Sökning: "Gerchberg- Saxton algorithm"

Hittade 2 uppsatser innehållade orden Gerchberg- Saxton algorithm.

1. 1. Methods for determining focal point and delay for ultrasound arrays and multichannel electronics

   Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

   Författare :Svante Rosenlind; [2023]
   Nyckelord :Focusing algorithms; k-wave; Spatiotemporal inverse filter; Gerchberg- Saxton algorithm; Focused ultrasound; Technology and Engineering;

   Sammanfattning : High intensity focused ultrasound is a growing technique for tissue ablation, among other uses, and given its destructive capabilities, there is a need for control of where the energy is delivered. There exist a number of methods for focusing such ultrasound arrays, but these often assume prior knowledge of the impulse response, or require extensive full-system simulations. LÄS MER

3. 2. Pulsed Laser Beam Quality Assessment via Phase Retrieval

   Master-uppsats, Lunds universitet/Atomfysik

   Författare :Mattias Ammitzböll; [2021]
   Nyckelord :GSA; phase retrieval; Gerchberg-Saxton; femtosecond; pulsed; laser; beam quality; attosecond; interferometry; Physics and Astronomy;

   Sammanfattning : In the search for a better understanding of the fundamental nature of the atom, the development of femtosecond pulsed laser sources has opened up for many applications, in particular in time-resolved physics. For many of those, like the generation of attosecond pulses through high-order harmonic generation, high intensity is needed and the quality of the beam is a critical factor. LÄS MER