The Pump-Probe Technique is a powerful experimental method used in physics and chemistry to study fast processes at the molecular level. It involves two laser pulses: the first pulse, called the "pump," excites the sample, while the second pulse, the "probe," measures the changes in the sample after a controlled time delay. This allows researchers to observe dynamic events, such as chemical reactions or electronic transitions, in real-time. By varying the time delay between the pump and probe pulses, scientists can capture snapshots of the system's evolution. This technique is widely used in fields like ultrafast spectroscopy and materials science, providing insights into phenomena such as electron dynamics and energy transfer in molecules.