Holmium fiber laser based on the heavily doped active fiber. The fiber gain medium allows for efficient pumping of the 900. Optics and lasers in engineering vol 47, issue 1, pages. Nonlinear frequency conversion in fiber lasers dtu orbit. Oct 29, 20 the pump laser protector also called pump protection filters is a passive component which allows maximum transmission from a discrete fibrecoupled pump laser diode and blocks parasitic signals around the centre wavelength of the laser from being reflected back into the laser.
Dk photonics blog is to introduce fiber optical passive. Compared to other types of highpower lasers, most co2 lasers have loworder transverse. Oem and user experience, though fiber and disk are and have been moving into this market. Passively modelocked fiber laser based on a hollowcore photonic crystal fiber filled with fewlayered graphene oxide solution zhibo liu,1,2 xiaoying he,1 and d. Fiber lasers are a subcategory of diode pumped solid state lasers which utilize a doped optical fiber core as their amplification medium. Rp photonics encyclopedia nonlinearities, nonlinear.
Lasers can be used for the generation of light with very high optical intensities. Process observation in fiber laser based selective laser melting. In addition, the required tubed laser beam delivery to the work piece is less. High performance 915980nm multimode diode lasers were developed as pumping sources in fiber coupled modules with 100um or 200um fiber core sizes 12. We compare concepts for providing 50 w in a 100 micron fiber at the optimum fiber laser pump wavelength of 976 nm. Co2 lasers are also used for selective laser sintering, one form of rapid prototyping.
To summarize, we have demonstrated the energy scaling of modelocked fiber lasers by use of a chirallycoupled core fiber. The hpflps uses ges digital controller technologies to compliment the sic devices, yielding high power density and reduced weight. Lumibird ytterbium fiber laser is manufactured for scientific applications as interferometry, quantum optics, metrology, atom trapping. Journal of the optical society of america b, 24, 1803 2007. Parameter optimization for high speed remote laser cutting. Raman fiber lasers rfls represent an important class of fiber lasers with all benefits of fiber design. The basic systems with 10 or 20 watt power provide a modulation range from 1 to 100 khz and fixed pulse. Yag lasers are certified to be fully compliant with all applicable standards and regulations as set forth by the united states of americas health and human services hhs, food and drug administration fda, center for devices and radiological health cdrh, title. File links to several internal databases make the fiberscan c3 program flexible and powerful. This cited by count includes citations to the following articles in scholar. In optical fiber technology, optical nonlinearities are of high interest. Random fiber laser operating at 1,115 nm springerlink.
Rare earth doping elements from the lanthanide family of the periodic table, such as ytterbium and erbium, are commonly used to dope the fiber core. Transmission of co2 laser radiation through glass hollow. Ytterbium fiber lasers are based on an mofpa design. Lasers in technology encyclopedia of life support systems.
Doctor of philosophy electrical engineering in the university of michigan. Pdf fanuc fiber laser series english chinese pdf file. Offering a wide spectrum of operating light wavelengths, durability of design and high wall. Based on a truly single mode dfb fiber laser architecture, they offer ultra stable performance free of modehops. High speed remote laser cutting of electrodes for lithiumion batteries. Pdf an allfiber laser generating cylindrical vector beam. Pigtailed distributed bragg reflector dbr singlefrequency. Fanuc fiber laser series are compact, highperformance and highlyreliable fiber. Obis continuous wave lasers, obis core ls compact laser, obis lxls fp fiberpigtailed, sapphire lasers, stingray and bioray.
