Essays about: "Parametric Excitations"

Found 2 essays containing the words Parametric Excitations.

1. 1. Towards a setup for narrowband terahertz generation through difference-frequency mixing of chirped ultrashort pulses

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Isa Clementsson; [2023]
   Keywords : Physics and Astronomy;

   Abstract : Terahertz radiation is a useful tool for inducing lower-energy excitations in matter, where it can be used to cause structural changes through direct interaction with the crystal lattice. Sub-picosecond optical pulses can be used to generate intense broadband terahertz pulses through optical rectification in nonlinear crystals, reaching peak electric fields of several MV/m and conversion efficiencies as high as a few percent. READ MORE

3. 2. Study on Vibrations induced by Parametric Excitations on Strings

   University essay from Blekinge Tekniska Högskola/Avdelningen för maskinteknik

   Author : Armando Enrique León Guarena; [2007]
   Keywords : Vibrations; Parametric Excitations; Strings; Stay Cables; Modal Analysis;

   Abstract : The present thesis work studies the parametrically excited vibrations on bridge stay cables when the natural frequency of the bridge tower is half of the resonance frequency of the cable. This condition is found at the longest stay cables of the Øresund Bridge. READ MORE