30a-T-9 High resolution spectroscopy of Rb using coherent population trapping

Timothy T. Grove, V. Sánchez-Villicaña, B C Duncan +2 more

Koji Motomura, Masaharu Mitsunaga

High-resolution spectroscopy of hyperfine Zeeman components in a sodium atomic vapor has been performed by a coherent population trapping (CPT) technique. The measurement features the simple configuration of a single laser source with a frequency-swept double-pass acousto-optic modulator. Well-resolved CPT dip signals in the presence of longitudinal or transverse static magnetic fields can be nicely explained by a theory based on two-photon resonance.

Xianghui Qi, Wenlong Chen, Lin Yi +2 more

A new source of two diode laser beams, spatially separated but optically phase-locked with each other, is used to study the modulation transfer spectroscopy of coherent population trapping resonance (CPT). The spectrum for the (87)Rb D2 line is obtained with narrow linewidth and high signal-to-noise ratio, and analyzed with different experimental parameters. A theoretical analysis of the CPT modulation transfer spectra is deduced from the density matrix equation of motion, and found to be in good agreement with the experimental results.

Hideaki Sakai, K. Miyazaki

Koji Motomura, M. Fuchigami, Masaharu Mitsunaga

Coherent population trapping signals were observed in Na vapor in a simple configuration of a single laser source with a frequency-swept double-pass acousto-optic modulator. This technique enabled high-resolution hyperfine Zeeman spectroscopy of Na atoms.

E. Arimondo