作者: EVADE 時(shí)間: 2025-3-21 21:09
Propagation of Electromagnetic Waves,III–V semiconductor materials. Of special significance are optical frequencies in the neighborhood of the bandgap, and hence for AlGaAs wavelengths from yellow-red to the near infra-red region of the spectrum, and for InGaAsP corresponding to the infra-red region. We also call optical waves light waves.作者: 撫育 時(shí)間: 2025-3-22 04:03
Coupling of Modes,perposition of two propagating modes . and . of the same frequency can be written as.where . and . are complex amplitudes, and the plus and minus signs denote backward and forward travelling waves. If the waveguide has perturbations which lead to a refractive index profile dependent on ., there is scattering of energy from the mode.作者: Parley 時(shí)間: 2025-3-22 06:36 作者: 美食家 時(shí)間: 2025-3-22 12:40 作者: 相一致 時(shí)間: 2025-3-22 15:24 作者: enflame 時(shí)間: 2025-3-22 17:35 作者: perpetual 時(shí)間: 2025-3-23 00:29
Planar Waveguides,In dielectric waveguides electromagnetic waves are guided by total internal reflection. In this chapter we study the one-dimensional guiding of waves in films.作者: Prophylaxis 時(shí)間: 2025-3-23 03:11
Semiconductor Crystals,cal properties such as absorption and refractive index can be varied by changes in the composition of the crystal. The interactions between photons and electrons are such that semiconductors are suited in an ideal manner for the processing of electrical and optical signals.作者: 貧困 時(shí)間: 2025-3-23 08:20
Electrons in Semiconductors,scussed. In what follows the fundamentals of the quantum theory will be presented, so far as they are relevant for the behavior of electrons in solids. This will therefore cover the band structure, densities of states and occupation probabilities. Quantum structures with constrained particle motion are also considered.作者: 眼界 時(shí)間: 2025-3-23 10:21
Heterojunctions,ay occur within a few (2 or 3) atomic layers. With lattice mismatching (> 0.1%) of the two semiconductors defects are formed at the interface, which lead to considerable deviations from the ideal behavior of a heterojunction.作者: LAPSE 時(shí)間: 2025-3-23 14:07 作者: Decongestant 時(shí)間: 2025-3-23 20:13
Emission and Absorption,eads to important relationships between absorption and luminescence, as well as conditions for light amplification. A quantum mechanical analysis then allows prediction of the spectral form of the absorption or amplification. As well as bulk matter, quantum structures are also discussed.作者: BROTH 時(shí)間: 2025-3-24 01:51 作者: 雪上輕舟飛過(guò) 時(shí)間: 2025-3-24 05:45
r providing the basic English manuscript of the text, his critical reading, and valuable comments. Thanks are also due to Mrs. A. Demmer, Mr. J. Matern, Mrs. B. Titze and Mrs. S. Pfetsch for preparing the camera ready manuscript and the figures. Springer- Verlag has generously supported the project 作者: obnoxious 時(shí)間: 2025-3-24 09:32
Strip Waveguides,ytical calculation of the mode fields and the propagation constants is not possible, apart from a few exceptions (e.g. waveguides of circular cross-section in a homogeneous outer layer). One therefore has to rely on approximate solutions.作者: hegemony 時(shí)間: 2025-3-24 11:04
Book 19931st editiong the basic English manuscript of the text, his critical reading, and valuable comments. Thanks are also due to Mrs. A. Demmer, Mr. J. Matern, Mrs. B. Titze and Mrs. S. Pfetsch for preparing the camera ready manuscript and the figures. Springer- Verlag has generously supported the project and cooper作者: 財(cái)產(chǎn) 時(shí)間: 2025-3-24 15:10
Book 19931st editionsing of optical signals. These optical communi- cations engineering devices are becoming increasingly important for optical disk storage systems, for optical chip-chip interconnections and of course for optical fiber transmission and exchange.作者: 大約冬季 時(shí)間: 2025-3-24 22:59 作者: Curmudgeon 時(shí)間: 2025-3-25 00:47 作者: LIMIT 時(shí)間: 2025-3-25 04:02 作者: esthetician 時(shí)間: 2025-3-25 09:30 作者: 陳腐的人 時(shí)間: 2025-3-25 15:13
Strip Waveguides,ndex of the film non-homogeneous, as in Fig. 4.1. A central strip with high index .. is bordered by material with smaller indices .., ..(.. > .., ..). This has the result that total reflection can also take place at the lateral interfaces (between .. and .., .. ) and thus form guided modes. The anal作者: Militia 時(shí)間: 2025-3-25 17:42
Coupling of Modes,perposition of two propagating modes . and . of the same frequency can be written as.where . and . are complex amplitudes, and the plus and minus signs denote backward and forward travelling waves. If the waveguide has perturbations which lead to a refractive index profile dependent on ., there is s作者: CLASH 時(shí)間: 2025-3-25 22:59 作者: 不發(fā)音 時(shí)間: 2025-3-26 00:29
Emission and Absorption,ulated emission processes turn out to be of special interest. Here radiation induces electron transitions from a high energy level to a lower level, the energy levels being separated by the energy of the emitted photon. The emitted photon is in phase with the exciting radiation and the wave may be a作者: Cougar 時(shí)間: 2025-3-26 05:33
Heterojunctions,on type (n-n, p-p) from junctions of different type (p-n). In the ideal case we have an abrupt junction between the materials. In practice junctions may occur within a few (2 or 3) atomic layers. With lattice mismatching (> 0.1%) of the two semiconductors defects are formed at the interface, which l作者: Tartar 時(shí)間: 2025-3-26 12:25
