Linear And Nonlinear Optical Responses Of Chiral Multifold Semimetals
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Linear And Nonlinear Optical Responses Of Chiral Multifold Semimetals
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Author : Miguel Ángel Sánchez Martínez
language : en
Publisher: Springer Nature
Release Date : 2023-05-30
Linear And Nonlinear Optical Responses Of Chiral Multifold Semimetals written by Miguel Ángel Sánchez Martínez and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-05-30 with Science categories.
Since the initial predictions for the existence of Weyl fermions in condensed matter, many different experimental techniques have confirmed the existence of Weyl semimetals. Among these techniques, optical responses have shown a variety of effects associated with the existence of Weyl fermions. In chiral crystals, we find a new type of fermions protected by crystal symmetries — the chiral multifold fermions — that can be understood as a higher-spin generalization of Weyl fermions. This work provides a complete description of all chiral multifold fermions, studying their topological properties and the k·p models describing them. We compute the optical conductivity of all chiral multifold fermions and establish their optical selection rules. We find that the activation frequencies are different for each type of multifold fermion, thus constituting an experimental fingerprint for each type of multifold fermion. Building on the theoretical results obtained in the first part of our analysis, we study two chiral multifold semimetals: RhSi and CoSi. We analyze the experimental results with k·p and tight-binding models based on the crystal symmetries of the material. We trace back the features observed in the experimental optical conductivity to the existence of multifold fermions near the Fermi level and estimate the chemical potential and the scattering lifetime in both materials. Finally, we provide an overview of second-order optical responses and study the second-harmonic generation of RhSi. We find a sizeable second-harmonic response in the low-energy regime associated with optical transitions between topological bands. However, this regime is extremely challenging to access with the current experimental techniques. We conclude by providing an overview of the main results, highlighting potential avenues to further research on chiral multifold semimetals and the future of optical responses as experimental probes to characterize topological phases.
Degenerate Second Order Nonlinear Optical Spectroscopy Of Chiral Weyl Semimetals
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Author : Baozhu Lu
language : en
Publisher:
Release Date : 2020
Degenerate Second Order Nonlinear Optical Spectroscopy Of Chiral Weyl Semimetals written by Baozhu Lu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Toward High Nonlinear Optical Responses
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Author : Marta Lanata
language : en
Publisher:
Release Date : 2002
Toward High Nonlinear Optical Responses written by Marta Lanata and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Linear And Nonlinear Optics
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Author : Kitsakorn Locharoenrat
language : en
Publisher: CRC Press
Release Date : 2021-01-31
Linear And Nonlinear Optics written by Kitsakorn Locharoenrat and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-31 with Science categories.
In recent years, optical properties of the unique atomic and molecular structures of materials have drawn great scientific interest. Linear optical properties of materials such as metals, metal oxides, magnetic oxides, and organic materials are based on energy transfer and find applications in wastewater treatment, forensic science, biomedical science, photovoltaics, nuclear technology, and LED displays. Nonlinear optical properties of materials are based on the nonlinear medium and find more advanced applications in frequency mixing generations and optical parametric oscillations. This book presents the underlying principles, implementation, and applications of the linear and nonlinear optical properties of materials and has been divided into two parts emphasizing these properties. The first part of the book, Linear Optics, discusses bimetallic nanoparticles in dielectric media and their integration to dye molecules to detect trace amounts of heavy metals at the nanometer level, as well as to enhance luminescence and image contrasts in forensic inspection and biomedical diagnosis. It shows how the integration of bimetallic nanoparticles into a ZnO matrix promotes broadening of the absorption spectrum from the ultraviolet to the visible wavelength. It explains the role of surface adsorption and photocatalytic degradation in dye-removal kinetics by Fe3O4 magnetic nanoparticles under pulsed white light. It also discusses the double-layer shielding tank design to safely store radioactive waste and photon propagation through the multilayer structures of a human tissue model. The second part of the book, Nonlinear Optics, presents general concepts such as electromagnetic theory, nonlinear medium, and wave propagation, as well as more advanced concepts such as second harmonic generation, phase matching, optical parametric interactions, different frequency generation, sum frequency generation, tunable laser, and optical resonant oscillator.
Linear And Nonlinear Optical Properties Of Novel Organic Crystals
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Author : Emmanuel Deepak D'Silva
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2015-01-09
Linear And Nonlinear Optical Properties Of Novel Organic Crystals written by Emmanuel Deepak D'Silva and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-01-09 with categories.
Nonlinear Optics (NLO) deals with the interactions of applied electromagnetic fields in various materials to generate new electromagnetic field altered in phase, frequency, amplitude or other physical properties. The nonlinear optical properties of materials play a role in many applications. The second order nonlinear response has a wide range of applications in the field of telecommunications; optical computing, storage and information processing etc. The third-order nonlinear optical response is important in all-optical switching, signal processing, and ultrafast optical communications. The objectives of the book covers synthesis and growth of bulk single crystals of organic nonlinear optical materials; Characterization of grown crystals by X-ray, thermal, mechanical and spectral techniques; Investigating the linear and nonlinear optical properties of the materials; provides a firm relationship between nonlinear optical property and molecular structure of the materials. The book consists of eight chapters. The extensive studies of the above objectives are presented in these chapters.
Nonlinear Optical Responses Of Molecules Solids And Liquids
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Author : Manthos G. Papadopoulos
language : en
Publisher:
Release Date : 2003
Nonlinear Optical Responses Of Molecules Solids And Liquids written by Manthos G. Papadopoulos and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Nonlinear Optical Properties Of Chiral Media
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Author : P. Fischer
language : en
Publisher:
Release Date : 2000
Nonlinear Optical Properties Of Chiral Media written by P. Fischer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Second Order Nonlinear Optical Properties Of Chiral Materials
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Author : Sonja Sioncke
language : en
Publisher:
Release Date : 2003
Second Order Nonlinear Optical Properties Of Chiral Materials written by Sonja Sioncke and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.