Q-switching is a technique used to generate high-intensity, short laser pulses, as opposed to continuous wave (CW) output. In the context of Q-switched lasers, "frequency" specifically refers to the Pulse Repetition Rate (PRR)--the number of pulses emitted per second (Hz).
Impact on Processing and Performance In applications such as laser marking, a higher repetition rate facilitates faster processing speeds and smoother line quality due to increased pulse overlap. However, there is an inherent trade-off. Increasing the frequency reduces the time available for energy to build up in the laser gain medium between pulses. Consequently, operating at higher frequencies generally results in lower pulse energy and reduced peak power compared to lower frequency operation.