The exact requirements for intensity, duration, and repetition frequency for EIT realized with pulsed laser will depend on the specific application and the characteristics of the system you are using. Generally, the intensity should be high enough to ensure that the stimulated transition is saturated, the pulse duration should be short enough to ensure that the atom-field interaction is adiabatic, and the repetition frequency should be low enough to ensure that the effect of spontaneous emission is minimized.For more details, you can refer to the following references:1. Zoubi, H., & Ritsch, H. (2011). Electromagnetically induced transparency. Advances in atomic, molecular, and optical physics, 60, 1-66.2. Xiao, M., Gao, K., Li, X., & Sun, C. P. (2016). Electromagnetically induced transparency: a review. Reports on Progress in Physics, 79(7), 074401.3. Passante, R., & Persico, F. (2018). Electromagnetically induced transparency in dilute atomic media. Laser & Photonics Reviews, 12(2), 1700227.