Laser Diodes,rs can be accumulated at double heterostructure pn-junctions. All these effects play a part in the construction of laser diodes. We shall discuss first the general properties of lasers, then enter into the special construction of laser diodes and discuss some of their characteristic properties.作者: OCTO 時(shí)間: 2025-3-26 13:51 作者: 諂媚于性 時(shí)間: 2025-3-26 19:24 作者: EXTOL 時(shí)間: 2025-3-26 21:37 作者: Melanoma 時(shí)間: 2025-3-27 03:48 作者: gospel 時(shí)間: 2025-3-27 05:16
Feldforschung: vertraut mit den Enden,vel to target cells, affecting their functions. There are specific factors on the surface of every exosomes, making sure that they will be taken up by certain type of cells. With these features, exosomes have been recognized to be one of the fundamental “messengers” for cell-cell communication. Rece作者: 辮子帶來(lái)幫助 時(shí)間: 2025-3-27 12:17 作者: nuclear-tests 時(shí)間: 2025-3-27 16:54 作者: 注視 時(shí)間: 2025-3-27 20:29
C. H. Renumadhavi,N. Jamuna,A. N. Chandana,Vinay Balamurali,Praveen Kumar Gupta,Ryna Shireen Sheriffpport English teachers for change in the recent innovative crosscurricula reform proposed for basic education in the Chinese context. The reform itself is regarded as the 8th nationwide curriculum innovation since the founding of the People’s Republic of China in 1949. I have been involved as a curr作者: 嚴(yán)峻考驗(yàn) 時(shí)間: 2025-3-27 22:54 作者: CAB 時(shí)間: 2025-3-28 05:22
John Keighleyiterature he found boring and stagnant. In his physical life he made this departure by means of voluntary exile, the relocation in Corfu where, as he put it in .’., ‘Greece offers you … the discovery of yourself’ (. 11). On the intellectual plane he withdrew into himself in order to evaluate his str作者: 勉勵(lì) 時(shí)間: 2025-3-28 07:17
A Study on Porous Bituminous Pavement as an Alternative Method for Ground Water Managementvement structure is kept such that it allows enough void between the aggregates particles for water to go through it freely. Porous bituminous pavement also decreases the surface runoff of nearby areas. This technique can also be used as an additional way of storm water mitigation and ground water r作者: 騎師 時(shí)間: 2025-3-28 10:51 作者: 膽小鬼 時(shí)間: 2025-3-28 16:35
“Sicherheitskulturen” als Vermittlungsfeld der “Integrit?ten” von Individuum und Gesellschaftzum Einsatz in Wirtschaft und Politik — stellt die sichere Gestaltung der Anwendung von Informationstechnik vor die Aufgabe, Regulierungsmechanismen zu finden, die konkret genug sind, um die spezifischen Sicherheitsprobleme unterschiedlicher Anwendungsbereiche einer übergreifenden Gestaltung zuzufüh作者: Keratectomy 時(shí)間: 2025-3-28 21:02
Regulation of isoflavonoid metabolism in alfalfa,apid increases in mRNA levels and enzyme activities of isoflavone reductase, phenylalanine ammonia-lyase, chalcone synthase and other defense genes are observed within 1 to 2 hours. The phytoalexin medicarpin and its antifungal metabolite sativan increase beginning at 4 and 8 hours, respectively, al作者: alliance 時(shí)間: 2025-3-29 00:19
Securitye financed transaction fail to complete successfully. The type of security used by the structured trade and receivable financier is described. The importance of the law of the place (‘lex situs’) to the perfection of possessory security by the financier over goods, right of sale, and disposal of pro作者: 輕率看法 時(shí)間: 2025-3-29 04:02 作者: Epithelium 時(shí)間: 2025-3-29 09:12
Alfred L. Weber,James V. Manzioneoperties and the internal stratigraphy within ice masses. Additional sections present an overview of passive methods (gravimetry, magnetics, seismology) and detail the mathematics of seismic and electromagnetic wave propagation.作者: overrule 時(shí)間: 2025-3-29 12:22 作者: 關(guān)心 時(shí)間: 2025-3-29 15:42
Complexity Theory of Real Functionsskeletal tissues when significant biomedical problems exist concomitant with, or in a cause and effect or contributional relationship with, aging. Such problems are an integral part of known skeletal and degenerative joint diseases, to physiologic imbalances, as well as to biomechanical problems wit作者: 獸群 時(shí)間: 2025-3-29 23:24 作者: capsule 時(shí)間: 2025-3-30 00:32 作者: 一起平行 時(shí)間: 2025-3-30 04:34
this volume discusses whether atmospheres could take the prominent and paradigmatic position previously held by art in order to make sense of such sensible experience of the world..978-3-030-24944-1978-3-030-24942-7作者: palette 時(shí)間: 2025-3-30 11:37 作者: 發(fā)展 時(shí)間: 2025-3-30 15:50
Paradise in the Sea: An Early Geography of Desire,m of the . more than its philosophy forms the focus of this chapter, which examines how, in effect, Eriugena’s cosmic iconography extends a place-region analogous in qualities to the Irish Sea Otherworld onto a Creation-wide scale. In other words, the text illustrates views of nature implicit in the作者: 氣候 時(shí)間: 2025-3-30 18:59
2730-7360 olve materials science.This book introduces characterizations of?hyperordered?structures using latest quantum beam technologies, the advanced theoretical methods for understanding the roles of the structures, and the state-of-the-arts materials containing the structures.?.In this book, the authors f
