High gain and per in double-pass rod fiber amplifier module

Jean François Lupi, Mette Marie Johansen, Mattia Michieletto, Jesper Lægsgaard

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

In the past few years single pass amplification using rod-type fibers has become an interesting solution for high power laser sources. In the meantime, double-pass configuration has not been extendedly studied [1,2]. After theoretical [1] and experimental work [3] on mode degradation occurring in double pass, we present here new results obtained with an upgraded setup using state of the art rod-type fiber based on a distributed mode filter design (NKT Photonics aeroGAIN-ROD-PM85) [4]. We obtain up to 112 W output power, i.e. 35 dB of amplification when seeding with 30 mW of 20 ps/20 MHz/1030 nm pulses, in a preliminary unoptimized setup, pump power limited. We observe excellent beam quality and a polarization extinction ratio (PER) above 20 dB.

Original languageEnglish
Title of host publicationProceedings of 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
PublisherIEEE
Publication date1 Jun 2019
Article number8871575
ISBN (Electronic)9781728104690
DOIs
Publication statusPublished - 1 Jun 2019
Event2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference - ICM Centre of the Munich Trade Fair Centre., Munich, Germany
Duration: 23 Jun 201927 Jun 2019
http://www.cleoeurope.org/

Conference

Conference2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference
LocationICM Centre of the Munich Trade Fair Centre.
CountryGermany
CityMunich
Period23/06/201927/06/2019
SponsorEPS Young Minds, The European Physical Society
Internet address

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