Abstract
We present results of the pressure broadening and shift of the rubidium (420.2 nm) spectral line by argon and helium buffer gases at pressures below 10 torr. High-resolution absorption measurements were performed with a single-mode external cavity diode laser, having 20-GHz tuning range and a linewidth of about 1 MHz. Pressure broadening and shift parameters of Lorentzian hyperfine components have been determined. We obtained the redshift of hyperfine spectral lines for He and the blueshift for Ar.
- Received 8 June 2004
DOI:https://doi.org/10.1103/PhysRevA.70.032723
©2004 American Physical Society