Low-nonlinearity single-transverse-mode ytterbium-doped photonic crystal fiber amplifier.
Jens Limpert,Andreas Liem,M. Reich,Thomas Schreiber,Stefan Nolte,Holger Zellmer,Andreas Tünnermann,Jes Broeng,A. Petersson,Christian Jakobsen +9 more
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TLDR
An air-clad large-core single-transverse-mode ytterbium-doped photonic crystal fiber with a mode-field-diameter of 35 microm allowing for the frequency up-conversion of these pulses using narrow-bandwidth phase matched nonlinear crystals.Abstract:
We report on an air-clad large-core single-transverse-mode ytterbium-doped photonic crystal fiber with a mode-field-diameter of 35 µm, corresponding to a mode-field-area of ~1000 µm2. In a first experiment this fiber is used to amplify 10-ps pulses to a peak power of 60 kW without significant spectral broadening due to self-phase modulation allowing for the frequency up-conversion of these pulses using narrow-bandwidth phase-matched nonlinear crystals.read more
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Journal ArticleDOI
High-energy femtosecond fiber lasers based on pulse propagation at normal dispersion
TL;DR: In this paper, the authors review several new modes of pulse formation and propagation in fiber-based devices and propose a theoretical framework to unify our view of normal-dispersion femtosecond lasers.
Journal ArticleDOI
Extended single-mode photonic crystal fiber lasers
Jens Limpert,Oliver Schmidt,Jan Rothhardt,Fabian Röser,Thomas Schreiber,Andreas Tünnermann,S. Ermeneux,P. Yvernault,F. Salin +8 more
TL;DR: The robust single-transverse-mode propagation in a passive 100 microm core fiber with a similar design reveals the potential of extended large-mode-area photonic crystal fibers.
Journal ArticleDOI
High-power rod-type photonic crystal fiber laser.
Jens Limpert,N. Deguil-Robin,Inka Manek-Hönninger,François Salin,Fabian Röser,Andreas Liem,Thomas Schreiber,Stefan Nolte,Holger Zellmer,Andreas Tünnermann,Jes Broeng,A. Petersson,Christian Jakobsen +12 more
TL;DR: A novel ytterbium-doped fiber design that combines the advantages of rod and fiber gain media is reported that has significantly reduced nonlinearity, which allows for scalability in the performance of a high-peak-power fiber laser and amplifier system.
Patent
Single mode propagation in fibers and rods with large leakage channels
TL;DR: In this paper, Holey rods and fibers are used in many optical systems including optical amplification systems, lasers, short pulse generators, Q-switched lasers, etc., and may be used for example for micromachining.
Patent
Glass large-core optical fibers
TL;DR: In this article, the relative refractive index difference is characterized by (ni-n2)/ni, where Ni is the index of refraction of the cladding material in which the claddings are included, and n 2 is the average of the two indices.