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October 2022 - present
Centre de nanosciences et de nanotechnologies (C2N)
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- PostDoc Position
Publications
Publications (17)
We propose and demonstrate a technique based on self-injection locking to significantly enhance the performance of a quantum-dash comb laser, implemented via a hybrid architecture that combines fiber-based and free-space elements. Packaged in a standard butterfly module, the laser was thoroughly examined in both free-running and hybrid optical feed...
We demonstrate the significant impact of resonant feedback on the long-term stability, phase noise, and optical linewidth of a single-packaged quantum-dash comb laser using a hybrid feedback architecture, aiming to enhance performance for LiDAR systems.
We demonstrate self-pulsing in a single-section III-V-on-Silicon DFB laser, with a tunable pulsation frequency from 7 GHz to 2.38 GHz. Further investigation into the self-pulsation mechanism under controlled optical injection.
We experimentally demonstrate quantum-dash laser performance improvement by injecting optical noise and coherent feedback. The results show the amplification of the side mode lines while preserving the mode-locking and drastically reducing the individual comb linewidth.
We experimentally identified different optical coherent feedback sub-regimes of a quantum-dash mode-locked laser as a function of the feedback strength. The results render the laser a versatile source.
According to the new condition of the pump peak power, we report a developed approach to achieve time-frequency mapping (TFM) in the spectral Fraunhofer regime by a single all-optical time lens using parabolic cross-phase modulation (XPM). The condition is obtained by combining the far-field spectral Fraunhofer regime with the ability of parabolic...
Nous avons étudié expérimentalement les performances de lasers à verrouillage de modes à base de bâtonnets quantiques soumis à différents régimes de rétroaction optique cohérente et incohérente. Les effets de la rétroaction optique pour des régimes spécifiques permettent de faire évoluer les caractéristiques de cette source et réaliser un peigne de...
We propose a programmable XPM-based Talbot amplifier where the gain factor is optically reconfigurable. The general equations of phase modulation and dispersion allow us to achieve different gain factors with a fixed dispersive medium.
Time-to-frequency mapping is induced on an arbitrary optical pulse by XPM using a parabolic pump pulse. The new derived condition of the peak pump pulse allows the conversion of the input pulses having different durations.
In this work, we present a new simple method to synthesize a temporal pulse shaper using non-identical birefringent crystals. The shaper generates 2N sub-pulses to produce any temporal pulse shapes with high efficiency and fidelity. An optimization algorithm is used to optimize the amplitude of each sub-pulse and the specific time delay between the...
We propose a pulse rate multiplier based on the temporal Talbot effect using a phase-only birefringent optical filter. The Opto-geometrical parameters of the filter are obtained by an optimization algorithm to achieve the desired spectral response. Preliminary results show excellent agreement with those anticipated by theory.
We present a new simple method to synthesize a temporal pulse shaper using non-identical birefringent crystals. The shaper configuration consists of N crystal with appropriate length and orientation placed between a polarizer and an analyzer. The Opto-geometrical shaper parameters are achieved by an optimization algorithm. This shaper is capable of...
In this paper, we propose a novel approach to implement a pulse rate multiplier based on the temporal self-imaging effect using, for the first time to our knowledge, a birefringent optical filter. The proposed filter, with periodic quadratic phase-only filtering induced through engineered polarization mode dispersion, contains $N$ N -stage hybrid b...
We propose a frequency multiplying technique of a given periodic laser pulse train based on the temporal self-imaging effect using a birefringent filter which has a continuous quadratic phase over the operation bandwidth. An optimization algorithm is used to determine the opto-geometrical parameters of the filter to achieve the desired spectral res...
We propose a new method for the synthesis of arbitrary temporal output pulse profiles by using a birefringent laser pulse shaper. This shaper contains a series of $ N $ N birefringent crystals placed between input and output polarizers. The synthesis method starts with the linear time-invariant system theory to determine the optimal amplitudes of t...
In this work, we present a method for the synthesis of a birefringant shaper having arbitrarily ouptput pulse profiles. The shaper configuration consists of N birefringent crystals placed between a polarizer and an analyzer. The optogeometrical shaper parameters are obtained by the resolution of generalized nonlinear equation systems based on time-...
In this paper we present a key configuration of birefringent filter structure that can be used for many optical applications such as a birefringent filtering, dispersion compensation and laser pulse shaping. The configuration consists of N hybrid stages placed between a polarizer and an analyzer, with each hybrid stage containing a birefringent pla...
