Raman-Ramsey CPT with a grating magneto-optical trap

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Abstract

We describe an experiment which combines cold 87Rb atoms from a grating magneto-optical trap (GMOT) with Lin-perp-Lin coherent population trapping (CPT) and pulsed Ramsey interrogation. The bichromatic fields required for Lin-perp-Lin are generated by combining light from a single external cavity diode laser (ECDL) with an electro-optic modulator (EOM) and an acousto-optic modulator (AOM). With this laser system and the GMOT, we are able to produce Raman-Ramsey fringes using either the F' = 1 or the F' = 2 excited states of the 87 Rb D1 line. As a step towards realising a frequency standard based on the GMOT, we measure the Ramsey fringe amplitude as a function of the magnetic bias field and the excited state. We observe dark state interference with F' = 1 and show that this interference is suppressed with F' = 2, as expected from prior work on CPT with 87Rb in thermal vapour cells.
LanguageEnglish
Title of host publication2018 European Frequency and Time Forum (EFTF)
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages61-64
Number of pages4
ISBN (Electronic)9781538656204
DOIs
Publication statusPublished - 12 Jul 2018
Event2018 European Frequency and Time Forum - National Museum of Automobiles, Turin, Italy
Duration: 10 Apr 201812 Apr 2018
http://www.eftf2018.it/uk/

Conference

Conference2018 European Frequency and Time Forum
Abbreviated titleEFTF 2018
CountryItaly
CityTurin
Period10/04/1812/04/18
Internet address

Fingerprint

Excited states
Modulators
Frequency standards
Electrooptical effects
Semiconductor lasers
Optics
Vapors
Atoms
Lasers
Experiments
Hot Temperature

Keywords

  • quantum technology
  • atomic clock
  • coherent population trapping
  • cold atoms
  • laser cooling

Cite this

@inproceedings{4de66294abb74039a341865dcf906558,
title = "Raman-Ramsey CPT with a grating magneto-optical trap",
abstract = "We describe an experiment which combines cold 87Rb atoms from a grating magneto-optical trap (GMOT) with Lin-perp-Lin coherent population trapping (CPT) and pulsed Ramsey interrogation. The bichromatic fields required for Lin-perp-Lin are generated by combining light from a single external cavity diode laser (ECDL) with an electro-optic modulator (EOM) and an acousto-optic modulator (AOM). With this laser system and the GMOT, we are able to produce Raman-Ramsey fringes using either the F' = 1 or the F' = 2 excited states of the 87 Rb D1 line. As a step towards realising a frequency standard based on the GMOT, we measure the Ramsey fringe amplitude as a function of the magnetic bias field and the excited state. We observe dark state interference with F' = 1 and show that this interference is suppressed with F' = 2, as expected from prior work on CPT with 87Rb in thermal vapour cells.",
keywords = "quantum technology, atomic clock, coherent population trapping, cold atoms, laser cooling",
author = "Rachel Elvin and Hoth, {Gregory W.} and Wright, {Michael W.} and McGilligan, {James P.} and Arnold, {Aidan S.} and Griffin, {Paul F.} and Erling Riis",
note = "{\circledC} 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.",
year = "2018",
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doi = "10.1109/EFTF.2018.8408998",
language = "English",
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Elvin, R, Hoth, GW, Wright, MW, McGilligan, JP, Arnold, AS, Griffin, PF & Riis, E 2018, Raman-Ramsey CPT with a grating magneto-optical trap. in 2018 European Frequency and Time Forum (EFTF). IEEE, Piscataway, NJ, pp. 61-64, 2018 European Frequency and Time Forum , Turin, Italy, 10/04/18. https://doi.org/10.1109/EFTF.2018.8408998

Raman-Ramsey CPT with a grating magneto-optical trap. / Elvin, Rachel; Hoth, Gregory W.; Wright, Michael W.; McGilligan, James P.; Arnold, Aidan S.; Griffin, Paul F.; Riis, Erling.

2018 European Frequency and Time Forum (EFTF). Piscataway, NJ : IEEE, 2018. p. 61-64.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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N1 - © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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N2 - We describe an experiment which combines cold 87Rb atoms from a grating magneto-optical trap (GMOT) with Lin-perp-Lin coherent population trapping (CPT) and pulsed Ramsey interrogation. The bichromatic fields required for Lin-perp-Lin are generated by combining light from a single external cavity diode laser (ECDL) with an electro-optic modulator (EOM) and an acousto-optic modulator (AOM). With this laser system and the GMOT, we are able to produce Raman-Ramsey fringes using either the F' = 1 or the F' = 2 excited states of the 87 Rb D1 line. As a step towards realising a frequency standard based on the GMOT, we measure the Ramsey fringe amplitude as a function of the magnetic bias field and the excited state. We observe dark state interference with F' = 1 and show that this interference is suppressed with F' = 2, as expected from prior work on CPT with 87Rb in thermal vapour cells.

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