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Ultralow-power local laser control of the dimer density in alkali-metal vapors through photodesorption
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10.1063/1.4747537
/content/aip/journal/apl/101/9/10.1063/1.4747537
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/9/10.1063/1.4747537

Figures

Image of FIG. 1.
FIG. 1.

Experimental setup. The upper inset shows a simple three-level model for Raman scattering. Here, the lower two levels p and s and upper level a are the vibrational states the ground state and the excited state of cesium dimer, respectively. The lower inset shows the zoomed part near the window. A thin film of metallic cesium is condensed on one side of the cell inside the oven. The Raman signal generated in the backward direction is collected and analyzed using the spectrometer. VDF is variable density filter; L is lens and BS is beam splitter.

Image of FIG. 2.
FIG. 2.

Raman spectra in the backward direction (arb. units) (a) experimental and (b) numerical simulation.

Image of FIG. 3.
FIG. 3.

Resonance enhancement of the Raman peak at 796.16 nm as a function of the one-photon detuning. Full width at half maximum value () is consistent with the Doppler broadening from the vapor phase. Insert shows the energy levels of Cesium dimer relevant to our experiment.

Image of FIG. 4.
FIG. 4.

Plot of the backscattered intensity (arb. units) of the Raman peak at 796.16 nm vs the pump power for three different choices of the cell temperature in the presence of the film. Dots illustrate the experimental data and solid lines are fitting using Eq. (3). The inset shows the transmission of pump laser through the metal film.

Tables

Generic image for table
Table I.

Numerical values of the fitting parameter , the number density of the cesium dimers at maximum pump power , and the effective cell temperature .

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/content/aip/journal/apl/101/9/10.1063/1.4747537
2012-08-28
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultralow-power local laser control of the dimer density in alkali-metal vapors through photodesorption
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/9/10.1063/1.4747537
10.1063/1.4747537
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