Paolo Bardella - Profile on Academia.edu (original) (raw)
Papers by Paolo Bardella
Picosecond pulse generation with 34W peak power using a monolithic quantum-dot tapered mode-locked laser and tapered optical amplifier
2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, 2013
Modelling of passive mode-locking in InAs quantum-dot lasers with tapered gain section
physica status solidi (c), 2012
Abstract We propose a computationally efficient approach for the simulation and design of index-g... more Abstract We propose a computationally efficient approach for the simulation and design of index-guided quantum-dot (QD) passively mode-locked lasers with tapered gain section; the method is based on the combination of simulations based on a finite difference beam-...
High-speed distributed-feedback lasers with nanoscale surface gratings
2013 IEEE 4th International Conference on Photonics (ICP), 2013
Extending the direct laser modulation bandwidth by exploiting the photon-photon resonance: modeling, simulations and experiments
ABSTRACT The direct laser modulation bandwidth can be extended substantially by introducing a sup... more ABSTRACT The direct laser modulation bandwidth can be extended substantially by introducing a supplementary photon-photon resonance (PPR) at a higher frequency than the carrier-photon resonance (CPR). The paper presents a modified rate equation model that takes into account the PPR by treating the longitudinal confinement factor as a dynamic variable. The conditions required for obtaining a strong PPR and an enhancement of the small-signal modulation bandwidth are analyzed and experimental results confirming the model are presented. Since the small-signal modulation bandwidth may not be indicative of the large-signal modulation capability, particularly in case of a small-signal modulation response with substantial variations across the bandwidth, we have also analyzed the influence of the PPR-enhanced small-signal modulation response shape on the large-signal modulation capability as well as the methods that can be employed to flatten the small-signal modulation transfer function between the CPR and PPR.
A Fast Time Domain Travelling Wave simulator for Quantum Dot Lasers and Amplifiers
FDTW Approach for Simulation of QD lasers and SOAs
Cavity optimization of 1.3μm InAs/InGaAs quantum dot passively mode-locked lasers
Semiconductor Lasers and Applications V, 2012
Tunable Master-Oscillator Power Amplifier Using All Chirped Quantum-Dot Structures
Conference on Lasers and Electro-Optics 2012, 2012
High power performances of broad bandwidths superluminescent diodes (SLDs) based on chirped-quantum-dot structures operating at 1100 and 1200 nm for optical coherence tomography (OCT) applications
CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009
New OCT systems demand higher resolution using broadband SLDs. This paper presents a new class of... more New OCT systems demand higher resolution using broadband SLDs. This paper presents a new class of SLDs based on chirped multilayered quantum dots to achieve broad spectral widths. These SLD chips and modules operating around 1.1 mum and 1.2 mum have demonstrated wide optical spectra, low spectral ripples and dips allied with record output powers crucial for signal-to-noise performance for
Modelling of Broad Band Quantum Dot Superluminescent Diodes With Chirping
We include in a traditional Finite-Difference Time-Domain simulator different models to describe ... more We include in a traditional Finite-Difference Time-Domain simulator different models to describe the carriers dynamics in MQW materials. The mode-locking maps of a 5QW laser obtained with the implemented models are compared.
Optics Letters, 2015
We experimentally study the generation and amplification of stable picosecond-short optical pulse... more We experimentally study the generation and amplification of stable picosecond-short optical pulses by a master oscillator power-amplifier configuration consisting of a monolithic quantum-dot-based gain-guided tapered laser and amplifier emitting at 1.26 μm without pulse compression, external cavity, gain-or Q-switched operation. We report a peak power of 42 W and a figure-of-merit for second-order nonlinear imaging of 38.5 W 2 at a repetition rate of 16 GHz and an associated pulse width of 1.37 ps.
Time Domain Travelling Wave Approach to Investigate the Multi-Mode Dynamics and the Self-Mode Locking in 1.3 µm InAs/GaAs Fabry-Perot Quantum Dot Lasers
2014 International Semiconductor Laser Conference, 2014
A new design procedure for DBR lasers exploiting the photon–photon resonance to achieve extended modulation bandwidth
Numerical analysis of passively mode-locked quantum-dot lasers with absorber section at the low-reflectivity output facet
A time-domain travelling-wave model including multi-population rate-equations for passively mode-locked quantum-dot lasers
Design and simulation of DBR lasers with extended modulation bandwidth exploiting photon-photon resonance effect
Influence of carrier diffusion in the separate confinement heterostructure (SCH) region and carri... more Influence of carrier diffusion in the separate confinement heterostructure (SCH) region and carrier capture by each quantum dots layer (QDL) in quantum dot lasers and SLDs is studied with a modified rate equations model. We perform the static analysis of several Dots-in-a-Well lasers and SLDs with different numbers of QDLs.
