Population inversion of the 2P1/2 and 2S1/2 levels and continuous-wave, three-level laser oscillation at 795 nm on the D1 transition of the rubidium atom has been demonstrated. Using a titanium sapphire laser as a pump source, we obtained a slope power efficiency of 54% relative to absorbed pump power, consistent with homogeneous broadening of the rubidium pump and laser transitions. The end-pumped rubidium laser performance was well described by use of literature spectroscopic and kinetic data in a model that takes into account ground-level depletion and a pump spectral bandwidth that is substantially larger than the collisionally broadened pump transition spectral width.
© 2003 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.1340) Lasers and laser optics : Atomic gas lasers
(140.3460) Lasers and laser optics : Lasers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
William F. Krupke, Raymond J. Beach, V. Keith Kanz, and Stephen A. Payne, "Resonance transition 795-nm rubidium laser," Opt. Lett. 28, 2336-2338 (2003)