High average power picosecond yb doped fiber amplifier software

Mw peak power er yb doped fiber femtosecond laser amplifier at 1. Schematic setup of the high average power picosecond, thulium. The software rp fiber power can be used for analyzing and optimizing many kinds of fiber. Subpicosecond pulse amplification in a short length, highly doped erbiumytterbium phosphate fiber amplifier. A flattop spatial profile was measured with neardiffractionlimited beam divergence. We developed a high power, picosecond green source at 532 nm through use of singlepass frequencydoubling of our 1064nm fiber laser in lithium triborate lbo. The beam quality of highpower laser diodes is usually quite poor insufficient for efficient launching into a singlemode core. Stable, highpower, ybfiberbased, picosecond ultraviolet.

Alternatively to the application of high power laser oscillators, amplifiers can be used to. The paper presents gain characteristic of ytterbium doped fiber amplifier in terms of amplifier length, yb ion density, pump power and signal power at pump wavelength. The device contains yb doped active fiber, pump diodes, polarization control and dispersion control elements, electronic power supply and control system. A megawattpeak power picosecond all fiber based laser in master oscillator power amplifier mopa is experimentally demonstrated. Phase noise suppression for a high power optical frequency comb jian zhao, wenxue li, dongbi bai et al. The edfa amplification region varies from application to application and can be. Higher pulse energies well above 1 nj in picosecond pulses have been. Ytterbium doping provides high capacity for producing large gain per unit length, and versatility in pump optimization for a given gain length. Megawattpeakpower picosecond allfiberbased laser in mopa.

Osa highaveragepower picosecond ybdoped fiber amplifier. Highefficiency wattlevel 1014nm singlefrequency laser. Highenergy, khz, picosecond hybrid ybdoped chirpedpulse. Low repetition rate broadband high energy and peak power nanosecond pulsed yb doped fiber amplifier. Yb doped tapered fiber amplifier delivering picosecond pulses with both high peak power 550 kw and high average power 44 w is presented. J pulses at 200 khz resulting in 24 w of average power. Large mode area photonic crystal fibers nkt photonics. The concept of spectral compression induced by self phase modulation is used to generate transformlimited 10ps pulses in a rareearth doped low nonlinearity fibre amplifier. The pulses generated by a gainswitched diode were compressed by a chirped fiber bragg grating and amplified without any distortion with excellent spectral quality. Rp photonics encyclopedia tutorial fiber amplifiers, part.

Direct amplification of high energy pulsed laser in fiber. The objective of this lesson is to demonstrate the performance of ytterbiumdoped fiber amplifiers. At 1064nm, inside the emission spectra of ytterbium, there. Soft glasses for photonic crystal fibers and microstructured optical. High power all fiber polarization maintaining picosecond pulsed laser amplifier. Single and shot data suggest slight laser conditioning of the preforms and rule out laser fatigue in the doped cores and surrounding fused silica. The system used in the simulation is shown in figure 1. Here, we present the approach of combining a gainswitched laser diode 6 with an ytterbium doped fiber amplifier ydfa 7 for the generation of high energetic picosecond pulses. Large mode area photonic crystal fibers the selection of crystal fibre large mode area fibers covers a range of fibers for diffraction limited high power delivery. High power 1030 nm ybdoped picosecond all fiber laser.

Wavelengthtunable, picosecond fiber masteroscillator power. The key requirements are high peak power at moderate data. A high power 1030 nm passively modelocked ytterbiumdoped picosecond fiber laser by master oscillator power amplifier mopa in allfiber configuration is demonstrated. Apr 20, 2015 we report on a diodepumped, hybrid yb doped chirpedpulse amplification cpa laser system with a compact pulse stretcher and compressor, consisting of yb doped fiber preamplifiers, a roomtemperature yb. High efficiency wattlevel 1014 nm singlefrequency laser based on short yb doped phosphate fiber amplifiers to cite this article. Fiber amplifiers have potential in highpower picosecond laser amplification, and by using the fiber master oscillator power amplifier mopa system, some highpower picosecond mopa systems are demonstrated. A customdeveloped high power laser based on a yb doped amplifier is characterized as a transmitter for deepspace optical communications. Fiberpumped highpower midir laser produces picosecond. Using a 15mm long lbo crystal, we have generated 30 w of average power in the second harmonic with 73w of fundamental average power, for a conversion efficiency of 41%. Such design architecture ensures greater stability and true turnkey operation with no maintenance as well as the highest possible output pulse energy and spatial beam quality.

