A lineshape study of resonant multiphoton ionisation process: effect of laser bandwidth on the power broadening

Year: 1995

Authors: Cavalieri S., Eramo R.

Autors Affiliation: Dipartimento di Fisica, Università di Firenze, Largo E. Fermi 2, I-50125 Firenze, Italy; European Laboratory for Non-linear Spectroscopy (LENS), Università di Firenze, Largo E. Fermi 2, I-50125 Firenze, Italy

Abstract: The spectral broadening of the two-photon resonant, three-photon ionisation is investigated in sodium. A simple model, involving Bloch-type equations, is found to compare favourably with the experimental results. The effect of power broadening combines with both the finite laser bandwidth and the lifetime broadening, making the selectivity of the ionisation process critically dependent on the laser monochromaticity.

Journal/Review: OPTICS COMMUNICATIONS (PRINT)

Volume: 118 (3/4)      Pages from: 245  to: 249

KeyWords: Phase-diffusing field; Isotopic abundances; Band radiation; Fluctuations; Absorption; Imtensity; Equations of motion; Ionization; Lasers; Mathematical models; Resonance; Sodium, Bloch type equations; Finite laser bandwidth; Laser fields; Laser monochromaticity; Power broadening; Resonant multiphoton ionisation, Photons
DOI: 10.1016/0030-4018(95)00232-W

Citations: 5
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