53 research outputs found
Experimental observation of carrier-envelope phase effects by multicycle pulses
We present an experimental and theoretical study of carrier-envelope phase
(CEP) effects on the population transfer between two bound atomic states
interacting with pulses consisting of many cycles. Using intense
radio-frequency pulse with Rabi frequency of the order of the atomic transition
frequency, we investigated the influence of CEP on the control of phase
dependent multi-photon transitions between the Zeeman sub-levels of the ground
state of Rb. Our scheme has no limitation on the duration of the pulses.
Extending the CEP control to longer pulses creates interesting possibilities to
generate pulses with accuracy that is better then the period of optical
oscillations.Comment: 8 Pages, 6 Figure
From EIT photon correlations to Raman anti-correlations in coherently prepared Rb vapor
We have experimentally observed switching between photon-photon correlations
(bunching) and anti-correlations (anti-bunching) between two orthogonally
polarized laser beams in an EIT configuration in Rb vapor. The bunching and
anti-bunching sswitching occurs at a specific magnetic field strength.Comment: 4 pages and 3 figure
Spectral Narrowing via Quantum Coherence
We have studied the transmission of an optically thick Rb vapor that is
illuminated by monochromatic and noise broaden laser fields in Lambda
configuration. The spectral width of the beat signal between the two fields
after transmission through the atomic medium is more than 1000 times narrower
than the spectral width of this signal before the medium.Comment: 4 pages, 4 figure
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Plasmon coupled super- and sub- radiance from dye shells
Article investigates cooperative spontaneous emission, theoretically and experimentally, for an ensemble of emitters coupled to a core-shell structure
Ultralow-power local laser control of the dimer density in alkali-metal vapors through photodesorption
Ultralow-power diode-laser radiation is employed to induce photodesorption of
cesium from a partially transparent thin-film cesium adsorbate on a solid
surface. Using resonant Raman spectroscopy, we demonstrate that this
photodesorption process enables an accurate local optical control of the
density of dimer molecules in alkali-metal vapors.Comment: 4 pages, 4 figure
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