Quantum Dot Passively Mode-Locked Laser Optimization for High-Power and Short Pulses
Picosecond pulse generation with 34W peak power using a monolithic quantum-dot tapered mode-locked laser and tapered optical amplifier
2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, 2013
Modelling of passive mode-locking in InAs quantum-dot lasers with tapered gain section
physica status solidi (c), 2012
Abstract We propose a computationally efficient approach for the simulation and design of index-g... more Abstract We propose a computationally efficient approach for the simulation and design of index-guided quantum-dot (QD) passively mode-locked lasers with tapered gain section; the method is based on the combination of simulations based on a finite difference beam-...
High-speed distributed-feedback lasers with nanoscale surface gratings
2013 IEEE 4th International Conference on Photonics (ICP), 2013
Extending the direct laser modulation bandwidth by exploiting the photon-photon resonance: modeling, simulations and experiments
ABSTRACT The direct laser modulation bandwidth can be extended substantially by introducing a sup... more ABSTRACT The direct laser modulation bandwidth can be extended substantially by introducing a supplementary photon-photon resonance (PPR) at a higher frequency than the carrier-photon resonance (CPR). The paper presents a modified rate equation model that takes into account the PPR by treating the longitudinal confinement factor as a dynamic variable. The conditions required for obtaining a strong PPR and an enhancement of the small-signal modulation bandwidth are analyzed and experimental results confirming the model are presented. Since the small-signal modulation bandwidth may not be indicative of the large-signal modulation capability, particularly in case of a small-signal modulation response with substantial variations across the bandwidth, we have also analyzed the influence of the PPR-enhanced small-signal modulation response shape on the large-signal modulation capability as well as the methods that can be employed to flatten the small-signal modulation transfer function between the CPR and PPR.
A Fast Time Domain Travelling Wave simulator for Quantum Dot Lasers and Amplifiers
FDTW Approach for Simulation of QD lasers and SOAs
Cavity optimization of 1.3μm InAs/InGaAs quantum dot passively mode-locked lasers
Semiconductor Lasers and Applications V, 2012
Tunable Master-Oscillator Power Amplifier Using All Chirped Quantum-Dot Structures
Conference on Lasers and Electro-Optics 2012, 2012
High power performances of broad bandwidths superluminescent diodes (SLDs) based on chirped-quantum-dot structures operating at 1100 and 1200 nm for optical coherence tomography (OCT) applications
CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009
New OCT systems demand higher resolution using broadband SLDs. This paper presents a new class of... more New OCT systems demand higher resolution using broadband SLDs. This paper presents a new class of SLDs based on chirped multilayered quantum dots to achieve broad spectral widths. These SLD chips and modules operating around 1.1 mum and 1.2 mum have demonstrated wide optical spectra, low spectral ripples and dips allied with record output powers crucial for signal-to-noise performance for
Modelling of Broad Band Quantum Dot Superluminescent Diodes With Chirping
We include in a traditional Finite-Difference Time-Domain simulator different models to describe ... more We include in a traditional Finite-Difference Time-Domain simulator different models to describe the carriers dynamics in MQW materials. The mode-locking maps of a 5QW laser obtained with the implemented models are compared.
Optics Letters, 2015
We experimentally study the generation and amplification of stable picosecond-short optical pulse... more We experimentally study the generation and amplification of stable picosecond-short optical pulses by a master oscillator power-amplifier configuration consisting of a monolithic quantum-dot-based gain-guided tapered laser and amplifier emitting at 1.26 μm without pulse compression, external cavity, gain-or Q-switched operation. We report a peak power of 42 W and a figure-of-merit for second-order nonlinear imaging of 38.5 W 2 at a repetition rate of 16 GHz and an associated pulse width of 1.37 ps.
Time Domain Travelling Wave Approach to Investigate the Multi-Mode Dynamics and the Self-Mode Locking in 1.3 µm InAs/GaAs Fabry-Perot Quantum Dot Lasers
2014 International Semiconductor Laser Conference, 2014
A new design procedure for DBR lasers exploiting the photon–photon resonance to achieve extended modulation bandwidth
Numerical analysis of passively mode-locked quantum-dot lasers with absorber section at the low-reflectivity output facet
A time-domain travelling-wave model including multi-population rate-equations for passively mode-locked quantum-dot lasers
Design and simulation of DBR lasers with extended modulation bandwidth exploiting photon-photon resonance effect
Influence of carrier diffusion in the separate confinement heterostructure (SCH) region and carri... more Influence of carrier diffusion in the separate confinement heterostructure (SCH) region and carrier capture by each quantum dots layer (QDL) in quantum dot lasers and SLDs is studied with a modified rate equations model. We perform the static analysis of several Dots-in-a-Well lasers and SLDs with different numbers of QDLs.
Quantum Dot Passively Mode-Locked Laser Optimization for High-Power and Short Pulses