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Thin-disk multipass amplifier delivering sub-400 fs pulses with excellent beam quality at an average power of 1 kW

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Thin-disk multipass amplifier delivering sub-400 fs pulses with excellent beam quality at an average power of 1 kW

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Ultrafast lasers have become essential for many fields of material processing such as precise ablation, drilling of deep holes, or surface structuring. Depending on the application, different values of parameters such as wavelength, pulse duration, repetition rate, and pulse energy are required. Either way, all applications require stable lasers in terms of beam pointing, output power, and beam quality. Besides a small beam propagation factor M2 also a symmetric intensity distribution along the whole caustic, as well as high stigmatism is often of importance for applications.

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