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Lin D, Baktash N, Berendt M, et al. Radially and azimuthally polarized nanosecond Yb-doped fiber MOPA system incorporating temporal shaping. Opt Lett. 2017;42(9):1740-1743doi: 10.1364/OL.42.001740.
Lin, D., Baktash, N., Berendt, M., Beresna, M., Kazansky, P. G., Clarkson, W. A., Alam, S. U., & Richardson, D. J. (2017). Radially and azimuthally polarized nanosecond Yb-doped fiber MOPA system incorporating temporal shaping. Optics letters, 42(9), 1740-1743. https://doi.org/10.1364/OL.42.001740
Lin, D, et al. "Radially and azimuthally polarized nanosecond Yb-doped fiber MOPA system incorporating temporal shaping." Optics letters vol. 42,9 (2017): 1740-1743. doi: https://doi.org/10.1364/OL.42.001740
Lin D, Baktash N, Berendt M, Beresna M, Kazansky PG, Clarkson WA, Alam SU, Richardson DJ. Radially and azimuthally polarized nanosecond Yb-doped fiber MOPA system incorporating temporal shaping. Opt Lett. 2017 May 01;42(9):1740-1743. doi: 10.1364/OL.42.001740. PMID: 28454149.
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Opt Lett. 2017 May 01;42(9):1740-1743. doi: 10.1364/OL.42.001740.

Radially and azimuthally polarized nanosecond Yb-doped fiber MOPA system incorporating temporal shaping.

Optics letters

D Lin, N Baktash, M Berendt, M Beresna, P G Kazansky, W A Clarkson, S U Alam, D J Richardson

PMID: 28454149 DOI: 10.1364/OL.42.001740

Abstract

We report an Yb-doped fiber master-oscillator power-amplifier (MOPA) system with the capability of selectively generating doughnut-shaped radially and azimuthally polarized beams with user-defined temporal pulse shapes. The desired output polarization was generated with the aid of a nanograting spatially variant half-waveplate (S-waveplate). The latter was used to convert the linearly polarized fundamental (LP01) mode output from the preamplification stages to a doughnut-shaped radially polarized beam prior to the power amplifier stage. A maximum output pulse energy of ∼860  μJ was achieved for ∼100  ns pulses at 25 kHz with user-defined pulse shape for both radial and azimuthal polarization states. The polarization purity and beam propagation factor (M2) were measured to be >12  dB and 2.2, respectively.

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