Multi stage ytterbium fiber amplifier seeded by a gain. Recently, a fiber based femtosecond green source was also demonstrated 6. To our knowledge, the first time to investigate the generation of tunable high power picosecond laser based on yb doped fiber amplification of gain switch semiconductor laser diode was reported by hongjun liu 16. We demonstrate a pulsed ytterbium doped fiber masteroscillator power amplifier source at 1060 nm producing over 300 w of average power in 20 ps pulses at 1 ghz repetition rate. A further increase of the output power was only limited by the available laserdiode pump power. At the same time, a critical factor in the attainment of the highest nonlinear conversion efficiency and output. We demonstrate a highpower, picosecond, thuliumdoped, allfiber master. The most common example is the erbium doped fiber amplifier edfa, where the core of a silica fiber is doped with trivalent erbium ions and can be efficiently pumped with a laser at or near a wavelength of 980 nm or 1480 nm, and exhibits gain in the 1550 nm region. Limpert j, liem a, gabler t, zellmer h, tunnermann a, unger s, jetschke s, muller hr.

Amplification of picosecond pulses generated in a carbon. Progress in shortpulse ybdoped fiber oscillators and amplifiers. Burstmode ybdoped fiber amplifier system optimized for low. The yfoa femtosecond fiber laser is designed for stable generation of an ultrashort laser pulse train. Strictly allfiber picosecond ytterbium fiber laser utilizing. A high power all fiber yb doped picosecond fiber laser is achieved via a fourstage master oscillator power amplifier mopa configuration. Femtosecond erdoped fiber laser based on dividedpulse. This compact amplifier is ideal for pumping of opcpa.

Rp photonics encyclopedia tutorial fiber amplifiers. In this system, a seed that utilizes first relaxation peaks is applied which makes the pulse shape of which. Highaveragepower picosecond ybdoped fiber amplifier. The beam quality of high power laser diodes is usually quite poor insufficient for efficient launching into a singlemode core. Nov 26, 2014 in this chapter, we first considered practical aspects in design and construction of relatively high average power picosecond yb doped fiber laser systems. Progress in cherenkov femtosecond fiber lasers xiaomin liu, ask s svane, jesper l. Highpower diodepumped short pulse lasers based on yb.

Yb doped continuous wave lasers practically can reach several kilowatt levels, yet the output power of yb doped picosecond and sub. Highenergy sources are often based on chirpedpulse amplification cpa4, in. Highenergy fewcycle ybdoped fiber amplifier source based on a single. High average power, high repetition rate, picosecond pulsed. A compact tunable high power picosecond green laser pulse source based on frequency doubling of an yb doped fiber amplifier seeded by a gain switch laser diode has been developed. Ytterbium yb doped fiber amplifiers and fiber lasers that use solidstate lasers or gainswitched laser diodes as seed lasers in a masteroscillator power amplifier mopa configuration can produce picosecond and femtosecond pulses at high average power for materialsprocessing applications. Evolution of output power and gain when an ybdoped fiber laser is switched on. We report the performance of a picosecond masteroscillator power amplifier mopa system based on a diodepumped solidstate dpss seed laser and yb doped fiber amplifier. A highpower midinfrared midir fiber laser developed at zhejiang university hangzhou, china and based on quasisynchronously pumping periodically poled magnesiumoxide doped lithium niobate ppmgln achieves an average output power of 4 w at a 3. The very large mode area enables high power levels without nonlinear effects or material damage. This diagram has been made with the rp fiber power software. Abstract we report the high peak power picosecond hybrid fiber and solid. Numerical simulations of the fiber oscillator design based on the modified nonlinear schrodinger equation nlse, agree well with the experimental results.

