Sökning: "non-linear polarisation"

Hittade 3 avhandlingar innehållade orden non-linear polarisation.

  1. 1. Growth and Characterisation of Non-linear Ferroelectric Heterostructures

    Författare :Khaled Khamchane; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : High dielectric constant or ferroelectric materials are needed for a range of devices, non-volatile ferroelectric computer memories, NVFRAMs, microwave devices utilising the non-linear polarisation as a function of electric field, or other microwave applications. High dielectric constant and low losses can be achieved in single crystals of ferroelectrics. LÄS MER

  3. 2. Time resolved laser spectroscopy

    Författare :Karin Ekvall; KTH; []
    Nyckelord :non-linear polarisation; third and fifth order susceptibility; cross phase modulation; transient absorption femtosecond spectroscopy;

    Sammanfattning : .... LÄS MER

  4. 3. Upconversion Detection for Improved Nonlinear Mid-infrared Spectroscopy in Flames

    Författare :Rasmus Lyngbye Pedersen; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; infrared; upconversion; degenerate four wave mixing; hydrogen cyanide; polarisation spectroscopy;

    Sammanfattning : This thesis deals with the addition of upconversion detection to non-linear mid-infrared laser spectroscopy techniques. The techniques investigated here are degenerate four wave mixing (DFWM) and infrared polarization spectroscopy (IRPS). LÄS MER