Because of recent advancements in high power fiber lasers, there is a need to either improve the performance of tgg crystals or develop alternative materials that can handle the increasing power levels. In amplifiers for ultrashort optical pulses, the optical peak intensities can become very high, so that detrimental. Basics and features of highpower fiber laser semantic scholar. Highlight flseries separate process fibers, thus allowing time or energy sharing amongst four workstations with a single laser. The fiber laser based trumark series 5000 offers the optimum combination of high power, high frequencies, and adjustable pulse duration. Pdf highenergy, highpower ytterbiumdoped qswitched. Advanced ultrafast fiber laser sources enabled by fiber. Characterization of a highpower erbiumdoped fiber laser. Accutrac singleuse holmium laser fiber flexiva tractip high power singleuse laser fiber introducing trackability designed for reliable, onestep passage through.
Our laser diode portfolio is broad, extending from cw laser diodes to pulsed laser diodes to highpower laser diodes. In a fiber laser, a doped silica active fiber is excited by a diode source. Highpower passive fiber components for allfiber lasers and. New high power fiber laser enables cuttingedge research according to many in the laser industry, fiber lasers are a serious alternative to solidstate and carbon dioxide lasers for industrial materialprocessing applications. Different from previous techniques that aim at suppressing srs, nonlinear fiber amplifier nfa, which manipulates and employs the srs for power scaling in rareearthdoped fiber, is under intensive research in recent years.
About 3 kw could be delivered to a target at about 1. Osa bidirectional pumped high power raman fiber laser. High power fiber lasers can also have applications in the area of power beaming, e. Flat tip scope must be straightened to avoid scope damage tractip fiber can be advanced in. The lowpower optical fiber amplifier 1 1, acclaimed as the mainstay of the fiberbased internet, can be massively scaled to emerge. Laser net, profibus, device net, ethernet, digital, analog nema 12 construction switching up to 6 way wide spread use on welding, cutting, cladding, and. The welding speed is dependent on the laser power used, which is normally 6 mmin and up to 30 mmin for spe cial plates 27. All of the following need to be understood and controlled to achieve the highest optical fiber damage threshold. Blairb anasa goddard space flight center, greenbelt, md, usa 20771. Hpflp continuous wave fiber laser the hpflp is a 1550nm high power cw fiber laser from bktel. Field propagation experiments by nrl demonstrated high power fiber laser performance in a kilometerrange by incoherent beam combining. High power fiber lasers have found a multitude of applications in industry thanks to their superior properties, such as exceptional high beam quality and stability, extreme power scalability.
The koheras boostik hp is a maintenancefree single frequency fiber laser with a unique combination of narrow linewidth, excellent beam quality and high output power. This is due to unwanted raman conversion to the next stokes order with increasing power. Up to four fiber laser units can be combined by an allfiber power combiner for a total nominal power of 8 kw, which can be delivered by up to four 100. The fiber power revolution the remarkably rapid rise in continuous wave cw fiber laser output. Fiber optics for highpower applications features feb.
The highpower fiber laser is superior to other highpower lasers with a gain medium of solid crystal or gas in all aspects such as beam quality, energy efficiency. Fiber optic cables for transmission of high power laser pulses. Highpower fiber laser cutting parameter optimization for. Diodepumped lasers now offer the highest output powers in. Specialty fiber components are an increasingly important part of generating and transmitting highpower laser beams for applications ranging from materials processing to laser surgery to lidar. Dualwavelength bidirectional pumped highpower raman.
Pdf high power ytterbiumdoped fiber lasers fundamentals. In this paper, we reported both the experimental demonstration and theoretical analysis of a raman fiber laser based on a master oscillatorpower amplifier configuration. The most promising technology for high power continuous wave laser systems is the fiber laser technology, which offers better size, weight, and power compared with bulk crystalline or chemical lasers. Scannerintegrated rlw offers high productivity on ac count of its high welding velocity and reduced cycle time. The hpflps uses ges digital controller technologies to compliment the sic devices, yielding high power density and reduced weight. The system consists of a singlewavelength 1070nm seed and onestage bidirectional 976 nm nonwavelengthstabilized laser diodes lds pumped ybdoped fiber amplifier. Here, we demonstrate a high power, cascaded raman fiber laser with near complete wavelength conversion over a wide wavelength and power range. These high brightness lasers provide up to 5 w of output power from a singlemode fiber optic making them ideal for a wide range of industrial and scientific applications. This experimental research highlights the applicability of laser cutting to cementbased materials using multimode fiber lasers. High power singleuse laser fiber boston scientific. High power laser diode module for fiber laser pumping source. Secondly, the output power range over which the high degree of wavelength conversion is maintained is limited. High power laser diode module for fiber laser pumping source akira sakamoto,1 2hirokuni ogawa, shinichi sakamoto,3yuji yamagata, 4 and yumi yamada 4 high power laser diode modules are essential devices for fiber laser systems because properties of the modules directly affect the performance of the fiber laser systems.
