Theory of passively mode-locked photonic crystal semiconductor lasers

Heuck, Mikkel; Blaaberg, Søren; Mørk, Jesper

doi:10.1364/oe.18.018003

Cited by 33 publications

(19 citation statements)

References 20 publications

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“…The insets show the temporal variation of the laser output power at the indicated points in the phase space. The laser output is categorised using a combination of the signal variance and the number and nature of the peaks observed (increasing, decreasing, constant) in order to correctly identify the type of laser operation, similar to the method used in [28]. Finally, the dashed black line indicates the borders of self-pulsing predicted by a stability analysis of the dynamical equations, showing very good agreement with the dynamical simulations.…”

Section: Modes Of Laser Operationmentioning

confidence: 82%

“…Future work should clarify the role of spontaneous emission noise on the laser performance, including intensity noise and timing jitter of the pulses. It is also of interest to explore structures for realizing mode‐locked operation . In general, several of the laser geometries that are found to be of interest for realizing specific dynamical laser properties could be reconsidered using the option of incorporating a Fano resonance.…”

Section: Conclusion and Scopementioning

confidence: 99%

“…It is also of interest to explore structures for realizing mode-locked operation. [28] In general, several of the laser geometries that are found to be of interest for realizing specific dynamical laser properties [6,34] could be reconsidered using the option of incorporating a Fano resonance.…”

Section: Conclusion and Scopementioning

confidence: 99%

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Theory of Self‐pulsing in Photonic Crystal Fano Lasers

Rasmussen

Mørk

2017

Laser & Photonics Reviews

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Laser self‐pulsing was a phenomenon exclusive to macroscopic lasers until recently, where self‐starting laser pulsation in a microscopic photonic crystal Fano laser was reported. In this paper a theoretical model is developed to describe the Fano laser, including descriptions of the highly‐dispersive Fano mirror, the laser frequency and the threshold gain. The model is based upon a combination of conventional laser rate equations and coupled‐mode theory. The dynamical model is used to demonstrate how the laser has two regimes of operation, continuous‐wave output and self‐pulsing, and these regimes are characterised using phase diagrams, establishing the regime of self‐pulsing numerically. Furthermore, the physics behind the self‐pulsing mechanism are explained in detail and it is demonstrated how cavity absorption makes the Fano mirror function as a saturable absorber, leading to Q‐switched pulse generation. A stability analysis is used to demonstrate how the dominant mechanism of instability is relaxation oscillations becoming un‐damped. Finally the effect of varying key self‐pulsing parameters is investigated by characterisation of the change in self‐pulsing regions.

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Section: Modes Of Laser Operationmentioning

confidence: 82%

Section: Conclusion and Scopementioning

confidence: 99%

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Theory of Self‐pulsing in Photonic Crystal Fano Lasers

Rasmussen

Mørk

2017

Laser & Photonics Reviews

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“…Approaching the band edge, the group refractive index increases and slow-light propagation effects prevail, with a number of possible applications, e.g., for tunable delays [1,2], enhanced light-matter interaction, optical switching [3], nonlinear optics [4,5], and mode-locked lasers [6]. It has been reported that both material loss and material gain in the PhCWs restrict the attainable group index and degrade slowlight effects [7,8].…”

Section: Introductionmentioning

confidence: 99%

Systematic design of loss-engineered slow-light waveguides

2012

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This paper employs topology optimization to systematically design free-topology loss-engineered slow-light waveguides with enlarged group index bandwidth product (GBP). The propagation losses of guided modes are evaluated by the imaginary part of eigenvalues in complex band structure calculations, where the scattering losses due to manufacturing imperfections are represented by an edge-related effective dissipation. The loss engineering of slow-light waveguides is realized by minimizing the propagation losses of design modes. Numerical examples illustrate that the propagation losses of free-topology dispersion-engineered waveguides can be significantly suppressed by loss engineering. Comparisons between fixed-and free-topology loss-engineered waveguides demonstrate that the GBP can be enhanced significantly by the free-topology loss-engineered waveguides with a small increase of the propagation losses.

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“…This framework could be used to investigate the impact of dispersion on the dynamics of a broad (8)- (9), (7) for ΔðtÞ ¼ Δ 0 sin ρt at the turning point of the filter transmission sin ρt ¼ −1 (top) in case of (a) normal dispersion Ω ¼ 13 (modulation frequency ρ ¼ 10 class of systems commonly described by DDEs. For example, this approach could be used to understand the effect of linear chromatic dispersion on the characteristics of the mode-locked regime in monolithic multisection lasers and other nonlinear photonic devices [6,7,10,[21][22][23][24][25][26]. In particular, taking chromatic dispersion into consideration is unavoidable when modeling soliton mode-locked lasers frequently used for generation of femtosecond pulses [27], photonic crystal mode-locked lasers [25], as well as many other fiber, solid state, and semiconductor [28] optical systems.…”

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confidence: 99%