Journal ArticleDOI
Ultra‐large effective‐area, higher‐order mode fibers: a new strategy for high‐power lasers
Siddharth Ramachandran,John M. Fini,Marc D. Mermelstein,Jeffrey W. Nicholson,Samir Ghalmi,Man F. Yan +5 more
TLDR
In this paper, the authors describe the physics and properties of a novel optical fiber that would be attractive for building high-power fiber lasers and amplifiers, and demonstrate that for applications requiring meter-length fibers, signal stability actually increases with mode order.Abstract:
This paper describes the physics and properties of a novel optical fiber that would be attractive for building high-power fiber lasers and amplifiers. Instead of propagating light in the fundamental, Gaussian-shaped mode, we describe a fiber in which the signal is forced to travel in a single, desired higher order mode (HOM). This provides for several advantages over the conventional approach, ranging from significantly higher ability to scale mode areas (and hence laser powers) to managing dispersion for ultra-short pulses - a capability that is practically nonexistent in conventional fibers. Particularly interesting is the tact that this approach challenges conventional wisdom, and demonstrates that for applications requiring meter-length fibers (as in high-power lasers), signal stability actually increases with mode order. Using this approach, we demonstrate mode areas exceeding 3200 μm 2 , and propagate signals with negligible mode distortions over up to 50-meter lengths. We describe several pulse propagation experiments in which we test the nonlinear response of this fiber platform, ranging from managing dispersive effects in femtosecond pulse systems, to reducing Brillouin scattering impairments in systems operating with the nanosecond pulses.read more
Citations
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Journal ArticleDOI
High power fiber lasers: current status and future perspectives [Invited]
TL;DR: This paper reviews the current state of the art in terms of continuous-wave and pulsed performance of ytterbium-doped fiber lasers, the current fiber gain medium of choice, and by far the most developed in Terms of high-power performance.
Journal ArticleDOI
Roadmap on structured light
Halina Rubinsztein-Dunlop,Andrew Forbes,Michael V Berry,Mark R. Dennis,David L. Andrews,Masud Mansuripur,Cornelia Denz,Christina Alpmann,Peter Banzer,Thomas Bauer,Ebrahim Karimi,Lorenzo Marrucci,Miles J. Padgett,Monika Ritsch-Marte,Natalia M. Litchinitser,Nicholas P. Bigelow,Carmelo Rosales-Guzmán,Aniceto Belmonte,Juan P. Torres,Tyler W. Neely,Mark Baker,Reuven Gordon,Alexander B. Stilgoe,Jacquiline Romero,Andrew White,Robert Fickler,Alan E. Willner,Guodong Xie,Benjamin J. McMorran,Andrew M. Weiner +29 more
TL;DR: In this paper, the key fields within structured light from the perspective of experts in those areas, providing insight into the current state and the challenges their respective fields face, as well as the exciting prospects for the future that are yet to be realized.
Journal ArticleDOI
Space-division multiplexing: the next frontier in optical communication
TL;DR: This paper focuses on SDM for fiber-optic communication using few-mode fibers or multimode fibers, in particular on the critical challenge of mode crosstalk, and presents the prospects for SDM in optical transmission and networking.
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
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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Long-period fiber grating as band-rejection filters
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Journal ArticleDOI
Long-period fiber gratings as band-rejection filters
Ashish Madhukar Vengsarkar,Paul Joseph Lemaire,J. B. Judkins,Vikram Bhatia,Turan Erdogan,John E. Sipe +5 more
TL;DR: In this paper, a new class of long-period fiber gratings that can be used as in-fiber, low-loss, band-rejection filters is presented.
Proceedings Article
Laser-induced damage in dielectrics with nanosecond-to-subpicosecond pulses
TL;DR: The application of chirped-pulse amplification to shortpulse lasers has led to a dramatic increase in the number of high-power sub-picosecond laser systems.