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

Radially- and azimuthally- polarized nanosecond Yb-doped MOPA system incorporating temporal shaping
Radially- and azimuthally- polarized nanosecond Yb-doped MOPA system incorporating temporal shaping
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.
0146-9592
1740-1743
Lin, Di
d858c2c7-6eab-49d8-87e7-6b71d9bad013
Baktash, Neda
a7d4bcbf-0681-4874-a137-2245430afef3
Berendt, Martin
8bbeb612-7bcf-4d49-8448-b3c0ef3cc362
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Kazansky, Peter
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Clarkson, William
3b060f63-a303-4fa5-ad50-95f166df1ba2
Alam, Shaif-ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Lin, Di
d858c2c7-6eab-49d8-87e7-6b71d9bad013
Baktash, Neda
a7d4bcbf-0681-4874-a137-2245430afef3
Berendt, Martin
8bbeb612-7bcf-4d49-8448-b3c0ef3cc362
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Kazansky, Peter
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Clarkson, William
3b060f63-a303-4fa5-ad50-95f166df1ba2
Alam, Shaif-ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Lin, Di, Baktash, Neda and Berendt, Martin et al. (2017) Radially- and azimuthally- polarized nanosecond Yb-doped MOPA system incorporating temporal shaping. Optics Letters, 42 (9), 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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OL Submission Radially polarized nanosecond Yb-MOPA - Accepted Manuscript
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More information

Accepted/In Press date: 8 February 2017
e-pub ahead of print date: 24 April 2017
Published date: May 2017
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 405698
URI: https://eprints.soton.ac.uk/id/eprint/405698
ISSN: 0146-9592
PURE UUID: c7c8838e-df3d-4850-ad78-be1fba59d6fa
ORCID for David Richardson: ORCID iD orcid.org/0000-0002-7751-1058

Catalogue record

Date deposited: 09 Feb 2017 13:54
Last modified: 06 Aug 2019 04:01

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