Sökning: "Few-cycle pulses"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Few-cycle pulses.

1. 1. Generation, characterization and application of infrared few-cycle light pulses

   Författare :Ivan Sytcevich; NanoLund: Centre for Nanoscience; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Few-cycle pulses; pulse characterization; optical parametric amplification; Fysicumarkivet A:2022:Sytcevich;

   Sammanfattning : In recent decades, laser systems emitting pulses of light containing only a few electric field oscillations under their envelope have become common in many ultrafast optics laboratories. Owing to unique temporal characteristics and achieving extreme field strengths, these so-­called few­-cycle pulses have been instrumental in unlocking new regimes of light-­matter interaction. LÄS MER

3. 2. Enhancement of few-cycle light fields for relativistic nanophotonics

   Författare :Aitor de Andres Gonzalez; Laszlo Veisz; Ove Axner; Rodrigo Lopez-Martens; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Vacuum laser acceleration; spatio-spectral characterization; relativistic nanophotonics; optical parametric synthesis; fysik; Physics;

   Sammanfattning : Pulses of light that are both ultrashort and ultraintense are often generated using optical parametric amplifiers (OPA). These are capable of driving highly non-linear interactions with matter, which are interesting when studying the fundamental laws of our universe. LÄS MER

4. 3. Generation of Ultrashort Pulses – From Femtoseconds to Attoseconds

   Författare :Maite Louisy; Atomfysik; []
   Nyckelord :Attosecond; Femtosecond; Ultrashort laser pulses; Ultrafast optics; High-order harmonic generation; extreme ultraviolet; Post-compression; Hollow-core capillary; d-scan; Optical gating; Fysicumarkivet A:2017:Louisy;

   Sammanfattning : Electronic dynamics takes place on the attosecond timescale and can thus only be studied using a tool with attosecond temporal resolution. High harmonic generation (HHG) provides coherent attosecond pulses in the extreme ultraviolet spectral region. LÄS MER

5. 4. Photoemission Electron Microscopy for Ultrafast Nano-Optics - Femtoseconds to Attoseconds

   Författare :Erik Mårsell; Synkrotronljusfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nanorice; Spatiotemporal imaging; Attosecond pulses; Fysicumarkivet A:2016:Mårsell; Nanowires; Silver nanostructures; Femtosecond laser pulses; PEEM; Plasmonics; Ultrafast nano-optics;

   Sammanfattning : Ultrafast nano-optics is a new and quickly evolving research field centred around the control, manipulation, and application of light on a nanometre and femtosecond scale. This can lead to improved electro-optical devices, more sensitive spectroscopy, and real-time control of chemical reactions. LÄS MER

7. 5. Sources and Diagnostics for Attosecond Science

   Författare :Miguel Miranda; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pulse Compression; High-order Harmonic Generation; Ultrafast; Ultrashort; Attosecond; Femtosecond; Pulse Characterization; Fysicumarkivet A:2012:Miranda;

   Sammanfattning : Ultrafast science refers to physical events that happen on the femtosecond (1 fs=10^-15 s) and attosecond (1 as=10^-18 s) timescales. Generation of attosecond pulses is usually achieved by interacting high-intensity femtosecond pulses with matter (typically gases), in a process called high-order harmonic generation (HHG). LÄS MER