Year: 2008
Type: article
Abstract: We report on the setup and characterization of a 698-nm master–slave diode laser system to probe the$^{1}\hbox{S}_{0} {-}^{3} \hbox{P}_{0}$clock transition of strontium atoms confined in a 1-D optical lattice. A linewidth on the order of about 100 Hz of the laser system has been measured with respect to an ultrastable 657-nm diode laser with 1-Hz linewidth using a femtosecond fiber comb as a transfer oscillator. The laser has been used to measure the magnetically induced$^{1}\hbox{S}_{0} {-}^{3} \hbox{P}_{0}$clock transition in$^{88}\hbox{Sr}$, where a linewidth of 165 Hz has been observed. The transfer oscillator method provides a virtual beat signal between the two diode lasers that has been used to phase lock the 698-nm laser to the 1-Hz-linewidth laser at 657 nm, transferring its stability to the 698-nm laser system.
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2155147465