Journal ArticleDOI
Light propagation with ultralarge modal areas in optical fibers.
Siddharth Ramachandran,Jeffrey W. Nicholson,Samir Ghalmi,Man Yan,Patrick W. Wisk,Eric M. Monberg,F. V. Dimarcello +6 more
TLDR
In this article, the authors demonstrate robust single-transverse-mode light propagation in higher-order modes of a fiber, with effective area Aeff ranging from 2100 to 3200 μm2.Abstract:
We demonstrate robust single-transverse-mode light propagation in higher-order modes of a fiber, with effective area Aeff ranging from 2100 to 3200 μm2. These modes are accessed using long-period fiber gratings that enable higher-order-mode excitation over a bandwidth of 94 mm with greater than 99% of the light in the desired mode. The fiber is designed such that the effective index separation between modes is always large, hence minimizing in-fiber mode mixing and enabling light propagation over lengths as large as 12 m, with bends down to 4.5 cm radii. The modal stability increases with mode order, suggesting that Aeff of this platform is substantially scalable.read more
Citations
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Journal ArticleDOI
High-power fibre lasers
Cesar Jauregui,Jens Limpert,Jens Limpert,Jens Limpert,Andreas Tünnermann,Andreas Tünnermann,Andreas Tünnermann +6 more
TL;DR: An overview of the state of the art in the field can be found in this paper, where the authors discuss present challenges and the future outlook of high-power fiber laser applications.
Journal ArticleDOI
Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power
Jay W. Dawson,Michael J. Messerly,Raymond J. Beach,M. Y. Shverdin,Eddy A. Stappaerts,Arun K. Sridharan,Paul H. Pax,John E. Heebner,Craig W. Siders,Christopher P. J. Barty +9 more
TL;DR: This analysis shows that if the fiber's MFD could be increased arbitrarily, 36 kW of power could be obtained with diffraction-limited quality from a fiber laser or amplifier, but limits to the scaling of the MFD may restrict fiber lasers to lower output powers.
Journal ArticleDOI
Bessel and annular beams for materials processing
TL;DR: In this paper, proper-ties, generation methods and emerging applications for non-Gaussian beam shapes are discussed, including Bessel, an-nular, and vortex beams.
Journal ArticleDOI
Recent advances in fibre lasers for nonlinear microscopy
Chris Xu,Frank W. Wise +1 more
TL;DR: Recent advances are leading to high-performance sources with the potential for robust, inexpensive, integrated instruments, and challenges and opportunities for fiber lasers in nonlinear bioimaging are identified.
Journal ArticleDOI
Optical vortices in fiber
TL;DR: In this article, the authors discuss the means by which optical fibers, hitherto considered unsuitable for stably supporting optical vortices, may be used to generate and propagate such exotic beams.
References
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Journal ArticleDOI
Single-mode excitation of multimode fibers with ultrashort pulses.
TL;DR: Single-mode excitation of step-index multimode fibers with light sources with short temporal coherence lengths is demonstrated and designs with reduced microbending-induced mode coupling are described that allow the propagation of the fundamental mode over long lengths with negligible mode coupling even in the presence of tight fiber bends.
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.
Journal ArticleDOI
Mode-scalable fiber-based chirped pulse amplification systems
TL;DR: In this paper, the development of high-power fiber technology, which recently has led to millijoule energies and /spl sim/10 W average powers from various femtosecond fiber systems, is reviewed.
Journal ArticleDOI
Breaking the limit of maximum effective area for robust single-mode propagation in optical fibers
TL;DR: A breakthrough was made toward the development of practical ultra-high-power fiber lasers as negligible loss of the fiber at bending diameters as small as 15 cm was observed.
Journal ArticleDOI
Bandwidth control of long-period grating-based mode converters in few-mode fibers.
TL;DR: It is shown that the bandwidths of such mode converters can be tailored by suitably altering the design of the few-mode fibers, and the demonstration of strong mode conversion (>99%) with long-period fiber gratings over what is believed to be a record bandwidth of 63 nm.