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High-power single-stage single-crystal Yb:YAG fiber amplifier for radially polarized ultrashort laser pulses

Abstract : We report on a single-stage high-power amplification of a radially polarized mode-locked laser beam in a single-crystal fiber (SCF) amplifier. The seed beam was amplified by a factor of 5.0 to an average output power of 66.3 W. The pulse duration of the amplified pulses was measured to be 909 fs at a repetition rate of 40.7 MHz, corresponding to a pulse energy of 1.63 \upmuJ and a resulting pulse peak power of 1.58 MW. The output beam showed a very high quality of the doughnut-shaped intensity distribution and furthermore a high radial polarization purity.
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https://hal-iogs.archives-ouvertes.fr/hal-01585940
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Submitted on : Friday, September 23, 2022 - 2:10:08 PM
Last modification on : Friday, September 23, 2022 - 2:12:15 PM

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Michael Eckerle, Frieder Beirow, Tom Dietrich, Frederik Schaal, Christof Pruss, et al.. High-power single-stage single-crystal Yb:YAG fiber amplifier for radially polarized ultrashort laser pulses. Applied Physics B - Laser and Optics, Springer Verlag, 2017, 123 (5), pp.1-6. ⟨10.1007/s00340-017-6720-0⟩. ⟨hal-01585940⟩

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