May 20, 2011 this occurs in the 50 to 100m region, although the cores in commerical singlemode devices are seldom larger than 30 m. The fiber laserbased trumark series 5000 offers the optimum combination of high power, high frequencies, and adjustable pulse duration. The present work aims to analyze the potential of highpower fiber lasers for nuclear power plant decommissioning. Development of end cap, mfa, and combiner for various optical fibers and new application requirements is an ongoing process. Subsequently, nddoped fiber lasers were developed following the progress in bulk glasses. Fiber optic cables for transmission of highpower laser pulses.
Corelight series high power fiber laser systems are based on lumentum nextgeneration high reliability engines. Thanks to the tradeoff between thermal and nonlinear limits, the impressive progress in core area scaling, and the superb properties of ytterbiumdoped silica, fiber lasers excel as highpower, highbrightness laser. Highpower fiber sources operating in the near and midinfrared spectral regions are very. Lasers are used in a wide range of applications that benefit from the pinsharp spatially coherent beam and immense pulse peak power they can provide.
H igh power fiber lasers can be incoherently combined to form the basis of a highenergy laser system for directed. Pdf on dec 1, 2015, ranjan sen and others published high power fiber lasers. Fiberguide industries offers fibers specifically designed for demanding high power applications such as material processing and fiber lasers. Effects of laser focusing properties on weldability in. Effects of laser focusing properties on weldability in high. Highenergy, highpower ytterbiumdoped qswitched fiber laser. While lamp pumping was originally the only viable approach for most solidstate lasers, pumping with highpower laser diodes diode bars or diode stacks has become more and more widespread. Compact highpower single or multimode fiber lasers singlemode compact lasers offer output powers from 1 to 2. Both high and low power applications from the same laser. Also, for high power co 2 laser welding, it was shown that nozzle standoff distance sd has a negligible influence on bead width, penetration depth and melted area.
Our standard high power fiber offering is detailed below and on the accompanying spec sheets. Fomin et al, 3 kw yb fibre lasers with a singlemode output, international. The present work aims to analyze the potential of high power fiber lasers for nuclear power plant decommissioning. High average power fiber lasers generally consist of a relatively lowpower master oscillator, or seed laser, and power amplifier mopa scheme. Cascaded raman fiber lasers based on random distributed feedback rdfb are proven to be wavelength agile, enabling high powers outside rareearth doped emission windows. Ipgs single largest market for highpower fiber lasers is cutting, and samson says that 8to10kw multimode fiber lasers have become common in that field only in the past two or three years. In cw regime, the ytterbiumdoped fiber laser current power performances are above 10 kw with excellent spatial beam quality 1. The ffc allows easy exchange of process fibers on site. The many types of fiber lasers include low power continuouswave cw and low and highenergy pulsed, including. Directedenergy weapons systems could provide efficient, costeffective countermeasures in an age of drones and other airborne threats.
Osa highpower, cascaded random raman fiber laser with near. While lamp pumping was originally the only viable approach for most solidstate lasers, pumping with high power laser diodes diode bars or diode stacks has become more and more widespread. Hafizi2 1plasma physics division 2icarus research, inc. These components are the backbone of high power fiber delivery and laser systems. Our lowordermode kilowatt class fiber lasers range in power from 1 to 100 kw, operating in cw or modulated modes up to 5 khz. Alexei markevitch, market development manager at ipg photonics oxford, ma, outlines the range of wavelengths and powers available for kilowattclass fiber lasers. Considering the significant practical advantages of optical fibers, this. Highpower fiber lasers for directedenergy applications. In many cases, notably manufacturing, high average power is essential for cutting, welding, and drilling. The generation of high optical powers in lasers involves a number of technical challenges one requires one or several powerful pump sources. This value must be adjusted to compensate for wavelength in a.
