Sökning: "Nadeem Akram"

Hittade 2 avhandlingar innehållade orden Nadeem Akram.

1. 1. Photonic devices with MQW active material and waveguide gratings : modelling and characterisation

   Författare :Nadeem Akram; Lars Thylén; Hartmut Hillmer; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Method of Lines; Grating; ARROW Waveguide; Semiconductor laser; quantum well; Photonics; Fotonik;

   Sammanfattning : The research work presented in this thesis deals with modelling, design and characterisation of passive and active optical waveguide devices. The rst part of the thesis is related to algorithm development and numerical modelling of planar optical waveguides and gratings using the Method of Lines (MoL). LÄS MER

3. 2. Transmission of slow highly charged ions through nano-structures

   Författare :Nadeem Akram; Reinhold Schuch; Friedrich Aumayr; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Highly charged ions; nano-structures; nanocapillaries; ion-guiding; fysik; Physics;

   Sammanfattning : This thesis is based on experimental investigations of transmitting slow highly charged ions through nano-structures of various cross-sections. Transmission through rhombic and rectangular nanocapillaries in muscovite and phlogopite mica, respectively, is used to study the guiding and shaping of highly charged ion beams. LÄS MER