Initial conditions for dissipative solitons in a strict polarization-controlled passively mode-locked Er-Fiber laser

Santiago-Hernández, H.; Bracamontes-Rodríguez, Y. E.; Beltrán-Pérez, G.; Armas-Rivera, I.; Rodríguez-Morales, L. A.; Pottiez, O.; Ibarra-Escamilla, B.; Durán-Sánchez, M.; Hernández-Arriaga, M. V.; Kuzin, E. A.

doi:10.1364/oe.25.025036

Cited by 26 publications

(27 citation statements)

References 25 publications

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“…In the following the minimal transmission angle is referred to as 0° and the angle of maximal transmission is 100°. In our previously reported works used all-polarization control cavities [25][26][27]33] we experimentally found that the regimes of mode-locking operation depend on the polarization state in CW mode, before mode-locking is started. We will refer to this state as the initial polarization state.…”

Section: Resultsmentioning

confidence: 84%

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Sub-200-kHz single soliton generation in a long ring Er-fiber laser with strict polarization control by using twisted fiber

Rodríguez-Morales

Ibarra-Escamilla

Armas-Rivera

et al. 2020

Optics & Laser Technology

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In the present work we demonstrate a novel single-soliton ultra-low pulse repetition frequency passively modelocked erbium-doped fiber laser. We mitigate the residual linear birefringence of fiber by fiber twist to achieve a strict control of polarization. For mode-locking the nonlinear polarization rotation (NPR) was used. Special technique was applied to reduce the overdriving of NPR that allows the generation of single soliton in ultra-long cavity. The strict control of polarization yields a stable relation between the polarization state of the pulses propagating in the cavity and the regimes of generation. A 192.12-kHz train of soliton pulses was obtained with pulse duration of 4.7 ps at 1560.1 nm, the average power was 29 μW and the estimated peak power was ̴ 30.8 W with an energy of 150.9 pJ.

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Section: Resultsmentioning

confidence: 84%

“…These properties of the twisted fiber allow a strict control of the polarization state in the laser cavity. Recently, we demonstrated stable and predictable switching between different regimes of generation in a mode-locked fiber ring laser where fiber twist was used to cancel residual birefringence [25,26].…”

Section: Introductionmentioning

confidence: 99%

Sub-200-kHz single soliton generation in a long ring Er-fiber laser with strict polarization control by using twisted fiber

Rodríguez-Morales

Ibarra-Escamilla

Armas-Rivera

et al. 2020

Optics & Laser Technology

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“…Strict polarization control allows precise control of the switching characteristic, which in turn allows selecting the regime of operation and type of generated pulses, and also allows adjusting the pulse properties over a wide range through well-defined wave retarder adjustments [27,28]. In addition to figure-eight lasers, ring-cavity fiber lasers consisting of twisted fiber were also designed [29,30]. In this case, the mode-locking mechanism is provided by NPR taking place in the twisted fiber ring together with a polarizer inserted in the cavity.…”

Section: Introductionmentioning

confidence: 99%

“…Similar to figure-eight schemes, including a PI-NOLM, strict polarization control in ring cavities allows adjusting the bias, slope, switching power, and dynamic range of the switching characteristic. Such schemes made it possible to relate each setting of the polarization state (ellipticity and azimuth) to a specific mode of operation of the laser (polarization mapping) [29]. In one setup, precise polarization adjustments allowed selecting among as much as 10 different regimes, which encompass single-or dualwavelength operation, solitons, NLPs, or hybrid soliton-NLP emission, in a well-defined and repeatable way [30].…”

Section: Introductionmentioning

confidence: 99%

Complex dynamics of passively mode-locked fiber lasers with strict polarization control

Pottiez¹,

Bracamontes-Rodríguez²,

Lauterio-Cruz³

et al. 2021

Supl. Rev. Mex. Fis.

