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Semiconductor lasers are key components in many optical systems due to their advantages, including their small size, low cost, high efficiency, and low power consumption. It is well-known that semiconductor lasers under external perturbations, such as optical injection, optical feedback, or delayed coupling can exhibit a large variety of complex dynamical behaviors. Nowadays, cutting-edge engineering applications based on the complex dynamics of diode lasers are being conducted in areas, such as optical communications, optical signal processing, encoded communications, neuro-inspired ultra-fast optical computing devices, microwave signal generation, RADAR and LIDAR applications, biomedical imaging, and broadband spectroscopy. The prospects for these applications are even more exciting with the advent of photonic integrated circuits. This Special Issue focuses on theoretical and experimental advances in the nonlinear dynamics of semiconductor lasers subject to different types of external perturbations.

spin-VCSELs --- laser arrays --- laser dynamics --- spin flip model --- coupled lasers --- optoelectronics --- OLED --- laser --- organic laser diode --- nonlinear dynamics --- quantum dot lasers --- optical feedback --- chaotic --- linewidth enhancement factor (LEF) --- interband cascade laser --- mid-infrared chaos --- semiconductor laser --- optical phase --- gain-switching --- spontaneous emission noise --- quantum random number generation --- semiconductor lasers --- mutual coupling --- asymmetric coupling strength --- symmetry breaking --- narrow-linewidth lasers --- laser stability --- long delay --- injection-locking --- noise --- simulation --- pulsation --- chaos --- optical injection --- excitability --- neuromorphic dynamics --- modulation --- locking --- low-frequency fluctuations --- optical frequency comb --- polarization switching --- VCSEL

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In the last twenty years, there has been a growing interest in middle infrared (mid-IR) laser crystals and their application to achieve mid-IR laser radiations, which has benefited from the development of novel mid-infrared crystals and the improving quality of traditional mid-IR crystals. Moreover, these works have promoted the development of related technical applications. This Special Issue of the journal Crystals focuses on the most recent advances in mid-IR laser crystals, from materials to laser sources and applications. It aims to bring together the latest developments in novel mid-IR crystals, improvements in the quality of mid-IR crystals, mid-IR non-linear crystals and mid-IR lasers, as well as the application of mid-IR technology in spectroscopy, trace gas detection and remote sensing, optical microscopy and biomedicine. Aspiring authors are encouraged to submit their latest original research, as well as forward-looking review papers, to this Special Issue.