Co2 lasers are also used for perforating, scribing, and micromachining. This fibercoupled 976nm diode laser from bwt, with a less than 1 nm linewidth at 180w of continues wave cw output from a 200micron core diameter pigtailed. Pumping fiber lasers is the driving force for the development of high brightness, mid power, passively cooled, fiber coupled diode lasers. The koheras basik single frequency fiber lasers are the absolute pinnacle of industrial low noise lasers featuring ultra low phase noise and hzrange linewidth normally only found in costly scientific systems. Osa coupling light from a laser diode into a multimode fiber. Energy scaling of modelocked fiber lasers with chirally. Ask rp photonics for advice on any kind of optical nonlinearities, or possibly tailored inhouse staff training e. High power fiber lasers and amplifiers swissphotonics. The ones marked may be different from the article in the profile. Practical aspects of fiber lasers, especially when handling high power 2. Feb 14, 2011 to summarize, we have demonstrated the energy scaling of modelocked fiber lasers by use of a chirallycoupled core fiber. Moreover, a companion cd with matlab files of programs to simulate these fibers would be very helpful. In blue sky research, we utilized patented microlens technology to facilitate the coupling for 405nm laser diode and got as high as more than 70% efficiency with superior stability.
These databases include a materials application system and a fixture database. Sheet metal cutting with fiber lasers swissphotonics. Stabilization of highenergy femtosecond ytterbium fiber lasers by use of a frequency filter. Materials processed by co2 lasers include metals, plastics, glass, quartz, fabrics, and others.
This article examines the conditions for the optimal propagation of high power beams through optical fibers. Parameter optimization for high speed remote laser cutting of electrodes for lithiumion batteries journal of laser applications 28, 022006 2016. Yag lasers are certified to be fully compliant with all applicable standards and regulations as set forth by the united states of americas health and human services hhs, food and drug administration fda, center for devices and radiological health cdrh, title 21 code of federal regulations. This demonstrates scaling of a fiber oscillator to large mode area in a format that directly holds the lowestorder mode and that is also compatible with standard fiber integration. Passively modelocked fiber laser based on a hollowcore. Laser diode based model emits red radiation with high wall plug efficiency, high wavelength and power stability and up to 10 mhz modulation frequency. Hybrid fiber lasers raise the bar for precision manufacturing. Silicon carbide sic based high power fiber laser power supply hpflps. Free post a pdf data sheet to our openindex product research engine.
One of the ways we help our community of laser scientists and engineers find the best products for their projects is by hosting a free openindex product database. This value equals to 11 jmm3 both for the fiber and 2 lasers. During the fiberlaser cutting, the minimal roughness is reached at the peclet number 0. Fiber amplifiers and fiber lasers based on stimulated. At high optical intensities, many nonlinearities can become relevant.
Introduction the basic principle of lasers and their characteristics can be found in optical sources and detectors. We present the latest results on the development of a high power fibre laser system for use in a linear collider laserwire experiment. The stable modes of operation of this laser that correspond to pulse trains with uniform amplitudes are fully classified. Wang1, 1department of electrical engineering, the hong kong polytechnic university, hung hom, kowloon, hong kong. The vertical laser structure was designed in such a way so that modeled equivalent spot size d is 1. The 47micromdiameter, 7mmlength fiber oscillator operated with. Feedbackinduced catastrophic optical mirror damage comd. At the fusion cutting of stainless steel, the minimal roughness is reached at the maximal cutting speed. Our fiber cutting lasers are made of active optical fiber and semiconductor laser diodes a combination of two of the most advanced laser technologies. Today broad area semiconductor lasers bals have found a wide range of industrial, medical, scientific, space and military applications including the pumping of solidstate, disk and fiber lasers 1.
