Theoretical investigation of optical phenomenon from nanometric antireflex layers

Ferromagnetic Resonance Investigation of GaMnAs Nanometric Layers

This thesis is dedicated to the study of the magnetic properties of GaMnAs nanometric layers by the ferromagnetic resonance (FMR) technique. Three series of samples have been studied to investigate independently the influence of the strain, the hole concentration and the Mn concentration on the magnetic properties of GaMnAs. In the first series, the Ga1−xMnxAs samples with x=0.07, grown on GaAs...

Theoretical Investigation of Large-Signal Noise in Nanometric Schottky-Barrier Diodes Operating in External Resonant Circuits

P. Shiktorov, E. Starikov, V. Gružinskis, L. Varani, J.C. Vaissière, L. Reggiani, S. Pérez and T. González Semiconductor Physics Institute, A. Goštauto 11, 2600 Vilnius, Lithuania CEM2 — Centre d’Electronique et de Micro-optoelectronique de Montpellier (CNRS UMR 5507) Université Montpellier II, 34095 Montpellier Cedex 5, France INFM — National Nanotechnology Laboratory, Dipartimento di Ingegner...

Investigation of Gas Ionization Phenomenon at Optical and Ir Frequencies

Theoretical and Experimental Investigation of Optical Properties of ZnS Zig-Zag Thin Films

Zigzag ZnS thin films prepared by thermal evaporation method using glancing angle deposition (GLAD) technique. ZnS films with zigzag structure were produced at deposition angles of 0˚, 60˚ and 80˚ at room temperature on glass substrates. Surface morphology of the films w:as char:acterized by using field emission scanning electron microscopy (FESEM). The optical properties of the specimens were i...

Theoretical Investigation of Doping Concentration in Silicon Semiconductor Using Optical Principle

This paper investigates the amount of doping concentration in silicon semiconductor using optical principle.  Both donor and acceptor impurities of n type and p-type silicon semiconductor materials are computed at wavelength of 1550 nm. During the computation of donor and acceptor impurities, both reflection and absorption losses are considered. Theoretical result showed that transmitted intens...