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The power scaling of narrow-band and near-diffraction-limited solid state laser radiation by spectral beam combining has been demonstrated during the last years with high efficiencies > 90 % [1,2] in large multiplexing modules (l ≈ 1 m). We present a diode laser prototype based on a compact dense wavelength division multiplexer (DWDM) for diode laser bars with low average beam quality (M2 = 45)...
Amplification by Innoslab amplifiers has been applied to ultrafast laser pulses for many years. Recent progress in high power laser diodes and a new pumping scheme made application of ytterbium doped laser crystals which support subpicosecond pulse durations possible. Ultrashort pulse experiments were carried out with a Yb:KYW fs-oscillator (HighQ Laser Innovation GmbH).To enable shorter pulse lengths...
A diode-pumped ytterbium doped INNOSLAB fs-amplifier with 400 W output power was realized. The pulse duration of the output pulses was almost transform limited 682 fs for Yb:YAG at a pulse repetition rate of 76 MHz. This was achieved at room temperature without the use of any stretcher or compressor setup.
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