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High power picosecond MOPA with anisotropic ytterbium-doped tapered double-clad fiber

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Details

Original languageEnglish
Title of host publicationProceedings of SPIE
Subtitle of host publicationFiber Lasers and Glass Photonics: Materials through Applications
EditorsS Taccheo, JI Mackenzie, M Ferrari
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Number of pages7
Volume10683
ISBN (Electronic)9781510618930
ISBN (Print)9781510618923
DOIs
Publication statusPublished - 2018
Publication typeA4 Article in a conference publication
EventConference on Fiber Lasers and Glass Photonics - Materials through Applications - Strasbourg, France
Duration: 22 Apr 201826 Apr 2018

Publication series

NameProceedings of SPIE
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Volume10683
ISSN (Print)0277-786X

Conference

ConferenceConference on Fiber Lasers and Glass Photonics - Materials through Applications
CountryFrance
CityStrasbourg
Period22/04/1826/04/18

Abstract

Generation of ultrashort pulses with high average power and moderately high pulse energy generally requires a mode-locked laser followed by several fiber amplifiers in a master-oscillator power-amplifier configuration. Recently, gain-switched diode lasers have emerged as a viable replacement to mode-locked oscillators as sources of sub-100 ps pulses in these systems, but the low output power available from the diodes necessitates the use of multiple costly amplifier stages. Here, we demonstrate the generation of 1.7 mu J pulses at 1030 nm, and 11.7 mu J pulses at 1064 nm from a gain-switched diode seeded compact MOPA with only two amplification stages. The final stage is a tapered fiber amplifier, whose geometry efficiently suppresses amplified spontaneous emission and allows reaching a gain of similar to 40 dB. This research work is still in progress, and further increase in pulse energy should be possible by optimizing the setup.

Keywords

  • Fiber laser, active fiber, fiber amplifier, COMPACT

Publication forum classification

Field of science, Statistics Finland