@article{1996-haubrich-wynands-opt-commun-v123-p558, Abstract = {

We have modified a commercial Ti:sapphire laser to allow optical phase stabilization to an extremely stable semiconductor laser, which in turn is locked to a Doppler-free resonance in a cesium vapor cell. For time scales from 10 μs up to several hours the combined system has a rms linewidth of 4 kHz with respect to the cesium resonance. The system allows the resolution of extremely narrow resonances in a cloud of trapped atoms.

}, Author = {Haubrich, D. AND Wynands, R.}, Journal = {Opt. Commun.}, Pages = {558}, Title = {{A modified commercial Ti:sapphire laser with 4 kHz rms linewidth}}, Volume = {123}, Year = {1996} }