Dualwavelength bidirectional pumped highpower raman fiber laser. The high power marking laser is designed for demanding applications with high power requirements and short cycle times. Yls high power fiber lasers power levels from 1kilowatt to 100 kilowatts single mode to 3 kilowatts available low order mode to 50kw water cooled industrial interface. Development of high powerenergy ultrafast fiber lasers for scientific research and industrial applications is one of the most exciting fields in ultrafast optics. The navy fiber laser prototype demonstrator is also called the laser weapon system laws. The first fiber laser was demonstrated by snitzer in 1961 2. Key for the power scaling of high power ytterbium doped. Effects of laser focusing properties on weldability in highpower fiber laser welding of thick highstrength steel plate naoyuki matsumoto graduate school of engineering, osaka university, 21 yamadaoka, suita, osaka 5650871, japan. Co 2 laser high power cutting fiber laser 3,000w co 2 laser 4,000w laser system laser and power supplies computer and software motion system precision cutting applications. Many design constraints need to be considered in order to reliably transmit highpower optical pulses over a fiber optic cable. The first rareearthdoped fiber lasers were operated in the early sixties, and produced a few milliwatts at a wavelength around one micron. Effects of laser focusing properties on weldability in high power fiber laser welding of thick high strength steel plate naoyuki matsumoto graduate school of engineering, osaka university, 21 yamadaoka, suita, osaka 5650871, japan. Osa highpower, cascaded random raman fiber laser with. Symposium on high power fiber lasers and their applications 2006.
Up to 750w depending on fiber size and laser specifications standard temperature range. The increase of output power has allowed the achievement of fiber lasers operating either in high power continuous wave cw regime, or in qswitch or modelocked regimes with even increasing pulse energies. The unique part of this system is the application of nonwavelengthstabilized lds in high power bidirectional. The mo a combination of ge fanuc optional heavy duty industrial motion. And, as laser technology further develops and diversifies, its uses in welding continue to expand. Finally, experimental data on a high power singlemode fiber laser is presented. These applications require precision with minimal surrounding damage and accuracy, both of which can be achieved with a highquality diffractionlimited laser beam. The laser systems offer straightforward integration with new and existing machine tools and are optimized for performance, space savings and cost efficiency. In these systems, by simply adjusting the input pump power and wavelength, highpower lasers can be achieved at any wavelength within the transmission window of optical fibers. Toward highpower nonlinear fiber amplifier high power.
A 9 kw multimode fiber laser is used, and the experimental variables are the watertocement ratio, laser speed, and material compositions such as cement paste, cement mortar and ultra high performance concrete uhpc. In other words, the technology for building highpower fiber lasers had gotten ahead of user needs at the highest power levels. Introduction the field of lasers has a relatively short history starting from 1960 with maimans first demonstration of laser action in ruby 1. Rp photonics encyclopedia highpower lasers, highpowered.
High power fiber lasers operating near 980 nm have drawn much attention due to their potential usage as high brightness pump source for erdoped and ybdoped fiber devices 1. Our laser diode portfolio is broad, extending from cw laser diodes to pulsed laser diodes to high power laser diodes. Fiber laser welding cuts costs and improves results. Basics and features of highpower fiber laser kuniharu himeno1 the highpower fiber laser is superior to other highpower lasers with a gain medium of solid crystal or gas in all aspects such as beam quality, energy efficiency, space efficiency, stability and reliability, and is getting the major position in laser processing field. Basics and features of high power fiber laser kuniharu himeno1 the high power fiber laser is superior to other high power lasers with a gain medium of solid crystal or gas in all aspects such as beam quality, energy efficiency, space efficiency, stability and reliability, and is getting the major position in laser processing field. The design utilizes ges 1200v sic mosfets packaged in a 2u rack mountable, liquid cooled chassis. In this paper, the authors will present an allround study on this new kind of high power fiber amplifier. High power laser combiners lightels combiners are available with modified packaging to combine several solid state or fiber lasers into a multimode transmission fiber to achieve a laser power output in the range of several kilowatts to 10 kilowatts. The raman fiber laser adopted the dualwavelength bidirectional pumping configuration, utilizing 976 nm laser diodes and 1018 nm fiber lasers as the pump sources. The highpower marking laser is designed for demanding applications with high power requirements and short cycle times. The dynamic operating range of these devices is from 10% to full power with no change in beam divergence or beam profile throughout the entire range. A remote fiber laser welding system can weld more than twice as fast as either mig or resistance.
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