish, M.G.; Oliveira-Filho, A.G.S.D.; Ornellas, F.R.; Odom, B.C. Optical Pumping of TeH+: Implications for Search for Varying mp/me. Preprints 2018, 2018070212 (doi: 10.20944/preprints201807.0212.v1).

Abstract

Molecular overtone transitions provide optical frequency transitions sensitive to variation in the proton-to-electron mass ratio (μ = mp/me). However, robust molecular state preparation presents a challenge critical for achieving high precision. Here, we characterize infrared and optical-frequency broadband laser cooling schemes for TeH+, a species with multiple electronic transitions amenable to sustained laser control. Using rate equations to simulate laser cooling population dynamics, we estimate the fractional sensitivity to μ attainable using TeH+. We find that laser cooling of TeH+ can lead to significant improvements on current μ variation limits.

Subject Areas

time variation of constants; proton-electron mass ratio; molecular ion; laser cooling

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