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Compensation of pulse-distortion in saturated laser amplifiers

: Schimpf, D.N.; Ruchert, C.; Nodop, D.; Limpert, J.; Tünnermann, A.; Salin, F.

Postprint (214 KByte; PDF; )

Optics Express 16 (2008), No.22, pp.17637-17646
ISSN: 1094-4087
Journal Article, Electronic Publication
Fraunhofer IOF ()

We derive an expression describing pre-compensation of pulse-distortion due to saturation effects in short pulse laser-amplifiers. The analytical solution determines the optimum input pulse-shape required to obtain any arbitrary target pulse-shape at the output of the saturated laser-amplifier. The relation is experimentally verified using an all-fiber amplifier chain that is seeded by a directly modulated laser-diode. The method will prove useful in applications of high power, high energy laser-amplifier systems that need particular pulse-shapes to be efficient, e.g. micromachining and scientific laser-matter-interactions.