Naslov
Velocity-selective double resonance in Doppler-broadened rubidium vapor

Autori
Vujičić, Nataša ; Ban, Ticijana ; Kregar, Gordana ; Aumiler, Damir ; Pichler, Goran

Izvornik
Physical Review A - Atomic, Molecular, and Optical Physics (1050-2947) 87 (2013); 013438-1

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

Ključne riječi
two-photon excitation; frequency comb; rubidium; velocity-selective double resonance

Sažetak
We study resonantly enhanced cascaded two-photon transitions in Doppler-broadened rubidium vapor, induced by an optical frequency comb. Cascaded two-step excitation of atoms from the ground state 5S1/2 to the final 5D5/2 state via an intermediate 5P3/2 state as well as the influence of the frequency comb repetition rate on the two-photon fluorescence signal have been investigated. It is shown that the careful choice of fR leads to enhancement of the two-photon signal with considerable increase of the final 5D5/2-state population due to velocity-selective double resonance. Since the double-resonance condition for two different rubidium isotopes is fulfilled for different fR, the possibility of isotope-selective two-photon excitation is explored. The dependence of the two-photon signal on external magnetic field values and different repetition rates of the optical frequency comb is also investigated.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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