scholarly journals Radiation Effects in Optical Materials and Photonic Devices

10.5772/62547 ◽  
2016 ◽  
Author(s):  
Dan Sporea ◽  
Adelina Sporea
Keyword(s):  
Optical Materials ◽  
Radiation Effects ◽  
Photonic Devices

Optical Propagation in Solids

2006 ◽  
Author(s):  
Michael E. Thomas
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Solid State ◽  
Optical Fibers ◽  
Optical Materials ◽  
Photonic Devices ◽  
Index Of Refraction ◽  
Optical Detectors ◽  
Optical Propagation ◽  
Valence Bands

This chapter emphasizes the linear optical properties of solids as a function of frequency and temperature. Such information is basic to understanding the performance of optical fibers, lenses, dielectric and metallic mirrors, window materials, thin films, and solid-state photonic devices in general. Optical properties are comprehensively covered in terms of mathematical models of the complex index of refraction based on those discussed in Chapters 4 and 5. Parameters for these models are listed in Appendix 4. A general review of solid-state properties precedes this development because the choice of an optical material requires consideration of thermal, mechanical, chemical, and physical properties as well. This section introduces the classification of optical materials and surveys other material properties that must be considered as part of total optical system design involving solidstate optics. Solid-state materials can be classified in several ways. The following are relevant to optical materials. Three general classes of solids are insulators, semiconductors, and metals. Insulators and semiconductors are used in a variety of ways, such as lenses, windows materials, fibers, and thin films. Semiconductors are used in electrooptic devices and optical detectors. Metals are used as reflectors and high-pass filters in the ultraviolet. This type of classification is a function of the material’s electronic bandgap. Materials with a large room-temperature bandgap (Eg > 3eV) are insulators. Materials with bandgaps between 0 and 3 eV are semiconductors. Metals have no observable bandgap because the conduction and valence bands overlap. Optical properties change drastically from below the bandgap, where the medium is transparent, to above the bandgap, where the medium is highly reflective and opaque. Thus, knowledge of its location is important. Appendix 4 lists the bandgaps of a wide variety of optical materials. To characterize a medium within the region of transparency requires an understanding of the mechanisms of low-level absorption and scattering. These mechanisms are classified as intrinsic or extrinsic. Intrinsic properties are the fundamental properties of a perfect material, caused by lattice vibrations, electronic transitions, and so on, of the atoms composing the material.

Transient radiation effects in optical materials

1967 ◽  
Vol 14 (6) ◽  
pp. 62-67 ◽  
Author(s):  
Phillip N. Mace ◽  
Dennis H. Gill
Keyword(s):  
Optical Materials ◽  
Radiation Effects ◽  
Transient Radiation

Modeling of Radiation Effects in Silicon Photonic Devices

2015 ◽  
Vol 62 (5) ◽  
pp. 2155-2168 ◽  
Author(s):  
Francesco De Leonardis ◽  
Benedetto Troia ◽  
Carlo Edoardo Campanella ◽  
Francesco Prudenzano ◽  
Vittorio M. N. Passaro
Keyword(s):  
Radiation Effects ◽  
Photonic Devices ◽  
Silicon Photonic

Spectroscopic Studies of Radiation Effects on Optical Materials

2021 ◽  
pp. 229-251
Author(s):  
Sylvain Girard ◽  
Vincenzo De Michele ◽  
Adriana Morana
Keyword(s):  
Optical Materials ◽  
Radiation Effects ◽  
Spectroscopic Studies

scholarly journals Gamma radiation effects in amorphous silicon and silicon nitride photonic devices

2017 ◽  
Vol 42 (3) ◽  
pp. 587 ◽  
Author(s):  
Qingyang Du ◽  
Yizhong Huang ◽  
Okechukwu Ogbuu ◽  
Wei Zhang ◽  
Junying Li ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Gamma Radiation ◽  
Amorphous Silicon ◽  
Radiation Effects ◽  
Photonic Devices

scholarly journals SIMMETRIA PARITÀ-TEMPO IN OTTICA: VERSO UNA NUOVA INGEGNERIA DELLA LUCE

2020 ◽  
Author(s):  
Stefano Longhi
Keyword(s):  
Optical Materials ◽  
Photonic Devices ◽  
Field Theories ◽  
Sensor Technology ◽  
Quantum Field Theories ◽  
Quantum Field ◽  
Time Symmetry ◽  
Laser Technologies ◽  
Design And Manufacturing ◽  
Theoretical Developments

The introduction of the concept of parity-time symmetry in optics, inspired by recent theoretical developments in quantum mechanics and quantum-field theories, is revolutionizing our ability to design and manufacturing synthetic optical materials and photonic devices for molding the flow of light at the micro- and nano-scale, with novel functionalities impossible with ordinary materials and with important applications in the fields of laser technologies, integrated photonics and sensor technology. In this note I will illustrate the basic theoretical grounds of optical materials with paritytime symmetry and I will present the main recent applications to photonic technologies.

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