Undamped resonance spiking by internal modulation of pulsed solid state lasers |
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Authors: | R. Stemme J. Junghans G. Herziger H. Weber |
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Affiliation: | Institute of Applied Physics at University of Berne, CH-3000 Berne Switzerland |
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Abstract: | Cavity loss modulation is investigated in the low-frequency range of pulsed Nd-lasers. The response of the system shows a typical resonant behaviour, whose resonance frequency is equal to the frequency of the relaxation oscillations. The resonance step-up is in the order of 103, which means that an extremely small driving voltage at the electrooptic cell results in very regular, undamped spikes.Experiments are performed with a pulsed Nd: YAG laser. Pulse power, half-width, and distance are in the range required for controlled material removal in high quality laser material processing. |
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