Menlo systems femtosecond yb fiberbased laser sources offer up to 10 w average power with pulse durations of high power femtosecond lasers efficient power scaling of ultrashortpulse lasers to kw range and more torsten mans, jan dolkemeyer and claus schnitzler the innoslab concept was developed at fraunhofer ilt more than 15 years ago using ndbased laser crystals. All fiberbased ybdoped high energy, high power femtosecond fiber lasers peng wan, lihmei yang, and jian liu polaronyx, inc. This project is supported in part by doe, afosr, and army sbir programs. A customdeveloped highpower laser based on a ybdoped amplifier is characterized as a transmitter for deepspace optical communications. Us8279901b2 high power femtosecond laser with adjustable. First of all, the gain spectra are analyzed for the pump wavelength at 910 nm and with different input pump. This paper is dedicated to the presentation of the performances of the single crystal fiber amplifier. The optilab eydfa36m erbium ytterbium doped fiber amplifier eydfa module is a highpower, versatile amplifier designed for catvpon networks, optical communication and other general. The development of high power, pulsed fiber laser systems and their applications the development of high power, pulsed fiber laser systems and their applications rareearth doped silica fibers have been. In recent times ytterbium yb doped fibrebased modelocked master oscillator and power amplifier have attracted a great deal of interest because of their inherent advantages like.
Menlo systems femtosecond yb fiberbased laser sources offer up to 10 w average power with pulse durations of eryb codoped fiber for highpower optical amplifiers by keiichi aiso. Impulsetmis a compact, robust, onebox source of femtosecond to picosecond pulses with the easeofoperation, stability and reliability you expect from a fiber source. The gain fiber is a doublecladding ybdoped fiber with a core diameter of 8. Apr 30, 2015 cross reference to related application. We report 5 ns pulses at 160 w average power and 910 repetition rate from a passively modelocked vecsel source seeding an ybdoped fibre power amplifier. High power femtosecond source based on passively modelocked. We both theoretically and experimentally investigate the optimization of femtosecond ybdoped fiber amplifiers ydfas to achieve highquality, highpower, compressed pulses. Bidirectional pumping scheme is chosen for the kw fiber amplifier. Oct 16, 2006 high power, high repetition rate picosecond and femtosecond sources based on yb doped fiber amplification of vecsels. Two all fiberbased laser systems are demonstrated to achieve high energy and high. We have experimentally demonstrated coherent combining in an yb doped double core fiber laser. The aerogainbase family consists of high performance ytterbium fiber gain modules designed for industrial manufacturers of ultrafast pulsed fiber lasers.
Erbiumdoped and ytterbiumdoped fiber amplifiers are the most important types. Amplification of femtosecond fiber and solid state oscillators at ghz repetition rate in fiber amplifiers has been limited to 5 w 14 and 20 w 15, respectively, to date. High power femtosecond laser with adjustable repetition rate. Doped fiber amplifiers for other wavelength ranges. Mar 11, 2020 ytterbium doped fibre femtosecond laser. With 20 w average output power, and a tunable repetition rate from 1 to 10 mhz, this fiber laser enables a wide range of applications, including multiphoton microscopy, photostimulated optogenetics, and precision machining. Development of eryb codoped fiber for highpower optical. However, highpower fiber devices are very often built as laser. Investigation of allinfiber yb doped femtosecond fiber. The software rp fiber power can be used for analyzing and optimizing fiber amplifiers. As a developer for optical frequency combs, all laser systems can be synchronized with high accuracy. The objective of this lesson is to demonstrate the performance of ytterbiumdoped fiber amplifiers.
Up to 96% of the total output power is combined into the fundamental mode of one of the two cores, with a. Pulse compression of a highpower thin disk laser using rodtype. The conceptually simplest option for generating highpower laser light is to build a fiber laser directly with some kind of mirrors on both ends. This patent document relates to femtosecond lasers including adjustable repetition rate high power femtosecond lasers. Femtosecond fiber lasers hit power highs laser focus world.
Its ytterbium yb doped orange femtosecond fiber lasers operate at 1040 and 520 nm, available with average power levels of up to 10w and providing 150 fs pulse duration. Highly efficient transmission gratings in fused silica are applied to recompress these pulses down to 80fs with an efficiency of 60%, resulting in a peak power of 1. In combination with normal dispersion and gain linearly. Due to the small transition cross sections, the saturation energy is fairly high, e. The ytterbium doped fiber amplifiers ydfa series utilize ytterbium ybdoped fiber technologies to achieve optical amplification in 1064 nmwavelength range. Dc fiber power amplifier, as well as synchronized pulse pick ing and pulsed. Highenergy femtosecond ybdoped dispersion compensation free fiber laser. Fewlayer bismuthene for femtosecond soliton molecules. The optilab eydfa36m erbium ytterbium doped fiber amplifier eydfa module is a high power, versatile amplifier designed for catvpon networks, optical communication and other generalpurpose optical amplification applications. Jan 12, 2018 a practical femtosecond polarizationmaintaining ybdoped fiber amplifier enabling 153 fs transformlimited pulse duration with 32. Thulium doped fiber amplifiers have been used in the sband 14501490 nm and praseodymium doped amplifiers in the 0 nm region. All fiberbased ybdoped high energy, high power femtosecond fiber.
