Author: Stefan Gianordoli
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
Book Description
Quantum Cascade Lasers on AlGaAs-GaAs for the Mid-infrared Regime
Author: Stefan Gianordoli
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
Book Description
GaAs/AlGaAs Mid-infrared Quantum Cascade Laser
Author: Benjamin Stanford Williams
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
Book Description
Deep-well GaAs- and InP-based Quantum Cascade Lasers for Mid-infared Emission
Author: Mithun D'Souza
Publisher:
ISBN:
Category :
Languages : en
Pages : 166
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 166
Book Description
Quantum Cascade Lasers
Author: Jérôme Faist
Publisher: Oxford University Press
ISBN: 0198528248
Category : Science
Languages : en
Pages : 321
Book Description
This book describes the physics, fabrication technology, and applications of the quantum cascade laser.
Publisher: Oxford University Press
ISBN: 0198528248
Category : Science
Languages : en
Pages : 321
Book Description
This book describes the physics, fabrication technology, and applications of the quantum cascade laser.
GaAs/AlGaAs Far-infrared Quantum Cascade Laser
Author: Hans Callebaut
Publisher:
ISBN:
Category :
Languages : en
Pages : 127
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 127
Book Description
Design, Fabrication and Study of GaAs-based Mid-IR Quantum Cascade Lasers
Author: Zeila Zanolli
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
Book Description
Nonlinear Photonics in Mid-infrared Quantum Cascade Lasers
Author: Louise Jumpertz
Publisher: Springer
ISBN: 3319658794
Category : Science
Languages : en
Pages : 152
Book Description
This thesis presents the first comprehensive analysis of quantum cascade laser nonlinear dynamics and includes the first observation of a temporal chaotic behavior in quantum cascade lasers. It also provides the first analysis of optical instabilities in the mid-infrared range. Mid-infrared quantum cascade lasers are unipolar semiconductor lasers, which have become widely used in applications such as gas spectroscopy, free-space communications or optical countermeasures. Applying external perturbations such as optical feedback or optical injection leads to a strong modification of the quantum cascade laser properties. Optical feedback impacts the static properties of mid-infrared Fabry–Perot and distributed feedback quantum cascade lasers, inducing power increase; threshold reduction; modification of the optical spectrum, which can become either single- or multimode; and enhanced beam quality in broad-area transverse multimode lasers. It also leads to a different dynamical behavior, and a quantum cascade laser subject to optical feedback can oscillate periodically or even become chaotic. A quantum cascade laser under external control could therefore be a source with enhanced properties for the usual mid-infrared applications, but could also address new applications such as tunable photonic oscillators, extreme events generators, chaotic Light Detection and Ranging (LIDAR), chaos-based secured communications or unpredictable countermeasures.
Publisher: Springer
ISBN: 3319658794
Category : Science
Languages : en
Pages : 152
Book Description
This thesis presents the first comprehensive analysis of quantum cascade laser nonlinear dynamics and includes the first observation of a temporal chaotic behavior in quantum cascade lasers. It also provides the first analysis of optical instabilities in the mid-infrared range. Mid-infrared quantum cascade lasers are unipolar semiconductor lasers, which have become widely used in applications such as gas spectroscopy, free-space communications or optical countermeasures. Applying external perturbations such as optical feedback or optical injection leads to a strong modification of the quantum cascade laser properties. Optical feedback impacts the static properties of mid-infrared Fabry–Perot and distributed feedback quantum cascade lasers, inducing power increase; threshold reduction; modification of the optical spectrum, which can become either single- or multimode; and enhanced beam quality in broad-area transverse multimode lasers. It also leads to a different dynamical behavior, and a quantum cascade laser subject to optical feedback can oscillate periodically or even become chaotic. A quantum cascade laser under external control could therefore be a source with enhanced properties for the usual mid-infrared applications, but could also address new applications such as tunable photonic oscillators, extreme events generators, chaotic Light Detection and Ranging (LIDAR), chaos-based secured communications or unpredictable countermeasures.
Mid-Infrared and Terahertz Quantum Cascade Lasers
Author: Dan Botez
Publisher: Cambridge University Press
ISBN: 1108570607
Category : Technology & Engineering
Languages : en
Pages : 552
Book Description
Learn how the rapidly expanding area of mid-infrared and terahertz photonics has been revolutionized in this comprehensive overview. State-of-the-art practical applications are supported by real-life examples and expert guidance. Also featuring fundamental theory enabling you to improve performance of both existing and future devices.
