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Tesi etd-08302013-180810


Thesis type
Tesi di laurea magistrale
Author
BONITO, VALENTINA
URN
etd-08302013-180810
Title
Effects of polarization, plasma and thermal initiation pathway on irradiance threshold of laser induced optical breakdown
Struttura
INGEGNERIA DELL'INFORMAZIONE
Corso di studi
INGEGNERIA BIOMEDICA
Commissione
relatore VARGHESE, BABU
relatore Prof. Landini, Luigi
Parole chiave
  • irradiance
  • optical breakdown
  • thermal breakdown
  • plasma
  • radial polarization
Data inizio appello
24/09/2013;
Consultabilità
completa
Riassunto analitico
The aim of this work of thesis is to find an effective method to lower the irradiance threshold for laser induced optical breakdown. Here we investigated three potential solutions: (i) use of radially polarized light and influence of size of focal spot, (ii) thermionic emission of seed electrons (thermal initiation pathway) for creating optical breakdown (iii) presence of free electrons (ionization by an external plasma source).
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