Approaching microjoule-level pulse energy with mode-locked femtosecond fiber lasers

Ortaç, Bülend; Baumgartl, Martin; Limpert, Jens; Tünnermann, Andreas

doi:10.1364/ol.34.001585

Cited by 123 publications

(86 citation statements)

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“…19, the parameters for each element match those of the experimental setup in [29], where the generation of microjoule-class pulses is demonstrated in a low nonlinearity large mode-area (LMA) photonic crystal-fiber (PCF) oscillator without dispersion compensation. Calculated pulse solutions show very good agreement with the experimental data [29]. Guided by the above results, we applied the chirped pulse concept to the LMA-PCF laser by incorporation of a positive dispersive element with negligible nonlinearity directly in front of the gain fiber, in order to achieve further energy and peak power scaling.…”

Section: Pulse Dynamics In the Chirped-pulse Fiber Oscillatormentioning

confidence: 95%

“…The increased mode area decreases the intensity of the light field, additionally the interaction length can be significantly reduced by reducing the fiber section in the cavity to the extreme case of solely a short piece of gain fiber. Exploiting the advantages of microstructured fibers together with high-energy dissipative soliton pulse shaping a tremendous performance increase in terms of pulse energy, peak power and also average power has been obtained [26][27][28][29].…”

Section: Pulse Dynamics In the Chirped-pulse Fiber Oscillatormentioning

confidence: 99%

“…The simulated oscillator scheme is shown in Fig. 19, the parameters for each element match those of the experimental setup in [29], where the generation of microjoule-class pulses is demonstrated in a low nonlinearity large mode-area (LMA) photonic crystal-fiber (PCF) oscillator without dispersion compensation. Calculated pulse solutions show very good agreement with the experimental data [29].…”

Section: Pulse Dynamics In the Chirped-pulse Fiber Oscillatormentioning

confidence: 99%

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Ultrashort pulse formation and evolution in mode-locked fiber lasers

et al. 2011

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Passive mode-locking in fiber lasers is investigated by numerical and experimental means. A nondistributed scalar model solving the nonlinear Schrödinger equation is implemented to study the starting behavior and intra-cavity dynamics numerically. Several operation regimes at positive net-cavity dispersion are experimentally accessed and studied in different environmentally stable, linear laser configurations. In particular, pulse formation and evolution in the chirped-pulse regime at highly positive cavity dispersion is discussed. Based on the experimental results a route to highly energetic pulse solutions is shown in numerical simulations.

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Section: Pulse Dynamics In the Chirped-pulse Fiber Oscillatormentioning

confidence: 95%

Section: Pulse Dynamics In the Chirped-pulse Fiber Oscillatormentioning

confidence: 99%

Section: Pulse Dynamics In the Chirped-pulse Fiber Oscillatormentioning

confidence: 99%

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Ultrashort pulse formation and evolution in mode-locked fiber lasers

et al. 2011

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“…Both SAM and NPE have little influence on the spectral width. The nonlinear phase, which is accumulated during one cavity round trip, is about 1 order of magnitude higher than in [9], where an even larger core fiber was used in a purely SAM-mode-locked regime. The use of such a fiber would allow for straightforward scaling of the presented performance by a factor of more than five to multimegawatt peak power.…”

mentioning

confidence: 88%

“…Such lasers support dissipative solitons [3] and could produce sub-100 fs pulses with energies as high as 30 nJ using standard single-mode fibers [4]. More recently, exceptional performances in terms of pulse energy and peak power have been demonstrated in mode-locked fiber lasers using large-mode-area (LMA) photonic crystal fibers [5][6][7][8][9]. However, these lasers operate at a low accumulated nonlinear phase and produce relatively long pulses >300 fs.…”

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confidence: 99%

Sub-80 fs dissipative soliton large-mode-area fiber laser

et al. 2010

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We report on high-energy ultrashort pulse generation from an all-normal-dispersion large-mode-area fiber laser by exploiting an efficient combination of nonlinear polarization evolution (NPE) and a semiconductor-based saturable absorber mode-locking mechanism. The watt-level laser directly emits chirped pulses with a duration of 1 ps and 163 nJ of pulse energy. These can be compressed to 77 fs, generating megawatt-level peak power. Intracavity dynamics are discussed by numerical simulation, and the intracavity pulse evolution reveals that NPE plays a key role in pulse shaping. © 2010 Optical Society of America OCIS codes: 060.2310, 060.2320 High-performance laser sources delivering ultrashort pulses with energies at the hundred nanojoule level or beyond will open up new directions for ultrafast scientific and industrial applications, ranging from highprecision laser structuring of various micro-/nanotargets to nonlinear optics. Rare-earth-doped fiber lasers present unique properties due to diffractionless propagation and the absence of thermo-optical problems. Because of the light confinement, fiber lasers offer a remarkable opportunity to develop highly stable laser sources, making them ideal candidates for real-world applications. The development of mode-locked fiber lasers operating in the normal dispersion regime to achieve higher pulse energies has been demonstrated [1,2]. Such lasers support dissipative solitons [3] and could produce sub-100 fs pulses with energies as high as 30 nJ using standard single-mode fibers [4]. More recently, exceptional performances in terms of pulse energy and peak power have been demonstrated in mode-locked fiber lasers using large-mode-area (LMA) photonic crystal fibers [5][6][7][8][9]. However, these lasers operate at a low accumulated nonlinear phase and produce relatively long pulses >300 fs. The generation of ultrashort pulses in a dissipativesoliton laser strongly relies on the amount of nonlinearity accumulated along the cavity, which should be enough to ensure sufficient spectral broadening. However, generation of ultrashort pulses with broad bandwidths in an allnormal-dispersion laser needs a strong pulse-shaping mechanism to prevent excessive temporal expansion. One solution is the use of a narrow spectral filter to achieve self-consistent evolution inside the laser cavity [4]. Indeed, spectral filtering of a chirped pulse produces a strong amplitude modulation in the time domain, which increases with spectral breathing. Recently, the generation of sub-150 fs pulses with 24 nm spectral width has been demonstrated in an Yb-doped LMA fiber laser using a saturable absorber mirror (SAM) [10].In this Letter we report the generation of sub-80 fs pulses from a passively mode-locked all-normaldispersion laser featuring an LMA photonic crystal fiber. By exploiting the combined action of an SAM and nonlinear polarization evolution (NPE) for pulse shaping, the laser directly generates 1 ps chirped pulses with pulse energies above 160 nJ at watt-level average power. These pulses...

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Soliton Fiber Lasers

2022

Solitons in Optical Fiber Systems

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Approaching microjoule-level pulse energy with mode-locked femtosecond fiber lasers

Cited by 123 publications

References 10 publications

Ultrashort pulse formation and evolution in mode-locked fiber lasers

Ultrashort pulse formation and evolution in mode-locked fiber lasers

Sub-80 fs dissipative soliton large-mode-area fiber laser

Soliton Fiber Lasers

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