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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 2001),
  • paper QThH5

Spectroscopy and Ionization Dynamics of a Dense, Ultracold Rydberg Atom Gas

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We describe measurements of high-resolution spectra and ionization dynamics in a strongly interacting gas of cold Rydberg atoms. Ground- state 85Rb atoms are cooled to a few hundred µK in a magneto-optical trap (MOT), and then excited to high Rydberg states by use of a pulse-amplified laser operating near 300 nm. The Rydberg atom density can be higher than 1010 cm−3, depending on the laser power. The laser system produces nearly transform-limited pulses of 8 nsec duration, allowing spectral resolution of about 80 MHz.

© 2001 Optical Society of America

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