Yb doped fiber is a very attractive medium for high power ultrashort pulse generation in 1 m spectral range. All fiberbased ybdoped high energy, high power femtosecond. High power fiber lasers and amplifiers swissphotonics. But, to successfully develope of highpower femtosecond. Tpef, oct, thz generation, microscopy, photopolymerization and amplifier seed oscillator. Our technical approach to a previous challenging program was to develop a compact, highpower, diodepumped, yb. The extremely high numerical aperture na for the pump coreinner cladding is possible, allowing efficient pumping with inexpensive high power broad area emitting pumps. To achieve femtosecond pulse duration from passively modelocked yb fiber oscillator. The software rp fiber power can be used for analyzing and optimizing. Direct amplification of high energy pulsed laser in fiber. Ytterbium doped all fiber integrated high power laser systems and their applications saniye sinem yilmaz m. This paper is dedicated to the presentation of the performances of the single. Diodepumped yb doped solidstate lasers implemented in mopa configuration clearly.
Packaged in an aerogain gain module, the high performance of our fibers is easily accessible for building picosecond or femtosecond ultrafast fiber lasers. Kolomenskii,1 james strohaber,1 ronald holzwarth,2,3 and hans. High power midinfrared frequency comb source based on a femtosecond er. In addition, ytterbium ybdoped fiber lasers provide very high slope efficiencies greater than. Highpower midinfrared frequency comb source based on a femtosecond er. The extremely high numerical aperture na for the pump coreinner. J pulse energy at 1 mhz repetition rate corresponding to a. Broadband light generation by femtosecond pulse amplification. Compact tunable 10 w picosecond source based on ybdoped. Fomin et al, 3 kw yb fibre lasers with a singlemode output, international.
A powerscalable approach for thz generation is demonstrated using optical rectification in gap pumped by a high power ultrafast ybdoped fiber amplifier operating at 1. Femtosecond ybdoped fiber laser system at 1 um of wavelength. Burstmode ybdoped fiber amplifier system optimized for low. Amplified pulses are dechirped to sub160fs duration in a grating compressor. J pulse energy at 1 mhz repetition rate corresponding to a peak power of 0. Compact tunable 10 w picosecond source based on yb. Dec 11, 2017 in this research, by adopting an alternative novel approach to ultrashort giant pulse generation which basically originated from difficulties with traditional employed methods, an optimized eryb codoped doubleclad fiber amplifier is applied to boost output average power of singlemode output pulses to a high level of 2w at 1.
The allfiberbased product are extremely reliable andrequires no routine maintenance. Two all fiberbased laser systems are demonstrated to achieve high energy and high average power femtosecond pulsed outputs at. However, to date, femtosecond lasers have been too large, bulky, delicate, and expensive to be considered as viable candidates for field use. Ytterbium doped double clad fibers our ytterbium doped double clad fibers offers the largest singlemode cores in the world enabling amplification to unprecedented power levels while keeping. The yfoa femtosecond fiber laser is designed for stable generation of an ultrashort laser pulse train. Recently, ytterbium yb doped crystals, and particularly fibers, have been used in a growing range of femtosecond amplifiers with quite different that is, complementary performance characteristics in terms of pulse energy and average power. The first amplifier setup consists of a ybdoped fiber amplifier. Highpower fiber lasers and amplifiers rp photonics. In recent times ytterbium yb doped fibrebased modelocked master oscillator and power amplifier have attracted a great deal of interest because of their inherent advantages like flexibility, reliability, compactness, high power handling capability and diffraction limited output beam quality as compared to the solidstate counterpart.
Recently, ytterbium yb doped crystals, and particularly fibers, have been used in a growing range of femtosecond amplifiers with quite different that is, complementary performance characteristics in. In the high energy laser system, a pulse energy of 1. Fiber output coupling andor harmonic generator are optional. A 120mhzrepetitionrate pulse train of singlecycle thz radiation with 6. High average power is achieved through chirpedpulse amplification in simple fiber. Ytterbiumdoped fibre femtosecond laser offers robust. The realization of such wattclass fiberoptic amplifiers development of eryb codoped fiber for highpower optical amplifiers by keiichi aiso, yoshio tashiro 2, tsuneo suzuki 3 and takeshi yagi the increasing capacity of wavelengthdivision multiplexing wdm transmission. Coherent combining in an yb doped double core fiber laser. Innoslab is a highly efficient amplification setup that allows for an extremely. First of all, the gain spectra are analyzed for the pump wavelength at 910 nm and with different input pump powers.
