20 February 2008 Power scaling of fiber-based amplifiers seeded with microchip lasers
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Abstract
We summarize the performance of mode-filtered, Yb-doped fiber amplifiers seeded by microchip lasers with nanosecond-duration pulses. These systems offer the advantages of compactness, efficiency, high peak power, diffraction-limited beam quality, and widely variable pulse energy and repetition rate. We review the fundamental limits on pulsed fiber amplifiers imposed by nonlinear processes, with a focus on the specific regime of nanosecond pulses. Different design options for the fiber and the seed laser are discussed, including the effects of pulse duration, wavelength, and linewidth. We show an example of a microchip-seeded, single-stage, single-pass fiber amplifier that produced pulses with 1.1 MW peak power, 0.76 mJ pulse energy, smooth temporal and spectral profiles, diffractionlimited beam quality, and linear polarization.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paul E. Schrader, Paul E. Schrader, Jean-Philippe Fève, Jean-Philippe Fève, Roger L. Farrow, Roger L. Farrow, Dahv A. V. Kliner, Dahv A. V. Kliner, Randal L. Schmitt, Randal L. Schmitt, Binh T. Do, Binh T. Do, } "Power scaling of fiber-based amplifiers seeded with microchip lasers", Proc. SPIE 6871, Solid State Lasers XVII: Technology and Devices, 68710T (20 February 2008); doi: 10.1117/12.778388; https://doi.org/10.1117/12.778388
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