Sökning: "THz"

Visar resultat 11 - 15 av 27 uppsatser innehållade ordet THz.

  1. 11. Investigating Optical-Field-Induced Currents in GaN using Ultrafast Lasers

    Magister-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Vidar Flodgren; [2019]
    Nyckelord :GaN; gallium nitride; nanoscience; material science; ultrafast lasers; Yb Laser; Pharos Laser; titanium sapphire laser; device fabrication; lift-off; gold etching; optical-field-induced currents; modelling; matlab; Physics and Astronomy;

    Sammanfattning : This study saw the development of an experimental setup capable of generating and measuring optical-field-induced currents in a variety of nanodevices fabricated specifically for this project. Each device design features two metallic contacts, closely separated by about 5 micrometers, deposited onto a semiconductor or insulator substrate. LÄS MER

  3. 12. Heteroepitaxy of OP-GaP on GaAs for frequency conversion in mid-IR and THz regions

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Tangjie Mu; [2019]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 13. Measurement of Coating Thickness Based on Terahertz Time-Domain Spectroscopy (THz-TDS) Technology

    Master-uppsats, KTH/Fysik

    Författare :Yiran Yu; [2018]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  5. 14. Capacitance Optimization and Ballistic Modeling of Nanowire Transistors

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Azal Alothmani; [2018]
    Nyckelord :Nanowire transistor; 1-D MOSFET; RF performance; permittivity; parasitic capacitance; HSQ; COMSOL Multiphysics; Technology and Engineering;

    Sammanfattning : Downscaling of Si-based metal-oxide-semiconductor field-effect transistors (MOSFETs) has contributed to increased microchip device density and to improve the functionality of the electronic circuits. The dimensions of state of art MOSFET is down to a few nanometers. It has been demonstrated that smaller MOSFETs are faster and more energy-efficient. LÄS MER

  7. 15. Time-frequency analysis of THz-time domain spectroscopy data

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för systemteknik

    Författare :Hugo Laurell; [2018]
    Nyckelord :;

    Sammanfattning : This text investigates THz-TDS signals in the time-frequency domain. Addi- tionally this text discusses the prospects of using time-frequency analysis to alleviate distortion in THz spectrographic characterizations induced by back- reflections in the free space electro optic sampling used in the THz time-domain spectroscopy detection scheme. LÄS MER