Dissipative temporal solitons in a fast laser with a saturable absorber

Franco Prati; Massimo Brambilla; Lorenzo Columbo; Luigi A. Lugiato

doi:10.1117/12.3017140

20 June 2024 Dissipative temporal solitons in a fast laser with a saturable absorber

Franco Prati, Massimo Brambilla, Lorenzo Columbo, Luigi A. Lugiato

Proceedings Volume PC13004, Nonlinear Optics and its Applications 2024; PC130040Q (2024) https://doi.org/10.1117/12.3017140
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

So far, dissipative temporal solitons in a laser with a saturable absorber have been studied mainly in the context either of Haus's master equation or of the cubic-quintic complex Ginzburg-Landau equation. We present here a study based on an equation which includes saturation of the amplifier via a cubic approximation and saturation of the absorber at all orders. The equation describes well a system where both gain and absorption are fast, the laser is close to threshold, the unsaturated absorption is small, and the saturation intensity of the amplifier is much larger than that of the absorber. The model is appropriate for fast semiconductor lasers, such as quantum cascade lasers, since it encompasses the relevant phase-amplitude coupling via the linewidth enhancement factors of the gain and absorption media. Our study shows the crucial role played by these factors in the transition from cw emission to various types of pulsed emission, including dissipative temporal solitons.

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Citation Download Citation

Franco Prati, Massimo Brambilla, Lorenzo Columbo, and Luigi A. Lugiato "Dissipative temporal solitons in a fast laser with a saturable absorber", Proc. SPIE PC13004, Nonlinear Optics and its Applications 2024, PC130040Q (20 June 2024); https://doi.org/10.1117/12.3017140

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KEYWORDS

Quantum cascade lasers

Solitons

Light absorption

Mode locking

Optical bistability

Quantum enhancement

Quantum modeling

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