Low repetition rate broadband high energy and peak power. Subpicosecond pulse amplification in a short length, highly. Nonlinear ultrafast fiber amplifiers beyond the gainnarrowing. Pdf highenergy fewcycle ybdoped fiber amplifier source based. The fiber amplifier generates the picosecond infrared pulses with average power of 10. We report on a claddingpumped, ytterbium doped largecorearea fiber amplifier that is capable of generating 51.

Dec 01, 2001 highaveragepower picosecond ybdoped fiber amplifier. The other end of the thulium doped fiber is spliced to a fcapc connectorized smf28 pigtail which is part of the single walled carbon nanotube. This laser, which utilized a cpa mopa laser scheme, consisted of master oscillator, regenerative amplifier, and stretchercompressor module. Generation of 33 fs 935 w average power pulses from a thirdorder dispersion managed. The fiber shows blueshifted emission spectrum compared to yb doped aluminosilicate fiber, and is considered favorable for the short wavelength yb doped fiber laser. Progress in shortpulse ybdoped fiber oscillators and. In an ytterbium doped largemodearea fiber these pulses could be amplified up to 43. The seed source is a passively modelocked fiber laser.

Frequency domain optical parametric amplification, nat. Optical amplifiers and their applications, oaa 2006. Highefficiency fiber laser at 1018 nm using ybdoped. This letter reports on a fiber laser system that, employing a 1 m long rodtype photoniccrystal fiber as its main amplifier, emits a record average output power of 2 kw, by amplifying stretched pspulses.

A high efficiency fiber laser at 1018 nm using homemade yb doped phosphosilicate fiber is demonstrated. The use of this regenerative amplifier enabled to create compact, high average power, high brightness, diodepumped femtosecond yb. Highly stable, 54mj ybinnoslab laser platform at 0. J with pulse duration of 124 ps by using a fourstage fiber mopa. The gain performance of ytterbium doped fiber amplifier. High power, picosecond green laser based on a frequency. Modelocked fiber lasers can also be based on ytterbiumdoped fiber for. High average power, low nonlinearity ytterbium fiber. Do you want to read the rest of this conference paper. We report on a claddingpumped, ytterbiumdoped largecorearea fiber amplifier that is capable of generating 51. Ybdoped tapered fiber amplifier delivering picosecond pulses with both high peak power 550 kw and high average power 44 w is presented. Compact tunable 10 w picosecond source based on ybdoped.

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. With a 3300 m2 mode field area and high pump absorption, the aerogainrod module offers up to ten times the performance of our aerogainflex and base models. Pingxue lis 35 research works with 195 citations and 599 reads, including. Fiber amplifiers based on singlemode fibers are quite limited in output power, since it is hard to inject a high pump power into such a fiber. J pulse energy at 1 mhz repetition rate corresponding to a peak power of 0. This chapter describes recent progress of high average power, picosecond thindisc laser from the research and development of the hilase project during 20122015. Oct 15, 2018 we report the generation of high average output power, high peak power and high pulse energy radially polarized picosecond pulses from a compact gainswitched laserdiodeseeded yb doped fiber ydf master oscillator power amplifier mopa system. First of all, the gain spectra are analyzed for the pump wavelength at 910 nm and with different input pump powers. 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. Jan 12, 2018 a practical femtosecond polarizationmaintaining ybdoped fiber amplifier enabling 153 fs transformlimited pulse duration with 32. One can see the relaxation oscillations, with convergence towards the steady state. High average power laser sources with picosecond pulse durations in the 1. Yb doped thin disk lasers with average output powers up to several 10 watts is reported 3,4. Highbrightness solidstate lasers for compact short.