Naslov
Femtosecond laser pulse train effect on Doppler profile of cesium resonance lines

Autori
Vujičić, Nataša ; Vdović, Silvije ; Aumiler, Damir ; Ban, Ticijana ; Skenderović, Hrvoje ; Pichler, Goran

Izvornik
European physical journal D : atomic, molecular and optical physics (1434-6060) 41 (2007), 3; 447-454

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
frequency comb; femtosecond laser; femtosecond pulse; cesium lines; cesium

Sažetak
We present direct observation of the velocity-selective optical pumping of the Cs ground state hyperfine levels induced by the fem¬ ; ; ; tosecond (fs) laser oscillator centered at either D2 (6 2S1/2→ 6 2P3/2, 852 nm) or D1 (6 2S1/2→ 6 2P1/2, 894 nm) cesium line. We utilized previously developed modifi ed direct frequency comb spectroscopy (DFCS) which uses a fi xed frequency comb for the excitation and a weak cw scanning probe laser centered at the 133Cs 6 2S1/2→ 6 2P3/2 transition (D2 line) for ground levels population monitoring. The frequency comb excitation changes the usual Doppler absorption profi le into a specific periodic, comblike structure. The mechanism of the velocity selective population transfer between the Cs ground state hyperfi ne levels induced by fs pulse train excitation is verified in a theoretical treatment of the multilevel atomic system subjected to a pulse train resonant field interaction.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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