Title :
High-resolution spectroscopy and frequency measurement of the midinfrared 5d2D3/2-5d 2D5/2 transition of a single laser-cooled barium ion
Author :
Madej, Alan A. ; Siemsen, Klaus J. ; Sankey, John D. ; Clark, Richard F. ; Vanier, Jacques
Author_Institution :
Inst. for Nat. Meas. Stand., Ottawa, Ont., Canada
fDate :
4/1/1993 12:00:00 AM
Abstract :
The narrow 12.5-μm, 5d2D3/2 -5d2D5/2 fine-structure transition in a laser-cooled, single Ba+ atom was probed with a tunable sideband from a frequency-stable 15NH3 laser operating on the sP(8, 6) transition. Single-ion Doppler-free resonances with negligible time dilation shift are observed without any detected motional sidebands for each Zeeman component. Linewidths of 11 kHz are observed for the components, which are currently limited by the probe laser frequency excursions. A measurement of the D-D transition center frequency relative to the sP(8, 6) saturated absorption is performed. A preliminary measurement of the sP(8, 6) line center frequency gives the line center for the 138Ba+ isotope transition as 24012.048.5±0.2 MHz
Keywords :
Doppler effect; Zeeman effect; atomic fine structure; atomic resonant states; atomic spectral line breadth; barium; infrared spectra of atoms; positive ions; radiation pressure (atoms); radiative shifts; 12.5 micron; 138Ba+ isotope; 15NH3 laser; D-D transition center frequency; Doppler-free resonances; IR spectra; Zeeman component; dilation shift; fine-structure transition; frequency measurement; high resolution spectroscopy; Absorption; Atom lasers; Atomic beams; Frequency measurement; Laser transitions; Motion detection; Probes; Resonance; Spectroscopy; Tunable circuits and devices;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
