Nonlinear polarization evolution of ultrashort pulses in polarization maintaining fibers

Szczepanek, Jan; Kardaś, Tomasz M.; Radzewicz, Czesław; Stepanenko, Yuriy

doi:10.1364/oe.26.013590

Cited by 61 publications

(15 citation statements)

References 44 publications

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“…The most frequently used artificial SAs are: nonlinear optical/amplifying loop mirrors (NOLM [10], [11] Stepanenko (stepanenko@ichf.edu.pl). [12], [13]), Mamyshev oscillators [14], [15], and cross-splicing nonlinear polarization evolution (NPE) [16].…”

Section: Introductionmentioning

confidence: 99%

All-polarization-maintaining Yb-doped fiber oscillator with a hybrid ring-linear cavity of net anomalous dispersion

Pielach¹,

Jamrozik²,

Krupa³

et al. 2023

Fiber Lasers XX: Technology and Systems

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Chirped fiber Bragg gratings opened up a way towards investigating dispersion-managed dissipative soliton regime in all-fiber cavities at the wavelength of 1 µm. It has been shown that dispersion management can decrease the chirped pulse duration compared to all-normal-dispersion oscillators. Recent works also prove that operation near-zero net cavity dispersion can reduce the relative intensity noise. Building such systems using only polarization-maintaining optical fibers is of great interest because of their robustness in extreme environmental conditions resulting in various applications outside research laboratories. This work presents an ultrafast Ybdoped fiber laser oscillator made entirely of polarization-maintaining optical fibers and fiberized components. Unlike in typical ring cavities, the ultrashort pulse passes through the rare-earth-doped fiber twice per cavity roundtrip. The system operates in a Raman-free dispersion-managed dissipative soliton regime at the central wavelength of 1031 nm. The negative dispersion is introduced to the cavity via a chirped fiber Bragg grating. At net cavity dispersion of –0.037 ps2, the setup delivers stable 3 nJ pulses at a repetition rate of 23.781 MHz. The oscillator, passively mode-locked with a nonlinear optical loop mirror, generates positively chirped 8.2 ps pulses, which can be compressed down to 125 fs with a temporal Strehl ratio of 0.77.

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Section: Introductionmentioning

confidence: 99%

All-polarization-maintaining Yb-doped fiber oscillator with a hybrid ring-linear cavity of net anomalous dispersion

Pielach¹,

Jamrozik²,

Krupa³

et al. 2023

Fiber Lasers XX: Technology and Systems

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“…The use of PM fibers can significantly increase the robustness against environmental perturbations. Using cross-splicing technology, mode-locking based on NPE has been successfully demonstrated in all-PM-fiber cavities [5], [6], [7]. However, the output pulse energy is relatively low.…”

Section: Introductionmentioning

confidence: 99%

27nJ, 114fs Pulses From an Environmentally Stable All-Normal All-PM Yb-Doped Fiber Laser Mode-Locked With a Nonlinear Amplifying Loop Mirror

2022

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We report on a self-starting mode-locked allpolarization-maintaining fiber laser using a nonlinear amplifying loop mirror. It delivers a 7.81MHz train of pulses with an average power of 213mW, corresponding to pulse energy higher than 27nJ. The output chirped pulses can be recompressed down to ~114fs with a grating pair compressor. The nonlinear phase shifts accumulated in the long fiber cavity can be used to compensate for the mismatched third order dispersion and increase the compressed pulse quality. The laser shows excellent stability and environmental robustness during the test.

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“…In mode-locking schemes which are based on the polarization mode dispersion, polarization controllers in the cavity induce birefringence, followed by a polarizer [3,4]. When a pulse with high power levels is traveling in the fiber, it changes the birefringence of the fiber via the Kerr effect leading to a higher transmission through the polarizer [13][14][15][16][17]. While this method requires to adjust the polarization controller once in a while, it is highly robust and gives a consistent output pulse shape and spectrum [3,4].…”

Section: Introductionmentioning

confidence: 99%

Polarization dynamics of ultrafast solitons

Klein,

Meir,

Duadi

et al. 2021

Preprint

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We study the polarization dynamics of ultrafast solitons in mode-locked fiber lasers. We find that when a stable soliton is generated, it's state-of-polarization shifts toward a stable state and when the soliton is generated with excess power levels it experiences relaxation oscillations in its intensity and timing. On the other hand, when a soliton is generated in an unstable state-of-polarization, it either decays in intensity until it disappears, or its temporal width decreases until it explodes into several solitons and then it disappears. We also found that when two solitons are simultaneously generated close to each other, they attract each other until they collide and merge into a single soliton. Although, these two solitons are generated with different states-of-polarization, they shift their state-of-polarization closer to each other until the polarization coincides when they collide. We support our findings by numerical calculations of a non-Lagrangian approach by simulating the Ginzburg-Landau equation governing the dynamics of solitons in a laser cavity. Our model also predicts the relaxation oscillations of stable solitons and the two types of unstable solitons observed in the experimental measurements.

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Nonlinear polarization evolution of ultrashort pulses in polarization maintaining fibers

Cited by 61 publications

References 44 publications

All-polarization-maintaining Yb-doped fiber oscillator with a hybrid ring-linear cavity of net anomalous dispersion

All-polarization-maintaining Yb-doped fiber oscillator with a hybrid ring-linear cavity of net anomalous dispersion

27nJ, 114fs Pulses From an Environmentally Stable All-Normal All-PM Yb-Doped Fiber Laser Mode-Locked With a Nonlinear Amplifying Loop Mirror

Polarization dynamics of ultrafast solitons

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