Get started with any of our readytouse laser cutting design templates and customize it to fit your needs, whether its electronics enclosures, faceplates, or anything in between. Feedbackinduced catastrophic optical mirror damage comd on 976nm broad area single emitters with different ar reflectivity. A fiber laser is a laser in which the active gain medium is an optical fiber doped with rareearth. The reasons for the increase in take up of fiber and disk over co 2 lasers include the fact that they are smaller compact lasers, fiber delivery for integration ease, better. Iv lasers in technology lin li encyclopedia of life support systems eolss highpower lasers. Get tunable uv light from a robust fiber laser source with 270480 nm range and 280 w output power. The performance of a dissipativesoliton laser agree well with simulations that assume singlemode propagation, and scales correctly with mode area from equivalent smf lasers. Maintenance can be expensive, however, because of the limited lifetime of the gases involved with co2 lasers. Laser diode to fiber coupling analysis photon engineering. Development of a high power fibre laser for laser based. Laser ultrafox cables for the laser based highspeed networks of today and tomorrow, optical cable corporations laser ultrafox multimode. Experimental comparison of laser cutting of steel with. Yag laser welder lw5alw15alw25a amada miyachi america. This thesis describes work covering raman fiber lasers rfls and ampli fiers for.
The aircooled nanosecond fiber lasers are available in basic versions and advanced versions, each version representing a particular performance class. A parabolalike fiber end to couple the light from a highpower laser diode into a multimode fiber is presented. The laser setup was consist of an 8 meters of low concentration tmdoped fiber with core diameter of 20 mm and a pair of fiber bragg gratings. It is an ideal fibercoupled source for various kinds of application and accommodate wavelength from 375nm to 440nm. Thorlabs offers single mode and polarizationmaintaining fiber coupled laser sources that emit in the nir portion of the spectrum. The laser light is transferred via a passive fiber cable to the cutting head. We achieve about 270 mw lasing output in a 50 km standard communication optical fiber with slope efficiency more than 28 %. The formula for the coupling efficiency of such a system is given, and numerical evaluation shows that the theoretical coupling efficiency can be as high as 92% without an antireflection coating on the fibers end face. The differences between the diverging beam from a fiber and the beam at focus and on the fiber face are illustrated. Optimization of modelocked fiber lasers by intracavity dispersion compensation and repetition rate stabilization is described. In the world of diode lasers, there are currently four main configurations to obtain a singlefrequency output. This technology grants high productivity and efficiency with low maintenance requirements. The performance of a dissipativesoliton laser agree well with simulations that assume singlemode propagation, and scales.
Coherent or incoherent beam combination of fiber lasers enables further scaling of the. Yag fiber with polished and coated endfaces has been operated as a monolithic, guidedwave laser oscillator. As high power linearlypolarized fiber lasers with narrow linewidths are required for many applications, such as nonlinear frequency conversion and coherent beam combination, the demonstration of a powerful linearlypolarized narrowband random laser is significant. We experimentally demonstrate a random fiber laser operating at 1,115 nm using a ldpumped ybdoped fiber laser as the pump source. For micromachining, fiber lasers have been widely adopted for lessdemanding processes and materials that can utilize infrared wavelengths and longer pulse widths, while benefiting in some cases from fiber lasers. Process observation in fiber laser based selective laser melting ulrich thombansen, a, alexander gatej, b and milton pereira c a fraunhofer institute for laser technology ilt, process control and system technology, steinbachstrasse 15, d52074 aachen, germany b rwth aachen university, chair for technology of optical systems, steinbachstrasse 15, d52074 aachen, germany. Fiber laser in our fiber lasers the active gain medium is an optical fiber doped with ytterbium, no laser gases, mirrors or moving parts. Nonlinear dynamics of modelocking optical fiber ring lasers. Holmium fiber laser based on the heavily doped active.
Symposium on high power fiber lasers and their applications 2006. Experimental comparison of laser cutting of steel with fiber. This beamshaping system can be fabricated easily and has a. Wang1, 1department of electrical engineering, the hong kong polytechnic university, hung hom, kowloon, hong kong 2key laboratory of weak light nonlinear photonics, ministry of education, teda applied physics school. It is an ideal fiber coupled source for various kinds of application and accommodate wavelength from 375nm to 440nm. With an allnormaldispersion cavity design, chirped pulse energies above 40 nj are obtained with. These systems consist of multiple lowerpower fiber laser building blocks. Process observation in fiber laser based selective laser.
