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Radially- and azimuthally- polarized nanosecond Yb-doped MOPA system incoporating temporal shaping

Lin, Di, Baktash, Neda and Berendt, Martin et al. (2017) Radially- and azimuthally- polarized nanosecond Yb-doped MOPA system incoporating temporal shaping Optics Letters, 42, (9), pp. 1740-1743. (doi:10.1364/OL.42.001740).

Record type: Article

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 pre-amplification 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 nanosecond 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 >12dB and 2.2 respectively

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More information

Accepted/In Press date: 8 February 2017
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 405698
URI: http://eprints.soton.ac.uk/id/eprint/405698
ISSN: 0146-9592
PURE UUID: c7c8838e-df3d-4850-ad78-be1fba59d6fa

Catalogue record

Date deposited: 09 Feb 2017 13:54
Last modified: 13 Sep 2017 04:01

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Contributors

Author: Di Lin
Author: Neda Baktash
Author: Martin Berendt
Author: Peter Kazansky
Author: Shaif-ul Alam

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