scholarly journals Continuous multi-step pumping of the optical clock transition in alkaline-earth atoms with minimal perturbation

2022 ◽  
Author(s):  
Christoph Hotter ◽  
David Plankensteiner ◽  
G.A. Kazakov ◽  
Helmut Ritsch
Keyword(s):  
Alkaline Earth ◽  
Optical Clock ◽  
Clock Transition

scholarly journals Absolute frequency measurement of the optical clock transition in with an uncertainty of using a frequency link to international atomic time

2017 ◽  
Vol 65 (5-6) ◽  
pp. 585-591 ◽  
Author(s):  
Charles F. A. Baynham ◽  
Rachel M. Godun ◽  
Jonathan M. Jones ◽  
Steven A. King ◽  
Peter B. R. Nisbet-Jones ◽  
...  
Keyword(s):  
Frequency Measurement ◽  
Optical Clock ◽  
Absolute Frequency ◽  
Clock Transition ◽  
Atomic Time

Magic wavelengths of the optical clock transition at 877 nm of barium

2014 ◽  
Vol 28 (23) ◽  
pp. 1450183 ◽  
Author(s):  
Geng-Hua Yu ◽  
Qi-Ming Xu ◽  
Chao Zhou ◽  
Liang Liang ◽  
Long Li ◽  
...  
Keyword(s):  
Theoretical Calculation ◽  
Optical Lattice ◽  
Optical Lattices ◽  
Optical Clock ◽  
Light Shift ◽  
Laser Trapping ◽  
Clock Transition ◽  
Linearly Polarized

Magic wavelengths for laser trapping of barium atoms in the optical lattices are investigated while considering the optical clock transition at 877 nm between the 6s21S0 state and 6s5d 1D2 state. Theoretical calculation shows that there are several magic wavelengths with the linearly polarized trapping laser. The trap depths of the optical lattice and the slope of light shift difference with different magic wavelengths are also discussed and analyzed. Some of these magic wavelengths are selected and recommended for the optical lattice trapping laser.

Observation of the 1S0–3P0 optical clock transition in cold 199Hg atoms

2018 ◽  
Vol 16 (6) ◽  
pp. 060202 ◽  
Author(s):  
Xiaohu Fu Xiaohu Fu ◽  
Su Fang Su Fang ◽  
Ruchen Zhao Ruchen Zhao ◽  
Ye Zhang Ye Zhang ◽  
Junchao Huang Junchao Huang ◽  
...  
Keyword(s):  
Optical Clock ◽  
Clock Transition

scholarly journals Superradiance on the millihertz linewidth strontium clock transition

2016 ◽  
Vol 2 (10) ◽  
pp. e1601231 ◽  
Author(s):  
Matthew A. Norcia ◽  
Matthew N. Winchester ◽  
Julia R. K. Cline ◽  
James K. Thompson
Keyword(s):  
Cavity Mode ◽  
Optical Cavity ◽  
Atomic Clock ◽  
Laser Frequency ◽  
Gain Medium ◽  
Optical Clock ◽  
Frequency Noise ◽  
Clock Transition ◽  
Reference Cavity ◽  
High Finesse

Laser frequency noise contributes a significant limitation to today’s best atomic clocks. A proposed solution to this problem is to create a superradiant laser using an optical clock transition as its gain medium. This laser would act as an active atomic clock and would be highly immune to the fluctuations in reference cavity length that limit today’s best lasers. We demonstrate and characterize superradiant emission from the millihertz linewidth clock transition in an ensemble of laser-cooled 87Sr atoms trapped within a high-finesse optical cavity. We measure a collective enhancement of the emission rate into the cavity mode by a factor of more than 10,000 compared to independently radiating atoms. We also demonstrate a method for seeding superradiant emission and observe interference between two independent transitions lasing simultaneously. We use this interference to characterize the relative spectral properties of the two lasing subensembles.

Precision spectroscopy of the optical clock transition in laser cooled neutral Hg.

2014 ◽  
Author(s):  
Christian Lytle ◽  
Justin Paul ◽  
Tsung-Han Wu ◽  
R. Jason Jones
Keyword(s):  
Optical Clock ◽  
Precision Spectroscopy ◽  
Clock Transition
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