Laser system for Doppler cooling of ytterbium ion in an optical frequency standard

A laser system for Doppler cooling of ytterbium ion on the transition in a single-ion optical frequency standard is developed. The second harmonic of a semiconductor laser with a wavelength of is used for cooling. The laser frequency is doubled in a nonlinear BiBO crystal embedded in a ring resonato...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2014-01, Vol.44 (6), p.527-529
Main Authors: Chepurov, S.V., Lugovoy, A.A., Kuznetsov, S.N.
Format: Article
Language:English
Subjects:
BISMUTH COMPOUNDS
BORON OXIDES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COOLING
Cooling systems
CRYSTALS
diode laser
Doppler effect
EFFICIENCY
frequency doubling
frequency stabilisation
GHZ RANGE 01-100
LASER RADIATION
Lasers
NONLINEAR PROBLEMS
Optical frequency
RESONATORS
SEMICONDUCTOR LASERS
Sidebands
Ytterbium
YTTERBIUM IONS
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Summary:A laser system for Doppler cooling of ytterbium ion on the transition in a single-ion optical frequency standard is developed. The second harmonic of a semiconductor laser with a wavelength of is used for cooling. The laser frequency is doubled in a nonlinear BiBO crystal embedded in a ring resonator, which also serves as a reference for laser frequency stabilisation. Second-harmonic power of is generated at a wavelength of . Diode laser radiation is modulated by an electro-optic modulator at to generate a sideband exciting the hyperfine component of the cooling transition that is not excited by resonant cooling light. The sideband relative intensity of a few percent proved to be sufficient to reduce the ion dwelling time in the state to less than and increase the cooling efficiency.
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2014v044n06ABEH015450