Abstract
Future transportable optical clocks require compact and reliable light sources. Here, broadband, unpolarized repumper and state clearout sources for Sr+ single-ion optical clocks are reported. These turn-key devices require no frequency stabilization or external modulators. They are fiber based, inexpensive, and compact. Key characteristics for clock operation are presented, including optical spectra, induced light shifts, and required extinction ratios. Tests with an operating single-ion standard show a clearout efficiency of 100%. Compared to a laser-based repumper, the achievable fluorescence rates for ion detection are a few tens of percent lower. The resulting ion kinetic temperature is 1-1.5 mK, near the Doppler limit of the ion system. Similar repumper light sources could be made for Ca+ (866 nm) and Ba+ (650 nm) using semiconductor gain media.
| Original language | English |
|---|---|
| Pages (from-to) | 1822-1825 |
| Journal | Optics Letters |
| Volume | 40 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 1 Jan 2015 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- spectroscopy, trapped ion
- metrology
- fiber optics
- fiber devices and optical amplifiers
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Broadband, unpolarized repumping and clearout light sources for Sr+ single-ion clocks. / Fordell, Thomas; Lindvall, Thomas; Dubé, P.; Madej, A. A.; Wallin, Anders E.; Merimaa, Mikko.
In: Optics Letters, Vol. 40, No. 8, 01.01.2015, p. 1822-1825.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Broadband, unpolarized repumping and clearout light sources for Sr+ single-ion clocks
AU - Fordell, Thomas
AU - Lindvall, Thomas
AU - Dubé, P.
AU - Madej, A. A.
AU - Wallin, Anders E.
AU - Merimaa, Mikko
N1 - Project code: 104545
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Future transportable optical clocks require compact and reliable light sources. Here, broadband, unpolarized repumper and state clearout sources for Sr+ single-ion optical clocks are reported. These turn-key devices require no frequency stabilization or external modulators. They are fiber based, inexpensive, and compact. Key characteristics for clock operation are presented, including optical spectra, induced light shifts, and required extinction ratios. Tests with an operating single-ion standard show a clearout efficiency of 100%. Compared to a laser-based repumper, the achievable fluorescence rates for ion detection are a few tens of percent lower. The resulting ion kinetic temperature is 1-1.5 mK, near the Doppler limit of the ion system. Similar repumper light sources could be made for Ca+ (866 nm) and Ba+ (650 nm) using semiconductor gain media.
AB - Future transportable optical clocks require compact and reliable light sources. Here, broadband, unpolarized repumper and state clearout sources for Sr+ single-ion optical clocks are reported. These turn-key devices require no frequency stabilization or external modulators. They are fiber based, inexpensive, and compact. Key characteristics for clock operation are presented, including optical spectra, induced light shifts, and required extinction ratios. Tests with an operating single-ion standard show a clearout efficiency of 100%. Compared to a laser-based repumper, the achievable fluorescence rates for ion detection are a few tens of percent lower. The resulting ion kinetic temperature is 1-1.5 mK, near the Doppler limit of the ion system. Similar repumper light sources could be made for Ca+ (866 nm) and Ba+ (650 nm) using semiconductor gain media.
KW - spectroscopy, trapped ion
KW - metrology
KW - fiber optics
KW - fiber devices and optical amplifiers
U2 - 10.1364/OL.40.001822
DO - 10.1364/OL.40.001822
M3 - Article
VL - 40
SP - 1822
EP - 1825
JO - Optics Letters
JF - Optics Letters
SN - 0146-9592
IS - 8
ER -