Widely tunable pulse durations from a passively mode-locked thin disk Yb:YAG laser

F. Brunner; R. Paschotta; G.J. Spühler; J. Aus der Au; F. Morier-Genoud; U. Keller; R. Hövel; R. Hövel; M. Moser; M. Moser; S. Erhard; S. Erhard; M. Karszewski; M. Karszewski; A. Giesen; A. Giesen

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2001),
paper CWF1

Widely tunable pulse durations from a passively mode-locked thin disk Yb:YAG laser

F. Brunner, R. Paschotta, G.J. Spühler, J. Aus der Au, F. Morier-Genoud, U. Keller, R. Hövel, M. Moser, S. Erhard, M. Karszewski, and A. Giesen

Conference on Lasers and Electro-Optics 2001

Baltimore, Maryland United States
6–10 May 2001
ISBN: 1-55752-662-1

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Yb Lasers (CWF)

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F. Brunner, R. Paschotta, G. J. Spühler, J. A. d. Au, F. Morier-Genoud, U. Keller, R. Hövel, M. Moser, S. Erhard, M. Karszewski, and A. Giesen, "Widely tunable pulse durations from a passively mode-locked thin disk Yb:YAG laser," in Conference on Lasers and Electro-Optics, J. Kafka, K. Vahala, R. Williamson, and A. Willner, eds., OSA Technical Digest (Optica Publishing Group, 2001), paper CWF1.

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Abstract

Recently, we have demonstrated a novel, power- scalable concept for femtosecond lasers, based on a thin disk Yb:YAG laser head¹ and a semiconductor saturable absorber mirror (SESAM²) for passive mode locking.³ The first experiment resulted in 700-fs soliton pulses with 16-W average- power.³ Stable mode locking was obtained only in a narrow range of pulse durations around 0.7 ps. This is the consequence of spatial hole burning (SHB), which inevitably occurs in thin disk lasers. Recently, we have developed a theoretical model that can quantitatively describe these effects and proposed a novel scheme to weaken the effect of SHB by using a laser cavity where the laser beam hits the thin disk under two different angles^4.

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