Impact of laser frequency noise in coherent population trapping with cold atoms

Gregory W. Hoth, Rachel Elvin, Michael W. Wright, Ben Lewis, Aidan S. Arnold, Paul F. Griffin, Erling Riis, Florian Gruet, Christoph Affolderbach, Gaetano Mileti

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

2 Citations (Scopus)
6 Downloads (Pure)

Abstract

Laser-cooled atoms and coherent population trapping (CPT) are promising tools for realizing a compact microwave frequency reference with excellent stability. To realize a high performance device, it is necessary to understand and minimize all sources of technical noise. Here, we investigate the role of laser frequency noise in cold-atom CPT with an apparatus based on the grating magneto-optical trap (GMOT). We compare the performance of our setup with an external cavity diode laser (ECDL) and a distributed feedback diode laser (DFB). With the DFB, laser frequency noise is one of the dominant noise sources in our system. With the ECDL, it is significantly reduced. We also report frequency stability measurements of our apparatus with a short-term Allan deviation Sigma_y (tau) ≈ 3(times)10-11/rt τ up to τ= 10 s.
Original languageEnglish
Title of host publication2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum (EFTF/IFC)
Place of PublicationPiscataway, N.J.
PublisherIEEE
Number of pages6
ISBN (Electronic)978-1-5386-8305-7
DOIs
Publication statusPublished - 3 Oct 2019
Event2019 Joint Meeting of the International Frequency Control Symposium and the European Time and Frequency Forum - Florida, Orlando, United States
Duration: 15 Apr 201918 Apr 2019
https://ifcs-eftf2019.org/

Conference

Conference2019 Joint Meeting of the International Frequency Control Symposium and the European Time and Frequency Forum
Abbreviated titleIFCS/EFTF 2019
Country/TerritoryUnited States
CityOrlando
Period15/04/1918/04/19
Internet address

Keywords

  • coherent population trapping
  • laser cooling
  • cold atomclock
  • microwave freqency standard

Fingerprint

Dive into the research topics of 'Impact of laser frequency noise in coherent population trapping with cold atoms'. Together they form a unique fingerprint.

Cite this