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Highly efficient Yb-free Er-La-Al doped ultra low NA large mode area single-trench fiber laser

Highly efficient Yb-free Er-La-Al doped ultra low NA large mode area single-trench fiber laser
Highly efficient Yb-free Er-La-Al doped ultra low NA large mode area single-trench fiber laser
We demonstrate a 60µm core diameter Yb free Er-La-Al doped single-trench fiber having a 0.038 ultra-low-NA, fabricated using conventional MCVD process in conjunction with solution doping technique. Numerical simulations predict an effective single mode operation with effective area varying from 1,820µm2 to 1,960µm2 (taking bend-induced modal distortion into account) for different thicknesses of trenches and resonant rings at a constant bend radius of 25cm. Moreover, all solid structure favors easy cleaving and splicing. Experimental measurements demonstrate a robust effective single mode operation. Furthermore, with a 4%-4% laser cavity, this fiber shows a record efficiency of 46% with respect to the absorbed pump power.
1094-4087
28282-28827
Jain, Deepak
787e5045-8862-46ba-b15e-82c2fe60495f
Alam, Shaif-ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Barua, Pranabesh
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Núñez-Velázquez, Martin
3c102956-ac51-4d02-9fe6-6628557cfbff
Jain, Deepak
787e5045-8862-46ba-b15e-82c2fe60495f
Alam, Shaif-ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Barua, Pranabesh
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Núñez-Velázquez, Martin
3c102956-ac51-4d02-9fe6-6628557cfbff

Jain, Deepak, Alam, Shaif-ul, Sahu, Jayanta, Jung, Yongmin, Barua, Pranabesh and Núñez-Velázquez, Martin (2015) Highly efficient Yb-free Er-La-Al doped ultra low NA large mode area single-trench fiber laser. Optics Express, 23 (22), 28282-28827. (doi:10.1364/OE.23.028282).

Record type: Article

Abstract

We demonstrate a 60µm core diameter Yb free Er-La-Al doped single-trench fiber having a 0.038 ultra-low-NA, fabricated using conventional MCVD process in conjunction with solution doping technique. Numerical simulations predict an effective single mode operation with effective area varying from 1,820µm2 to 1,960µm2 (taking bend-induced modal distortion into account) for different thicknesses of trenches and resonant rings at a constant bend radius of 25cm. Moreover, all solid structure favors easy cleaving and splicing. Experimental measurements demonstrate a robust effective single mode operation. Furthermore, with a 4%-4% laser cavity, this fiber shows a record efficiency of 46% with respect to the absorbed pump power.

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Accepted/In Press date: 16 October 2015
e-pub ahead of print date: 20 October 2015
Published date: 2 November 2015
Organisations: Optoelectronics Research Centre, Electronics & Computer Science

Identifiers

Local EPrints ID: 382669
URI: https://eprints.soton.ac.uk/id/eprint/382669
ISSN: 1094-4087
PURE UUID: 3f8f4ae9-dd68-4bec-9d3a-52bc17587adb
ORCID for Martin Núñez-Velázquez: ORCID iD orcid.org/0000-0003-0774-3272

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Date deposited: 03 Nov 2015 14:41
Last modified: 20 Jul 2019 00:26

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Contributors

Author: Deepak Jain
Author: Shaif-ul Alam
Author: Jayanta Sahu
Author: Yongmin Jung
Author: Pranabesh Barua

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