Pulse train uniformity and nonlinear dynamics of soliton crystals in mode-locked fiber ring lasers

Fandio, Défi Junior Jubgang; Dikandé, Alain M.

doi:10.1364/josab.34.002721

Cited by 7 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such growth is driven by an instability-induced dynamical transition of the cw laser propagating in nonlinear optical media. The instability-induced dynamical transition, so-called modulational instability [13][14][15][16][17][18][19], involves the cw instability and its breakup into a high-power laser field leading ultimately to a pulse via a regime dominated by pulse-train structures [20][21][22]. Hence operating lasers in micromachining processings requires a good understanding of its characteristic dynamics.…”

Section: Introductionmentioning

confidence: 99%

“…In nonlinear optical materials in particular the problem can be translated into the issue of laser self-starting dynamics [16][17][18][19], where it is assumed that the optical pump is a cw field whose amplitude can grow upon propagation until a critical amplitude. Beyond this amplitude the cw mode will become modulationally unstable, typically this instability will first generate weakly nonlinear pulse trains [20][21][22][23] which decay subsequently into high-intensity temporal pulses.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamics and stability of cw and pulse lasers in Kerr optical media with K-photon absorption

2020

View full text Add to dashboard Cite

The laser dynamics in inscription processes involving transparent media is carried out, by considering an optical field propagating in a transparent medium with Kerr nonlinearity. The study takes into account multi-photon absorption phenomena, as well as a possible modification of the material structure resulting in the generation of a plasma of nearly free electrons. The model is described by a complex Ginzburg–Landau equation governing the laser dynamics, in which an extra Kth-order nonlinear term is induced by K-photon absorption processes. The model also takes into consideration the electron plasma generation via a linear term in the optical field. A global stability analysis of the system dynamics reveals a rich variety of fixed points consisting of no, one or two singular points in the amplitude-frequency plane. The modulational instability of plane waves gives rise to period-halving bifurcations in the continuous-wave amplitude growth rate, reminiscent of dominant multi-pulse structures in the nonlinear regime at large multi-photon absorption rate K. Pulses and multi-pulses are observed in numerical simulations of the nonlinear equations for the full system dynamics, the first structures are clearly associated with the case K = 2 whereas multi-pulse structures of increasing amplitudes and shorter perioids are dominant at larger values of K.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamics and stability of cw and pulse lasers in Kerr optical media with K-photon absorption

2020

View full text Add to dashboard Cite

show abstract

“…Passively mode-locked lasers have been the subject of intensive research [1][2][3][4][5][6][7][8][9][10][11] because of their ability to produce pulses of very short durations (of the order of sub-picoseconds as well as femtoseconds). Fiber lasers with saturable absorbers in particular have attracted a great deal of attention; in the specific context of their standard setup where the gain medium is an optical fiber with weak nonlinearity, the propagation of the pump field is commonly described by the complex Ginzburg-Landau equation (CGLE) with cubic nonlinearity [1,6,12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Passively mode-locked fiber lasers can display a wealth of operation regimes, including continuous-wave (cw), soliton, period-doubling, multi-pulse, and chaotic [5,[8][9][10][11][24][25][26][27][28][29]. However, in most applications, there is a desire that the laser operate in the pulse regime.…”

Section: Introductionmentioning

confidence: 99%

Continuous-wave to pulse regimes for a family of passively mode-locked lasers with saturable nonlinearity

Dikandé

Titafan

Essimbi

2017

J. Opt.

View full text Add to dashboard Cite

The transition dynamics from continuous-wave to pulse regimes of operation for a generic model of passively mode-locked lasers with saturable absorbers, characterized by an active medium with non-Kerr nonlinearity, are investigated analytically and numerically. The system is described by a complex Ginzburg–Landau equation with a general m:n saturable nonlinearity (i.e , where I is the field intensity and m and n are two positive numbers), coupled to a two-level gain equation. An analysis of stability of continuous waves, following the modulational instability approach, provides a global picture of the self-starting dynamics in the system. The analysis reveals two distinct routes depending on values of the couple (m, n), and on the dispersion regime: in the normal dispersion regime, when m = 2 and n is arbitrary, the self-starting requires positive values of the fast saturable absorber and nonlinearity coefficients, but negative values of these two parameters for the family with m = 0. However, when the spectral filter is negative, the laser can self-start for certain values of the input field and the nonlinearity saturation coefficient Γ. The present work provides a general map for the self-starting mechanisms of rare-earth doped figure-eight fiber lasers, as well as Kerr-lens mode-locked solid-state lasers.

show abstract

Raman self-induced-transparency soliton trains in hollow-core photonic crystals

2017

View full text Add to dashboard Cite

Pulse train uniformity and nonlinear dynamics of soliton crystals in mode-locked fiber ring lasers

Cited by 7 publications

References 26 publications

Dynamics and stability of cw and pulse lasers in Kerr optical media with K-photon absorption

Dynamics and stability of cw and pulse lasers in Kerr optical media with K-photon absorption

Continuous-wave to pulse regimes for a family of passively mode-locked lasers with saturable nonlinearity

Raman self-induced-transparency soliton trains in hollow-core photonic crystals

Contact Info

Product

Resources

About