Frequency-comb-referenced tunable diode laser spectroscopy and laser stabilization applied to laser cooling

Thomas Fordell (Corresponding Author), Anders E. Wallin, Thomas Lindvall, Markku Vainio, Mikko Merimaa

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Laser cooling of trapped atoms and ions in optical clocks demands stable light sources with precisely known absolute frequencies. Since a frequency comb is a vital part of any optical clock, the comb lines can be used for stabilizing tunable, user-friendly diode lasers. Here, a light source for laser cooling of trapped strontium ions is described. The megahertz-level stability and absolute frequency required are realized by stabilizing a distributed-feedback semiconductor laser to a frequency comb. Simple electronics is used to lock and scan the laser across the comb lines, and comb mode number ambiguities are resolved by using a separate, saturated absorption cell that exhibits easily distinguishable hyperfine absorption lines with known frequencies. Due to the simplicity, speed, and wide tuning range it offers, the employed technique could find wider use in precision spectroscopy.
Original languageEnglish
Pages (from-to)7476-7482
JournalApplied Optics
Volume53
Issue number31
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Laser cooling
laser cooling
Laser spectroscopy
laser spectroscopy
Light sources
Semiconductor lasers
Clocks
Stabilization
stabilization
diodes
Lasers
Ions
Strontium
Laser modes
lasers
Electronic equipment
Tuning
clocks
Spectroscopy
Feedback

Keywords

  • laser stabilization
  • lasers, distributed-feedback
  • laser cooling
  • spectroscopy, diode lasers
  • spectroscopy, saturation

Cite this

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title = "Frequency-comb-referenced tunable diode laser spectroscopy and laser stabilization applied to laser cooling",
abstract = "Laser cooling of trapped atoms and ions in optical clocks demands stable light sources with precisely known absolute frequencies. Since a frequency comb is a vital part of any optical clock, the comb lines can be used for stabilizing tunable, user-friendly diode lasers. Here, a light source for laser cooling of trapped strontium ions is described. The megahertz-level stability and absolute frequency required are realized by stabilizing a distributed-feedback semiconductor laser to a frequency comb. Simple electronics is used to lock and scan the laser across the comb lines, and comb mode number ambiguities are resolved by using a separate, saturated absorption cell that exhibits easily distinguishable hyperfine absorption lines with known frequencies. Due to the simplicity, speed, and wide tuning range it offers, the employed technique could find wider use in precision spectroscopy.",
keywords = "laser stabilization, lasers, distributed-feedback, laser cooling, spectroscopy, diode lasers, spectroscopy, saturation",
author = "Thomas Fordell and Wallin, {Anders E.} and Thomas Lindvall and Markku Vainio and Mikko Merimaa",
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journal = "Applied Optics",
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Frequency-comb-referenced tunable diode laser spectroscopy and laser stabilization applied to laser cooling. / Fordell, Thomas (Corresponding Author); Wallin, Anders E.; Lindvall, Thomas; Vainio, Markku; Merimaa, Mikko.

In: Applied Optics, Vol. 53, No. 31, 2014, p. 7476-7482.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Frequency-comb-referenced tunable diode laser spectroscopy and laser stabilization applied to laser cooling

AU - Fordell, Thomas

AU - Wallin, Anders E.

AU - Lindvall, Thomas

AU - Vainio, Markku

AU - Merimaa, Mikko

N1 - Project code: 104545

PY - 2014

Y1 - 2014

N2 - Laser cooling of trapped atoms and ions in optical clocks demands stable light sources with precisely known absolute frequencies. Since a frequency comb is a vital part of any optical clock, the comb lines can be used for stabilizing tunable, user-friendly diode lasers. Here, a light source for laser cooling of trapped strontium ions is described. The megahertz-level stability and absolute frequency required are realized by stabilizing a distributed-feedback semiconductor laser to a frequency comb. Simple electronics is used to lock and scan the laser across the comb lines, and comb mode number ambiguities are resolved by using a separate, saturated absorption cell that exhibits easily distinguishable hyperfine absorption lines with known frequencies. Due to the simplicity, speed, and wide tuning range it offers, the employed technique could find wider use in precision spectroscopy.

AB - Laser cooling of trapped atoms and ions in optical clocks demands stable light sources with precisely known absolute frequencies. Since a frequency comb is a vital part of any optical clock, the comb lines can be used for stabilizing tunable, user-friendly diode lasers. Here, a light source for laser cooling of trapped strontium ions is described. The megahertz-level stability and absolute frequency required are realized by stabilizing a distributed-feedback semiconductor laser to a frequency comb. Simple electronics is used to lock and scan the laser across the comb lines, and comb mode number ambiguities are resolved by using a separate, saturated absorption cell that exhibits easily distinguishable hyperfine absorption lines with known frequencies. Due to the simplicity, speed, and wide tuning range it offers, the employed technique could find wider use in precision spectroscopy.

KW - laser stabilization

KW - lasers, distributed-feedback

KW - laser cooling

KW - spectroscopy, diode lasers

KW - spectroscopy, saturation

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