The distortion of laser beams in a burst mode dye laser with 10 kHz repetition rates

Abstract

In this paper, the distortion of laser beams in the burst of a burst mode dye laser at 10 kHz repetition rates is researched dynamically. The distortion caused by the thermal lens effects is shown when the repetition rates surpass 2.5 kHz, and is observed emerging 100 μs after the first pulse in the burst. The deflection angles between the laser beams of the first pulse in the burst and each pulse in the burst are measured to describe the distortion. The deflection angles increase to the steady states 400 μs after the first pulse. The maximum deflection angles increase from 0.5 mrad to 0.85 mrad at 10 kHz with the pump pulse energies increasing from 12 mJ to 30 mJ, and increase from 0.23 mrad to 0.4 mrad at 5 kHz with the pump pulse energies increasing from 12 mJ to 30 mJ. The results show that the distortion increases when the pump pulse energies and the repetition rates of the dye laser increase.