In the high energy laser system, a pulse energy of. Kolomenskii,1 james strohaber,1 ronald holzwarth,2,3 and hans a. As research, development, and deployment of fiber lasers continues to expand, the fiber lasers conference at photonics west has become the preeminent gathering in the field. Dec 02, 20 all fiberbased ybdoped high energy, high power femtosecond fiber lasers.
We report on the generation of linearly chirped parabolic pulses with 17w average power at 75 mhz repetition rate and diffractionlimited beam quality in a largemodearea ytterbiumdoped fiber. Double clad ytterbium fibers made with photonic crystal fiber technology are known as airclad fibers and provide a range of new benefits. Dupriez p, finot c, malinowski a, sahu jk, nilsson j, richardson dj, wilcox kg, foreman hd, tropper ac. This article gives an overview of the current state of both technologies and their applications. Femtosecond pulse generation and amplification in ybdoped. All fiberbased ybdoped high energy, high power femtosecond fiber lasers. Femtosecond fiber cpa system emitting 830 w average output power, opt. The system used in the simulation is shown in figure 1. The high power amplifier is constructed using 9m length of lowna largemodearea fiber with a 30m diameter, 0. Kgdwo 4 2 laser oscillator pumped by a high power fibercoupled diode laser module arkady major, richard cisek and virginijus barzda department of physics and institute for optical.
The pump light is guided within an allsilica structure, using a fluorinated secondary cladding to create the pump guide boundary, without the need for low index. Optimization of femtosecond ybdoped fiber amplifiers for. Ultrashort pulses amplified inside ydfas are modeled by the generalized nonlinear schrodinger equation coupled to the steadystate propagationrate equations. We report on the generation of linearly chirped parabolic pulses with 17w average power at 75 mhz repetition rate and diffractionlimited beam quality in a largemodearea ytterbium doped fiber amplifier. Two all fiberbased laser systems are demonstrated to achieve high energy and high average power femtosecond pulsed outputs at wavelength of 1 m. Osa all fiberbased ybdoped high energy, high power. The yb doped fiber oscillator fiber amplifier design combines the low noise performance of solidstate operation with high spatial mode quality of fiber lasers. We report 5 ns pulses at 160 w average power and 910 repetition rate from a passively modelocked vecsel source seeding an yb doped fibre power amplifier. The development of high power, pulsed fiber laser systems and. High power femtosecond laser with variable repetition rate. High power fiber lasers with gigahertz repetition rates are in demand for a number of. Comparison of different fiber amplifiers in ybdoped fiber.
We report on the generation of linearly chirped parabolic pulses with 17w average power at 75 mhz repetition rate and diffractionlimited beam quality in a largemodearea ytterbiumdoped fiber amplifier. Thorlabs yfi femtosecond ytterbium fiber laser is a high peak power, nir laser that emits clean, ultrafast pulses centered at 1035 nm. The large mode area for the singlemode signal facilitates high power levels while. Highpower midinfrared frequency comb source based on a. The device contains ybdoped active fiber, pump diodes, polarization control and dispersion control. In terms of gain saturation, fiber amplifiers are very different from semiconductor optical amplifiers soas.
In the high average power experiment, a large mode area lma fiber has been used in the final stage amplifier, seeded with a 50 w mode locked fiber laser. A practical femtosecond polarizationmaintaining ybdoped fiber amplifier enabling 153 fs transformlimited pulse duration with 32. All fiber lownoise highpower femtosecond ybfiber amplifier sys tem seeded by an. Unlike other cladding pump or dualclad fibers, fibercores dualclad erbiumytterbium doped fiber fcp1500y was originally designed as a highpower communications amplifier fiber. Highpower, high repetition rate picosecond and femtosecond. W average power is generated using 10 w from a parabolic fiber amplifier. Generation of 110 w infrared and 65 w green power from a 1. Highpower femtosecond ybdoped singlepolarization photonic. The conceptually simplest option for generating high power laser light is to build a fiber laser directly with some kind of mirrors on both ends. To achieve femtosecond pulse duration from passively modelocked yb fiber oscillator, dispersion compensator must be introduced in the cavity. Allfiber highpower monolithic femtosecond laser at 1. Commercially proven 915 nm pump lasersources ensure longterm reliability. At the same time, it also serves as an easy entry into high power scientific setups.
The backward pump type is used in the amplifier so as to get a high pump efficiency. We report an allfiber, highpower, lownoise amplifier system seeded by an allnormaldispersionmodelocked ybdoped fiber laser oscillator. The dualstage optical amplifier which enabled dense wave division multiplexing dwdm, was invented by stephen b. The active medium in the high power amplifier is an 8 mlong pm double cladding lma fiber with a core diameter of 30 m nufern plmaydf30400viii. However, high power fiber devices are very often built as laser amplifier combinations, i. After pulse compression, a pulse duration of 800 fs was measured. Our ytterbium doped double clad fibers offers the largest singlemode cores in the world enabling amplification to unprecedented power levels while keeping mode quality and stability. Rareearth doped modelocked fibre laser produces high power pulsed radiation by amplifying seed source radiation through a thin coiled fibre.
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