Search for dissertations about: "Detuning"

Showing result 16 - 20 of 28 swedish dissertations containing the word Detuning.

  2. 16. Design, Processing, and Characterization of High Frequency Flip Chip Interconnects

    Author : Wei-Cheng Wu; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coaxial; microwave; interconnect; transition; high frequency; microstrip; coplanar waveguide; flip chip; hot-via; packaging;

    Abstract : The demands for high frequency interconnect techniques for microwave integrated circuits (ICs) are growing with increasing operating frequencies of wireless communication systems. Interconnects have significant effect and impact on the overall system performance at high frequencies. READ MORE

  4. 17. Ultraviolet vertical-cavity surface-emitting lasers and vertical microcavities for blue lasers

    Author : Filip Hjort; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GaN; ultraviolet; microcavity; electrical conductivity; vertical-cavity surface-emitting laser; AlGaN; electrochemical etching; nanostructures; distributed Bragg reflector;

    Abstract : III-nitride materials are used for ultraviolet (UV) and visible light emitters. One such light source is the vertical-cavity surface-emitting laser (VCSEL) that could find applications within areas ranging from sterilization and medical treatment to car headlights and augmented reality displays. READ MORE

  5. 18. Time-resolved x-ray diffraction of nanostructured samples

    Author : A. I. H. Persson; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; x-ray diffraction; phonons; optoacoustic transducer; electron diffusion; nanowires; Fysicumarkivet A:2016:Persson;

    Abstract : The work presented in this thesis is based on time-resolved x-ray diffraction studies of InSb (111) samples. The experiments were carried out using a pump-probe configuration using short laser pulses as the pump and x-rays as the probe. Laser excitation leads to the formation of a strain pulse that propagates through the sample. READ MORE

  6. 19. Processing technologies for long-wavelength vertical-cavity lasers

    Author : Fredrik Salomonsson; KTH; []
    Keywords : VCSEL; vertical-cavity laser; semiconductor laser; long-wavelength; DBR; oxidation; wafer fusion; InGaAs; semiconductor processing;

    Abstract : Vertical-cavity surface-emitting lasers (VCSELs) areattractive as potential inexpensive high-performance emittersfor fibre-optical communication systems. Their surface-normalemission together with the small dimensions are beneficial forlow-cost fabrication since it allows on-wafer testing,simplified packaging and effective fibre-coupling. READ MORE

  7. 20. Transport Studies of Local-Gate Defined Quantum Dots in Nanowires

    Author : Carina Fasth; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Semiconductory physics; Fysik; Physics; quantum devices; nanowire; quantum dot; Halvledarfysik;

    Abstract : This thesis focuses on electrical transport in semiconductor InAs nanowires grown by chemical beam epitaxy. Initially, transport length scales of homogeneous InAs n-type nanowires are characterized by low-temperature magnetoconductance measurements. The measurements show phase-coherent conductivity corrections. READ MORE