Standoff Methods for the Detection of Threat Agents: A Review of Several Promising Laser-Based Techniques
Figure 6
Rabi frequencies and population transfers as a function of time. (a) The Rabi frequencies of the pump and Stokes laser pulses. Note that the Stokes pulse (coupling states and ) precedes the pump pulse (coupling states and ). (b) The populations of states , , and as a function of time. Note that the population shifts from to during the time when the laser pulses overlap with very little population ever reaching state .