As in all Q-Switched solid state lasers, the average output power and pulse energy are a function of the Q-Switch frequency. The figure below indicates schematically the form of both the fundamental and 355nm output power for repetition frequencies from single shot to 100 kHz.

Model 3500 lasers use a Nd:YV04 gain medium in which the highest average UV power occurs at approximately 25 kHz. At high repetition rates, an increase in the pulse width of the fundamental contributes to an accelerated decline in the UV pulse energy. For this reason, few DPSS lasers have significant UV power at high Q-Switched frequencies. The power capability and stable fundamental mode at high Q-Switched frequencies, a result of DiSC pumping, allow the Model 3500 to achieve repetition rates up to 100 kHz at >1.0 Watt average power.