We present an experimental study of non-linear selective reflection at a dielectric/Cs vapour interface, in a three-level cascade-up scheme. The non-linear reflection at the D 2 resonance line is monitored in the presence of a resonant irradiation at 621 nm or 658 nm (6 P 3/2 → 8 D 5/2 , 9 S 1/2 ). A novel type of two-photon-induced reflection resonances specifically connected with atoms desorbing from the surface is observed. We demonstrate that these resonances allow one to monitor the atomic-velocity distribution at vapour-solid interfaces.We present an experimental study of non-linear selective reflection at a dielectric/Cs vapour interface, in a three-level cascade-up scheme. The non-linear reflection at the D 2 resonance line is monitored in the presence of a resonant irradiation at 621 nm or 658 nm (6 P 3/2 → 8 D 5/2 , 9 S 1/2 ). A novel type of two-photon-induced reflection resonances specifically connected with atoms desorbing from the surface is observed. We demonstrate that these resonances allow one to monitor the atomic-velocity distribution at vapour-solid interfaces.

Europhysics Letters (EPL)Mar 10, 199424 citations

Selective reflection spectroscopy of a resonant vapor at the interface with a metallic layer

Martine Chevrollier, Marcos Oriá, Janete Gouveia de Souza +3 more

We discuss the properties of selective reflection spectroscopy at the interface between a resonant vapor and a complex dense medium, such as a metallic film layered on a dielectric substrate. We show that in the approximation of a low-density vapor, the signal mixes up the absorptive and dispersive components of the "effective resonant susceptibility" of the vapor, with the mixture amount governed by simple laws of linear optics. Preliminary experiments performed at the interface between Cs vapor (D2, 852-nm line) and a silver-coated glass window are reported, that show qualitatively the effect of the atom-surface van der Waals interaction.We discuss the properties of selective reflection spectroscopy at the interface between a resonant vapor and a complex dense medium, such as a metallic film layered on a dielectric substrate. We show that in the approximation of a low-density vapor, the signal mixes up the absorptive and dispersive components of the "effective resonant susceptibility" of the vapor, with the mixture amount governed by simple laws of linear optics. Preliminary experiments performed at the interface between Cs vapor (D2, 852-nm line) and a silver-coated glass window are reported, that show qualitatively the effect of the atom-surface van der Waals interaction.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topicsMar 27, 200121 citations

DOPPLER-FREE SPECTROSCOPY BY LINEAR SELECTIVE REFLECTION AT GLASS/Cs-VAPOR INTERFACE

Marcos Oriá, Daniel Bloch, M. Ducloy

Laser SpectroscopyJan 1, 19891 citation

Three-level nonlinear selective reflection at a glass–Cs-vapor interface

Anne Amy‐Klein, Solomon M. Saltiel, O. A. Rabi +1 more

We present an experimental study of nonlinear selective reflection at a dielectric--Cs-vapor interface, in a three-level cascade-up scheme. The nonlinear reflection at the Cs ${\mathit{D}}_{2}$ resonance line is monitored in the presence of resonant irradiation at 621 nm or 658 nm (6 ${\mathit{P}}_{3/2}$ \ensuremath{\rightarrow}8 ${\mathit{D}}_{5/2}$ ,9 ${\mathit{S}}_{1/2}$ ). Experimental reflection spectra with either counterpropagating or copropagating light beams are analyzed and compared with the theoretical predictions of F. Schuller et al. [Phys. Rev. A 47, 519 (1993)]. For a blue-detuned pump and copropagating geometry an alternative type of three-level coherent reflection resonances, specifically associated with desorbing atoms, is observed. Also observed is the nonlinear reflection associated with the off-resonant, two-photon dispersion of atoms moving parallel to the window surface. Probe beam saturation is responsible for the appearance of additional resonant features in reflection spectra. Finally we analyze crossover spectral resonances which arise from nondegenerate, four-wave-mixing processes induced by the combined influence of counterpropagating pump and probe beams, and the pump beam being partially reflected by the window.We present an experimental study of nonlinear selective reflection at a dielectric--Cs-vapor interface, in a three-level cascade-up scheme. The nonlinear reflection at the Cs ${\mathit{D}}_{2}$ resonance line is monitored in the presence of resonant irradiation at 621 nm or 658 nm (6${\mathit{P}}_{3/2}$\ensuremath{\rightarrow}8${\mathit{D}}_{5/2}$,9${\mathit{S}}_{1/2}$). Experimental reflection spectra with either counterpropagating or copropagating light beams are analyzed and compared with the theoretical predictions of F. Schuller et al. [Phys. Rev. A 47, 519 (1993)]. For a blue-detuned pump and copropagating geometry an alternative type of three-level coherent reflection resonances, specifically associated with desorbing atoms, is observed. Also observed is the nonlinear reflection associated with the off-resonant, two-photon dispersion of atoms moving parallel to the window surface. Probe beam saturation is responsible for the appearance of additional resonant features in reflection spectra. Finally we analyze crossover spectral resonances which arise from nondegenerate, four-wave-mixing processes induced by the combined influence of counterpropagating pump and probe beams, and the pump beam being partially reflected by the window.

Physical Review AOct 1, 199513 citations

We present an experimental study of nonlinear selective reflection at a dielectric--Cs-vapor interface, in a three-level cascade-up scheme. The nonlinear reflection at the Cs

{\mathit{D}}_{2}

resonance line is monitored in the presence of resonant irradiation at 621 nm or 658 nm (6

{\mathit{P}}_{3/2}

\ensuremath{\rightarrow}8

{\mathit{D}}_{5/2}

{\mathit{S}}_{1/2}

). Experimental reflection spectra with either counterpropagating or copropagating light beams are analyzed and compared with the theoretical predictions of F. Schuller et al. [Phys. Rev. A 47, 519 (1993)]. For a blue-detuned pump and copropagating geometry an alternative type of three-level coherent reflection resonances, specifically associated with desorbing atoms, is observed. Also observed is the nonlinear reflection associated with the off-resonant, two-photon dispersion of atoms moving parallel to the window surface. Probe beam saturation is responsible for the appearance of additional resonant features in reflection spectra. Finally we analyze crossover spectral resonances which arise from nondegenerate, four-wave-mixing processes induced by the combined influence of counterpropagating pump and probe beams, and the pump beam being partially reflected by the window.