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Strontium optical lattice clock at the National Time Service Center
- Source :
- Chinese Physics B. 27:023701
- Publication Year :
- 2018
- Publisher :
- IOP Publishing, 2018.
-
Abstract
- We report the 87Sr optical lattice clock developed at the National Time Service Center. We achieved a closed-loop operation of the optical lattice clock based on 87Sr atoms. The linewidth of the spin-polarized clock peak is 3.9 Hz with a clock laser pulse length of 300 ms, which corresponds to a Fourier-limited linewidth of 3 Hz. The fitting of the in-loop error signal data shows that the instability is approximately , affected primarily by the white noise. The fractional frequency difference averages down to for an averaging time of 3000 s.
- Subjects :
- Physics
Optical lattice
business.industry
General Physics and Astronomy
Pulse duration
02 engineering and technology
White noise
021001 nanoscience & nanotechnology
Laser
01 natural sciences
Instability
Electromagnetic radiation
Atomic clock
law.invention
Laser linewidth
Optics
law
0103 physical sciences
010306 general physics
0210 nano-technology
business
Subjects
Details
- ISSN :
- 16741056
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Chinese Physics B
- Accession number :
- edsair.doi...........1b659ff127b8f3ea02304c17a1d7af26