Technology: general issues --- Chemical engineering --- long pulse laser --- plasma plume --- composite materials --- CFRP --- GFRP --- 1989 nm --- Ho:YAP --- AO Q-switched laser --- long-wave infrared --- ZnGeP2 crystal --- Ho:YAG MOPA --- nonlinear infrared optical crystal --- AgGaGe5Se12 crystal --- Bridgman growth method --- solid-state --- diode-pumped --- Q-switched --- infrared and far-infrared lasers --- surface plasmon polaritons (SPPs) --- metal-insulator-metal (MIM) waveguide --- Fano line-shapes --- refractive index sensing --- millisecond pulse laser --- silicon avalanche photodiode (Si-APD) --- external capacitance --- photocurrent --- carrier flow --- lowering of the barrier --- APD --- Dy:CaF2-SrF2 --- crystal growth --- temperature gradient technology --- midinfrared crystal --- Sellmeier dispersion formula --- mid-infrared photonics --- chalcopyrite semiconductors --- orthorhombic ternary chalcogenides --- harmonic generation --- continuum generation --- group velocity matching --- infrared pulse laser --- fused silica --- plasma --- interaction between laser and matter --- numerical simulation --- plasma expansion velocity --- 2.78 μm mid-infrared emission --- Er/Tm --- PbF2 laser crystal --- energy transfer mechanism --- first-principles calculation --- β-Ga2O3 crystal --- optical floating zone --- saturable absorber --- Q-switch --- laser-induced damage threshold --- ZnGeP2 --- interference coating --- magnetorheological polish --- laser --- Ho:YVO4 --- double-pass-pumping --- laser diode --- long pulse laser --- plasma plume --- composite materials --- CFRP --- GFRP --- 1989 nm --- Ho:YAP --- AO Q-switched laser --- long-wave infrared --- ZnGeP2 crystal --- Ho:YAG MOPA --- nonlinear infrared optical crystal --- AgGaGe5Se12 crystal --- Bridgman growth method --- solid-state --- diode-pumped --- Q-switched --- infrared and far-infrared lasers --- surface plasmon polaritons (SPPs) --- metal-insulator-metal (MIM) waveguide --- Fano line-shapes --- refractive index sensing --- millisecond pulse laser --- silicon avalanche photodiode (Si-APD) --- external capacitance --- photocurrent --- carrier flow --- lowering of the barrier --- APD --- Dy:CaF2-SrF2 --- crystal growth --- temperature gradient technology --- midinfrared crystal --- Sellmeier dispersion formula --- mid-infrared photonics --- chalcopyrite semiconductors --- orthorhombic ternary chalcogenides --- harmonic generation --- continuum generation --- group velocity matching --- infrared pulse laser --- fused silica --- plasma --- interaction between laser and matter --- numerical simulation --- plasma expansion velocity --- 2.78 μm mid-infrared emission --- Er/Tm --- PbF2 laser crystal --- energy transfer mechanism --- first-principles calculation --- β-Ga2O3 crystal --- optical floating zone --- saturable absorber --- Q-switch --- laser-induced damage threshold --- ZnGeP2 --- interference coating --- magnetorheological polish --- laser --- Ho:YVO4 --- double-pass-pumping --- laser diode

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

In the last twenty years, there has been a growing interest in middle infrared (mid-IR) laser crystals and their application to achieve mid-IR laser radiations, which has benefited from the development of novel mid-infrared crystals and the improving quality of traditional mid-IR crystals. Moreover, these works have promoted the development of related technical applications. This Special Issue of the journal Crystals focuses on the most recent advances in mid-IR laser crystals, from materials to laser sources and applications. It aims to bring together the latest developments in novel mid-IR crystals, improvements in the quality of mid-IR crystals, mid-IR non-linear crystals and mid-IR lasers, as well as the application of mid-IR technology in spectroscopy, trace gas detection and remote sensing, optical microscopy and biomedicine. Aspiring authors are encouraged to submit their latest original research, as well as forward-looking review papers, to this Special Issue.

long pulse laser --- plasma plume --- composite materials --- CFRP --- GFRP --- 1989 nm --- Ho:YAP --- AO Q-switched laser --- long-wave infrared --- ZnGeP2 crystal --- Ho:YAG MOPA --- nonlinear infrared optical crystal --- AgGaGe5Se12 crystal --- Bridgman growth method --- solid-state --- diode-pumped --- Q-switched --- infrared and far-infrared lasers --- surface plasmon polaritons (SPPs) --- metal-insulator-metal (MIM) waveguide --- Fano line-shapes --- refractive index sensing --- millisecond pulse laser --- silicon avalanche photodiode (Si-APD) --- external capacitance --- photocurrent --- carrier flow --- lowering of the barrier --- APD --- Dy:CaF2-SrF2 --- crystal growth --- temperature gradient technology --- midinfrared crystal --- Sellmeier dispersion formula --- mid-infrared photonics --- chalcopyrite semiconductors --- orthorhombic ternary chalcogenides --- harmonic generation --- continuum generation --- group velocity matching --- infrared pulse laser --- fused silica --- plasma --- interaction between laser and matter --- numerical simulation --- plasma expansion velocity --- 2.78 μm mid-infrared emission --- Er/Tm --- PbF2 laser crystal --- energy transfer mechanism --- first-principles calculation --- β-Ga2O3 crystal --- optical floating zone --- saturable absorber --- Q-switch --- laser-induced damage threshold --- ZnGeP2 --- interference coating --- magnetorheological polish --- laser --- Ho:YVO4 --- double-pass-pumping --- laser diode --- n/a