Publisher: Cambridge University Press
ISBN: 1108570607
Category : Technology & Engineering
Languages : en
Pages : 552
Book Description
Learn how the rapidly expanding area of mid-infrared and terahertz photonics has been revolutionized in this comprehensive overview. State-of-the-art practical applications are supported by real-life examples and expert guidance. Also featuring fundamental theory enabling you to improve performance of both existing and future devices.
Mid-infrared-emitting Quantum Cascade Lasers on Metamorphic Buffer Layers
Author: Ayushi Rajeev
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
When using conventional substrates, such as InP and GaAs, the materials constituting the superlattice (SL) core region of the quantum cascade laser (QCL) are constrained by strain-induced critical-thickness limitations. Metamorphic buffer layers (MBLs) can serve as "virtual substrates" with a designer-chosen surface lattice constant, thus expanding the compositional-design space for a variety of device structures, including short-wavelength QCLs. An optimized short-wavelength (3.4 [mu]m) single-phonon-resonant (SPR)+ miniband extraction QCL design, grown on an [InxGa1-xAs] MBL, is presented along with the optical and thermal device considerations in play. MBLs can be grown with a variety of graded regions such as linear composition grade from GaAs to [InxGa1-xAs] or by employing dislocation filters between Si substrate and InP. QCL and test superlattices' regrowth on these MBLs with the corresponding materials and device analysis, is presented in this work. In addition to the materials limitation for the design of QCL devices, the requirement to have the constituent layers (1-5 nm) to be precisely controlled in the various compositions and thicknesses, is a challenge. Interfacial grading in strained SLs is studied via atom probe tomography for SLs with various layer thicknesses and relative lattice strains. The tip reconstructions are analyzed by fitting the interfaces to diffusion profiles. Mechanisms possible for the observed interdiffusion profile, such as surface segregation and/or bulk diffusion, are discussed. With an understanding of the compositional gradient at the interfaces, together with optimized QCL designs and regrowth on the MBLs, short-wavelength QCLs with high performances can be achieved
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
When using conventional substrates, such as InP and GaAs, the materials constituting the superlattice (SL) core region of the quantum cascade laser (QCL) are constrained by strain-induced critical-thickness limitations. Metamorphic buffer layers (MBLs) can serve as "virtual substrates" with a designer-chosen surface lattice constant, thus expanding the compositional-design space for a variety of device structures, including short-wavelength QCLs. An optimized short-wavelength (3.4 [mu]m) single-phonon-resonant (SPR)+ miniband extraction QCL design, grown on an [InxGa1-xAs] MBL, is presented along with the optical and thermal device considerations in play. MBLs can be grown with a variety of graded regions such as linear composition grade from GaAs to [InxGa1-xAs] or by employing dislocation filters between Si substrate and InP. QCL and test superlattices' regrowth on these MBLs with the corresponding materials and device analysis, is presented in this work. In addition to the materials limitation for the design of QCL devices, the requirement to have the constituent layers (1-5 nm) to be precisely controlled in the various compositions and thicknesses, is a challenge. Interfacial grading in strained SLs is studied via atom probe tomography for SLs with various layer thicknesses and relative lattice strains. The tip reconstructions are analyzed by fitting the interfaces to diffusion profiles. Mechanisms possible for the observed interdiffusion profile, such as surface segregation and/or bulk diffusion, are discussed. With an understanding of the compositional gradient at the interfaces, together with optimized QCL designs and regrowth on the MBLs, short-wavelength QCLs with high performances can be achieved
Mid-Infrared and Terahertz Quantum Cascade Lasers
Author: Dan Botez
Publisher: Cambridge University Press
ISBN: 1108427936
Category : Science
Languages : en
Pages : 551
Book Description
A state-of-the-art overview of this rapidly expanding field, featuring fundamental theory, practical applications, and real-life examples.
Publisher: Cambridge University Press
ISBN: 1108427936
Category : Science
Languages : en
Pages : 551
Book Description
A state-of-the-art overview of this rapidly expanding field, featuring fundamental theory, practical applications, and real-life examples.