Reprint order form pdf cost confirmation and order form pdf fiber optics. Igor poberaj ljubljana, february 2011 abstract fiber lasers combine gain medium, resonator cavity and mirrors inside an optical fiber. The superk extenduv is a deepuv supercontinuum spectral extension unit for our superk extreme and compact supercontinuum lasers. This technology grants high productivity and efficiency. Laser ultrafox multimode cables are optimized for use with highspeed laser based systems, such as. Allfiber 7x1 signal combiner for incoherent laser beam. Wise, femtosecond ytterbium fiber laser with photonic crystal fiber for dispersion. Besides marking and labelling, they are excellently suited to perform a variety of cutting, drilling and structuring jobs. A wide variety of applications require tunable singlefrequency operation of a laser system. Each benchtop laser source features both a pigtailed fabryperot laser diode and current controller in a single unit. We are a community of more than 103,000 authors and editors from 3,291 institutions spanning 160 countries, including nobel prize winners and some of. Modelling of the fiber lasers since the models are generally simplified ones.
Simulation of laser diode to fiber coupling introduction this knowledge base article discusses how to use fred to accurately model the coupling from a ball. Fiber lasers, on the other hand, have become the dominant technology for macro processing and laser marking. An nd modelocked fiber laser is introduced as a way to obtain picosecond pulses in the near infrared 900 nm. We report a modelocked dissipative soliton laser based on largemodearea chirallycoupledcore ybdoped fiber. Beam quality effects by step and gradient index fibers of different lengths are considered. Physical methods, instruments and measurements vol. Improving fiber laser weld quality and yield with cleanweld coherent. Nonlinearities are optical phenomena involving a nonlinear response to a driving light field. Product information home optical cable corporation. Optics and lasers in engineering vol 47, issue 1, pages 1.
Figure 1 shows the architecture employed in previous multikw industrial fiber lasers. These systems also require management of the plasma cover or shield gas. Fiber coupling of 405nm laser diode with microlens technology. An allfiber laser generating cylindrical vector beam. Fiber laser, nanosecond, 1060nm, 1mj from spectra physics. Byvention fiber 2 kw 2007 munich presented on laser 2007 world of photonics, munich. Power scalability of a linearlypolarized narrowband. Fiber laser, nanosecond, 1060nm, 1mj from spectra physics, compare all brands on one site, unbiased selection guide on buy new and used fiber lasers, dpss. This thesis describes work covering raman fiber lasers rfls and. Thorlabs offers single mode and polarizationmaintaining fibercoupled laser sources that emit in the nir portion of the spectrum. Today most fiber laser cutting machines are today, most fiber laser cutting machines are used for thin sheets. Feedbackinduced catastrophic optical mirror damage comd on.
Lumibird uses its knowledge and highquality manufacturing process to produce a stable and reliable narrow linewidth fiber laser. Any user of this site is welcome to upload data sheets for products they use and recommend. The pump laser protector also called pump protection filters is a passive component which allows maximum transmission from a discrete fibrecoupled pump laser diode and blocks parasitic signals around the centre wavelength of the laser from being reflected back into the laser. We consider a model of a modelocked fiber ring laser for which the evolution of a propagating pulse in a birefringent optical fiber is periodically perturbed by rotation of the polarization state owing to the presence of a passive polarizer. Physicsreports54220143193 contents lists available atsciencedirect physicsreports journal homepage. While fiber lasers have been used in welding for over a decade, many endusers are still seeking to improve part quality, increase production throughput, and. The design utilizes ges 1200v sic mosfets packaged in a 2u rack mountable, liquid cooled chassis. These highpower diode lasers are the most efficient narrowband light sources and convert up to 73 percent of electrical energy into light 2.
233 350 173 283 774 1039 1266 431 380 1004 1491 1589 185 744 1213 425 479 286 1553 211 655 1465 1409 31 1073 789 709 1285 349 906 1150 1186 953 1219 1335 73 904