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AIP conference proceedings

Time behavior of the 7[sup 3]S[sub 1]−6[sup 3]P[sub 2] transition following pulsed laser excitation of the 6[sup 3]P[sub 1] state of mercury

Kiril B. Blagoev, Dieter Gruber, Alexander A. Dreischuh, A. Morozov, Ursula Reiter-Domiaty, Laurentius Windholz

Published Jan 1, 1997• 0 citations
Publisher
DOI
10.1063/1.51778

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Resonance ionization of rubidium using sequential diode laser-driven transitions

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Diode laser excitation of rubidium atoms at the D2 line followed by (1 + 1) ionization using a pulsed dye laser was examined. Mass-resolved D2 spectra were recorded for both natural isotopes. Excitation using two sequential diode laser photons was accomplished by counterpropagating the beam from the 780 nm laser and one from a 775.8 laser; the latter excites Rb from the {sup 5}P{sub 3/2} level to the {sup 5}D{sub 5/2} level at 25704 cm{sup {minus}1}. A photon from the R6G laser then ionized the atom. Spectra resulting from scanning the second diode laser -- with the first an an off-resonance fixed frequency revealed both two-photon and sequential (1 + 1) processes.

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Near-recoil-limited temperatures obtained by laser trapping on the narrow /sup 1/S/sub 0/-/sup 3/P/sub 1/ intercombination transition of neutral strontium

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About 2/spl times/10/sup 7/ neutral strontium atoms have been loaded into a magneto-optical trap (MOT) that uses the narrow (/spl Gamma/=2/spl pi/ 7 kHz) intercombination line at 689 nm as the cycling transition. The atoms are second-stage laser cooled to /spl sim/10 /spl mu/K from an initial 5 mK atomic sample (/spl sim/5/spl times/10/sup 7/ atoms), generated in a vapor cell MOT that employs the strong (/spl Gamma/=2/spl pi/ 32 MHz) cycling transition at 461 nm. To demonstrate the low temperatures of these atoms, optical Ramsey spectroscopy is performed upon the /sup 1/S/sub 0/-/sup 3/P/sub 1/ transition using only two excitation pulses; the time dependence of the fringe contrast indicates an RMS velocity of 3 cm/s for the 689 nm MOT-cooled sample.

Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)•Jan 22, 2003•1 citation

EFFECT OF LASER INTENSITY VARIATION AND COHERENCE ON THE RESONANT EXCITATION OF THE 6P-1(1)-6D-1(2) TRANSITION OF ATOMIC MERCURY

Andrew James Murray, MURRAY, AJ, W. R. MacGillivray +1 more

•May 1, 1991•0 citations
Diode laser excitation of rubidium atoms at the D2 line followed by (1 + 1) ionization using a pulsed dye laser was examined. Mass-resolved D2 spectra were recorded for both natural isotopes. Excitation using two sequential diode laser photons was accomplished by counterpropagating the beam from the 780 nm laser and one from a 775.8 laser; the latter excites Rb from the {sup 5}P{sub 3/2} level to the {sup 5}D{sub 5/2} level at 25704 cm{sup {minus}1}. A photon from the R6G laser then ionized the atom. Spectra resulting from scanning the second diode laser -- with the first an an off-resonance fixed frequency revealed both two-photon and sequential (1 + 1) processes.
About 2/spl times/10/sup 7/ neutral strontium atoms have been loaded into a magneto-optical trap (MOT) that uses the narrow (/spl Gamma/=2/spl pi/ 7 kHz) intercombination line at 689 nm as the cycling transition. The atoms are second-stage laser cooled to /spl sim/10 /spl mu/K from an initial 5 mK atomic sample (/spl sim/5/spl times/10/sup 7/ atoms), generated in a vapor cell MOT that employs the strong (/spl Gamma/=2/spl pi/ 32 MHz) cycling transition at 461 nm. To demonstrate the low temperatures of these atoms, optical Ramsey spectroscopy is performed upon the /sup 1/S/sub 0/-/sup 3/P/sub 1/ transition using only two excitation pulses; the time dependence of the fringe contrast indicates an RMS velocity of 3 cm/s for the 689 nm MOT-cooled sample.