Browsing by Subject "All-fiber combining"

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    Innovative laser sources operating around 2 μm
    (Elsevier, 2016) Kracht, D.; Sayınç, H.; Yılmaz, Saniye Sinem; Wysmolek, M.; Hausmann, K.; Ottenhues, C.; Wandt, D.; Wienke, A.; Neumann, J.
    We report on a variety of continuous wave and pulsed laser sources based on Thulium- and Holmium-doped materials, emitting in the spectral range around 2 μm. This includes continuous wave Thulium-doped fiber lasers which have been realized based on the beam combining technique by using tapered fused bundles and truly single mode WDM cascades, respectively. A pulsed laser source emitting nano- or picosecond pulses has been developed in a master oscillator power amplifier (MOPA) configuration, which consists of a gain-switched diode operating at a wavelength of 1.95 μm, followed by Thulium-doped fiber-based pre- and main amplifiers. Furthermore, we present a femtosecond regenerative amplifier system using Thulium:YAP and Holmium:YAG crystals with emission wavelengths around 1.95 μm and 2.1 μm, respectively. Output energies of more than 700 μJ have been generated with both systems.