Fiber lasers and amplifiers: novel avenues to real-world applications of ultrashort lasers

Andreas Tuennermann; Stefan Nolte; Holger Zellmer

doi:10.1117/12.596374

8 October 2004 Fiber lasers and amplifiers: novel avenues to real-world applications of ultrashort lasers

Andreas Tuennermann, Stefan Nolte, Holger Zellmer

Proceedings Volume 5662, Fifth International Symposium on Laser Precision Microfabrication; (2004) https://doi.org/10.1117/12.596374
Event: Fifth International Symposium on Laser Precision Microfabrication, 2004, Nara, Japan

Abstract

Rare-earth-doped fibers have established themselves as an attractive and pwoer scalable solid-state laser concept. In continuous-wave operation output powers approaching the kW-regime with diffraction-limited beam quality have been demonstrated. In the pulsed regime average powers of more than 50 W even for femtosecond fiber laser systems have been reported. We discuss the feasibility of high average power (> 100 W) and high energy (~100 μJ) femtosecond fiber CPA systems. Novel fiber geometries based on microstructured large-core air-clad fibers are introduced, which allow for a significant performance scaling. Furthermore, an all-fiber CPA system including an air-core photonic band-gap fiber compressor is presented. This approach opens the avenue to a completely fiber integrated high performance short pulse laser system. Applying the ultrafast fiber laser system three-dimensional photonic structures in different glasses and also crystalline media have been generated by tight focusing of the ultrashort laser pulses into the material. Using the ultrashort pulse lasers we fabricated low loss waveguides (< 0.5 dB/cm) at writing speeds of 100 mm/s. The influence of the writing speed on the produced structures as well as their optical properties will be discussed in detail.

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Andreas Tuennermann, Stefan Nolte, and Holger Zellmer "Fiber lasers and amplifiers: novel avenues to real-world applications of ultrashort lasers", Proc. SPIE 5662, Fifth International Symposium on Laser Precision Microfabrication, (8 October 2004); https://doi.org/10.1117/12.596374

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KEYWORDS

Fiber lasers

Fiber amplifiers

Ultrafast phenomena

Waveguides

Refractive index

Dispersion

Laser systems engineering

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