Normal dispersion erbium-doped fiber laser with pulse energies above 10 nJ

Ruehl, Axel; Kuhn, Vincent; Wandt, Dieter; Kracht, Dietmar

doi:10.1364/oe.16.003130

Cited by 45 publications

(22 citation statements)

References 13 publications

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“…For instance, the pulse energy generated with 980-nm laser diodes (LDs) [25] is three times lower than that reported with 1480-nm LDs in a similar scheme [26], 3.5 nJ and 10 nJ respectively.…”

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confidence: 84%

“…This combination of the pulse parameters represents the shortest duration and the high- est energy pulses generated so far in all-fiber Erbium oscillators, at least in publications containing necessary pulse characterisation (interferometric autocorrelation traces, radio-frequency (RF) beat signal etc.). Schemes with NPE mode-locking realized with bulk optics elements provide much better combination of the pulse parameters [24][25][26], specifically 10 nJ, 75 fs.…”

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confidence: 99%

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All-fiber highly chirped dissipative soliton generation in the telecom range

et al. 2017

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A high-energy (0.93 nJ) all-fiber Erbium femtosecond oscillator operating in the telecom spectral range is proposed and realized. The laser cavity built of commercially available fibers and components combines non-PM and PM parts providing stable generation of highly-chirped (chirp parameter 40) pulses compressed in an output piece of standard PM fiber to 165 fs. The results of numerical simulation agree well with experiment. The analyzed intracavity pulse dynamics enables the classification of the generated pulses as dissipative solitons. © http://dx.doi.org/10.1364/ao.XX.XXXXXX Recent progress in the development of high-power femtosecond fiber lasers operating around 1 µm, based on the highlychirped dissipative solitons (HCDS) generated in all-normal dispersion (ANDi) laser cavities [1][2][3] paved the way for the transfer and expansion of this technology into other spectral regions. The first natural candidate would be the telecom window (∼1.5 micron), where high power mode-locked fiber lasers have a wide range of practical applications, from CARS spectroscopy [4] to few-cycle pulse synthesis [5], terahertz-wave generation [6], frequency metrology [7,8] and, of course, telecommunications [9]. The advantage of this spectral interval is the availability of various low cost telecom components that might make such lasers commercially attractive.For the most of practical applications, long-term stability and reliability as well as output power, pulse duration and output beam quality are five important laser characteristics. From this point of view, all-fiber lasers have advantages due to their compactness, relative simplicity of the schemes, high efficiency and perfect beam quality. There is though one quite important weakness -a polarization state that is undefined in standard single-mode fibers (SMFs) leading to uncontrollable variation with the changing environment, especially in a long enough fiber cavity. Polarization maintaining (PM) fibers are widely used to mitigate this problem. As a result, 150 fs, 25 pJ pulses were demonstrated recently in an all-fiber all-PM Erbium laser with graphene saturable absorber (GSA) operated in the anomalous net dispersion regime [10]. Slightly higher energy (44 pJ) for 174 fs pulses was demonstrated previously in non-PM cavity with GSA [11]. Another type of saturable absorber, topological insulator (TI) was also successfully demonstrated in an all-fiber configuration resulting in 130-fs 45-pJ pulses [12].Further energy up-scaling became possible by realizing the HCDS in the normal net dispersion regime, one of the most advanced ways to generate high-energy femtosecond pulses in mode-locked oscillators demonstrated so far, see review [13]. We have studied the HCDS regime earlier [14], showing an essential result used in the current publication, namely that the numerical simulations and analytical solution in the high chirp limit ( f 1) agree well at f > 10. The HCDS regime was experimentally demonstrated for the first time in Ytterbium [15] and Erbium fiber oscillators [16...

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confidence: 99%

All-fiber highly chirped dissipative soliton generation in the telecom range

et al. 2017

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“…Note, that 1480 nm-pump is likely to give some additional benefits in comparison with 980 nm-pump. For instance, the energy of pulses generated with 980 nm-pump is three times lower [17] than that obtained in a similar scheme with 1480 nm-pump (3.5 nJ against 10 nJ) [18].…”

Section: Introductionmentioning

confidence: 67%

Generation of highly-chirped dissipative solitons in Er-doped all-fiber oscillator

Zhdanov

Kharenko

Podivilov

et al. 2017

2017 Progress in Electromagnetics Research Symposium - Spring (PIERS)

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Abstract-The all-fiber highly-chirped dissipative soliton (HCDS) oscillator was realised at 1.5 μm wavelength. A normal net cavity dispersion was achieved by using a conventional dispersion compensating fiber (DCF). To separate effects of the amplitude self-modulation and dissipative soliton formation, we exploit in the laser cavity both standard single mode fiber and polarization maintaining single mode fiber. The properties of the generated pulses have been varied by changing spectral filter bandwidth and DCF lengths. After compression of the nJ-level ∼6 ps HCDS in the external fiber compressor, we measured the output pulse duration of 165 fs (an estimated chirp parameter 40).

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“…In 2007, Chong et al demonstrated Yb-doped fiber lasers with pulse energies above 20 nJ, and dechirped pulse peak powers of nearly 100 kW [18]. In 2008, Ruehl et al reported an erbium-doped fiber oscillator mode-locked by nonlinear polarization evolution operating in the large normal dispersion regime, and producing highly chirped, ultrashort 10 nJ pulses with dechirped peak powers of 140 kW [19].…”

Section: Introductionmentioning

confidence: 99%

Optimal design of higher energy dissipative-soliton fiber lasers

Zhang

et al. 2015

Optics Communications

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Normal dispersion erbium-doped fiber laser with pulse energies above 10 nJ

Cited by 45 publications

References 13 publications

All-fiber highly chirped dissipative soliton generation in the telecom range

All-fiber highly chirped dissipative soliton generation in the telecom range

Generation of highly-chirped dissipative solitons in Er-doped all-fiber oscillator

Optimal design of higher energy dissipative-soliton fiber lasers

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