High-energy, in-band pumped erbium doped fiber amplifiers

Lim, Ee-Leong, Alam, Shaif-ul and Richardson, David J. (2012) High-energy, in-band pumped erbium doped fiber amplifiers Optics Express, 20, (17), pp. 18803-18818. (doi:10.1364/OE.20.018803).


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We have demonstrated and compared high-energy, in-band pumped erbium doped fiber amplifiers operating at 1562.5 nm under both a core pumping scheme (CRS) and a cladding pumping scheme (CLS). The CRS/CLS sources generated smooth, single-peak pulses with maximum pulse energies of ~1.53/1.50 mJ, and corresponding pulse widths of ~176/182 ns respectively, with an M2 of ~1.6 in both cases. However, the conversion efficiency for the CLS was >1.5 times higher than the equivalent CRS variant operating at the same pulse energy due to the lower pump intensity in the CLS that mitigates the detrimental effects of ion concentration quenching. With a longer fiber length in a CLS implementation a pulse energy of ~2.6 mJ is demonstrated with a corresponding M2 of ~4.2. Using numerical simulations we explain that the saturation of pulse energy observed in our experiments is due to saturation of the pump absorption.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1364/OE.20.018803
ISSNs: 1094-4087 (print)
Related URLs:
Organisations: Optoelectronics Research Centre
ePrint ID: 342417
Date :
Date Event
August 2012Published
Date Deposited: 29 Aug 2012 11:01
Last Modified: 17 Apr 2017 16:41
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/342417

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