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In this work we browse an overview of the complex dynamics that arise in the non-stationary modes of operation of partly mode-locked fiber lasers under strict polarization control. Both ring and figure-eight cavities implementing saturable absorber mechanisms that rely on nonlinear polarization rotation were considered. The use of twisted fiber ensures robust operation, whereas precise polarization adjustments allow tailoring the nonlinear switching characteristic in a clear and repeatable manner. The enhanced flexibility of these sources allowed identifying and studying a broad spectrum of peculiar dynamics, in particular by implementing the temporal and spectral mapping techniques. These include the emergence, fusion, splitting, complex evolution and eventual decay of chaotic bunches of radiation, which are also subject to large spectral shifts, ample quasi-periodic instabilities, extreme-intensity events or the creation of solitons, among others, as well as the complex evolution of massively multiple soliton states. Finally, with the help of numerical simulation, several aspects of the physics underlying these puzzling behaviors could be elucidated.

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“…Recently, we demonstrated stable and predictable switching between different regimes of generation in a mode-locked fiber ring laser where fiber twist was used to cancel residual birefringence [21]. In the present work we propose and investigate a method to realize the cancellation of excessive NPR in a long mode-locked fiber ring laser.…”

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confidence: 98%

Long cavity ring fiber mode-locked laser with decreased net value of nonlinear polarization rotation

Rodríguez-Morales¹,

Armas-Rivera²,

Ibarra-Escamilla³

et al. 2019

Opt. Express

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We investigate a new configuration of a mode-locked fiber laser by using a nonlinear polarization rotation-based design to generate soliton pulses with low repetition rate. Unlike with previously reported configurations, we introduce a Faraday mirror after the first half of the cavity length to counteract the nonlinear polarization rotation effects. The total cavity length is 437 m including a 400-m long twisted SMF-28 fiber. The fiber was twisted to cancel the linear birefringence and to ensure that the polarization ellipticity is not altered as the pulse travels along the fiber. The strict control of polarization yields a stable relation between the polarization state of the pulses propagating in the cavity and the regimes of generation. Depending on the polarization state we observed three different emission regimes, the single soliton regime (SR), conventional noise-like pulses (NLP) and noise-like square-waveform pulse (NLSWP). In the SR, a 467.2 kHz train of solitons was obtained with pulse duration of 2.9 ps at 1558.7 nm. IntroductionUltrafast lasers have attracted significant interest due to their potential for applications like surgery [1], high-precision micromachining [2] and multiphoton microscopy (MPM) [3]. In the last case the fiber soliton sources can be especially useful because of their capacity of generating ultrashort pulses in the wavelength range from 1530 nm to 2000 nm using Er, Tm, Ho doped fibers and the effect of soliton self-frequency shift [4]. A high-repetition train of ultrashort pulses causes the effect of thermal accumulation [5,6] which can be beneficial in some cases, however it is undesirable for applications such as MPM. The repetition rate can be reduced by using pulse pickers such as Pockels cells or acousto-optic modulators, however this method is energetically inefficient and increases the complexity of the setup. Because the repetition rate of a mode-locked laser is inversely proportional to its resonator length, the repetition rate can be reduced simply by lengthening the cavity. In contrast to solid-state lasers, which require critical alignment, fiber lasers are more prone to achieve lower repetition rates with the convenience and simplicity of elongating a fiber cavity.The long cavity lasers were studied mainly with the purpose to increase the pulse energy in the configurations with net-normal dispersion. For example, Kobtsev et al. [7]

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Initial conditions for dissipative solitons in a strict polarization-controlled passively mode-locked Er-Fiber laser

Cited by 26 publications

References 25 publications

Sub-200-kHz single soliton generation in a long ring Er-fiber laser with strict polarization control by using twisted fiber

Sub-200-kHz single soliton generation in a long ring Er-fiber laser with strict polarization control by using twisted fiber

Complex dynamics of passively mode-locked fiber lasers with strict polarization control

Long cavity ring fiber mode-locked laser with decreased net value of nonlinear polarization rotation

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