Ultrastable laser system for spectroscopy of the {sup 1}S{sub 0}–{sup 3}P{sub 0} clock transition in Sr atoms
A laser system with a spectral linewidth less than 1 Hz for spectroscopy of the {sup 1}S{sub 0}–{sup 3}P{sub 0} clock transition in strontium atoms has been demonstrated. A semiconductor laser emitting at a wavelength of 698 nm was stabilised to an external high-finesse Fabry–Perot cavity with vibration and temperature compensation near the zero expansion point. After laser cooling to a temperature below 3 μK, {sup 88}Sr atoms were loaded into an optical lattice at a magic wavelength of 813 nm. The laser system was used to characterise the {sup 88}Sr clock transition by magnetically induced spectroscopy. The resonance spectral width was determined to be 130 ± 17 Hz, which corresponds to a quality factor of 3 × 10{sup 12}. (paper)
- OSTI ID:
- 22726008
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 47, Issue 5; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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