Sökning: "Nonlinear Wave Modulation Spectroscopy"

Hittade 2 uppsatser innehållade orden Nonlinear Wave Modulation Spectroscopy.

1. 1. Evaluation of white-light generation as possible seed for a mid-infrared optical parametric chirped pulse amplifier

   Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Kärnfysik

   Författare :Chuang Lu; [2017]
   Nyckelord :nonlinear linear optics; ultrafast optics; Mid-infrared generation; near-infrared; Optical parametric amplification; Optical Parametric Chirped-pulse Amplification; supercontinuum generation; white-light generation; laser induced filamentation; Dispersion-scan; nonlinear propagation; Physics and Astronomy;

   Sammanfattning : White-light spectra of different crystals, based on 1030-nm intense pump pulses have been investigated in order to derive a near-infrared seed for mid-infrared generation. Among ten crystals, YAG (yttrium aluminium garnet), KGW (potassium gadolinium tungstate) and YVO4 (yttrium orthovanadate) exhibit the most suitable properties for supercontinuum generation with high efficiency for spectral broadening as well as high tolerance to optical damage. LÄS MER

3. 2. Nonlinear Non-Destructive Testing of ship hull composites

   Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Författare :Johan Larsson; Daniel Pettersson; [2004]
   Nyckelord :Non-contact testing; Non-Destructive Testing; Ultrasonic testing; Nonlinear Wave Modulation Spectroscopy; Sound velocity; Resonance.;

   Sammanfattning : Further development of an existing nonlinear ultrasound Non-Destructive Testing method is performed. The Nonlinear Wave Modulation Spectroscopy method is developed into an automated non-contact testing method. The method detects nonlinearities, such as cracks and delaminations, in a test object. LÄS MER