We report a simple theoretical model for the calculation of the dependence of filter quantum efficiency versus laser pump power in an atomic Rb vapor laser-excited optical filter. We present the calculations for a Rb filter transitions that can be used to detect the practial and important frequency-doubled Nd lasers. The results of these calculations show the filter's quantum efficiency versus the laser pump power. The laser pump powers required range from 2.4 to 60 mW per square centimeter of filter aperture.
We report a simple theoretical model for the calculation of the dependence of filter quantum efficiency versus laser pump power in an atomic Rb vapor laser-excited optical filter. We present the calculations for a 532.4-nm Rb filter that can be used to detect the practical and important frequency-doubled Nd:YAG laser. The results of these calculations show that the filter's quantum efficiency is relatively insensitive to the laser pump power. The laser powers required to pump the filter range from 3.6 to 226 mW per square centimeter of filter aperture.
Several groups1–4 have recently proposed a simple and powerful optical technique for obtaining ultrahigh time resolution, which is limited only by the coherence time of the excitation light rather than by the overall pulse duration. The present work reports an application of this technique to study the dephasing rates of the Na and Rb resonance lines perturbed by several atmospheres of argon gas. By comparison with traditional measurements, we demonstrate that relaxation processes occurring on time scales much shorter than the excitation pulse duration can indeed be accurately and unambiguously measured using the present technique.