Essays about: "waveguide"

Showing result 6 - 10 of 68 essays containing the word waveguide.

  1. 6. III-V semiconductor waveguides for application in nonlinear optics.

    University essay from KTH/Tillämpad fysik

    Author : Andreas Charalampous; [2022]
    Keywords : InGaP; optical waveguides; integrated optics; quantum nonlinear optics; SHG; SPDC; InGaP; optiska vågledare; integrerad optik; icke-linjär kvantoptik; SHG; SPDC;

    Abstract : This thesis presents studies on III-V semiconductor waveguides with particular emphasis on second-order optical nonlinearity. The nonlinear processes that were investigated in this thesis are the Second Harmonic Generation (SHG) and the Spontaneous Parametric Down-Conversion (SPDC). READ MORE

  3. 7. Computational simulations of the Axion Longitudinal Plasma HAloscope

    University essay from Stockholms universitet/Fysikum

    Author : Tove Klaesson; [2022]
    Keywords : ;

    Abstract : The quantum chromodynamics axion is a very light hypothetical particle that may simultaneously solve the dark matter and the strong CP problem. Recently, a new type of haloscope that can detect the resonant conversion of axions to photons was suggested, The Axion Longitudinal Plasma HAloscope (ALPHA). READ MORE

  4. 8. Scanning range extension by combining arrays with lenses

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Hairu Wang; [2022]
    Keywords : Dome Antenna; Dielectric Lens; Array Antenna; Kupolantenn; Dielektrisk lins; Array antenn;

    Abstract : Array antennas, and more specifically phased array antennas, are widely used in radar detection and communication systems because of their excellent beam scanning ability and simple control. Generally speaking, the scanning function can be realized in two ways: mechanically or electronically. READ MORE

  5. 9. Topological Photonic Lattices

    University essay from KTH/Tillämpad fysik

    Author : Zesheng Xu; [2022]
    Keywords : Topological photonics; Integrated photonics; Condensed matter physics physics; Optics; Topologisk fotonik; integrerad fotonik; fysik för kondenserad materia; Optik;

    Abstract : Topological Photonics is a rapidly growing field which explores the ideas of topological invariants adapted from condensed matter physics to optical systems. Thanks to integrated photonics platforms, the evolution of light in nanoscale photonic lattices can enable direct measurement of topological properties of the band-structure. READ MORE

  6. 10. Evaporation Duct Modelling for a Wave-Propagation Simulator

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Author : Oscar Eklund; [2022]
    Keywords : evaporation; duct; height; monin; obukhov; mos; surface; layer; ssft; byc; pj; businger; dyer; beljaars; holtslag; cheng; brutsaert; sheba;

    Abstract : Long-range communication proves to be a challenge due to the Earth’s curvature, since electromagnetic waves propagate away from the Earth’s surface in a free atmosphere. A possible solution to beyond line-of-sight communication is the atmospheric phenomenon known as the evaporation duct. READ MORE