Harmonic generation in ablation plasmas of wide bandgap semiconductors

Third and fifth harmonic generation of an IR (1.064 μm) pulsed laser has been produced in ablation plasmas of the wide bandgap semiconductors CdS and ZnS. The study of the temporal behaviour of the harmonic emission has revealed the presence of distinct compositional populations in these complex pla...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2011-06, Vol.13 (22), p.10755-10761
Main Authors: de Nalda, R, López-Arias, M, Sanz, M, Oujja, M, Castillejo, M
Format: Article
Language:English
Subjects:
Ablation
Clusters
Harmonic generations
Nanostructure
Nonlinearity
Plasmas
Temporal logic
Wide bandgap semiconductors
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Summary:Third and fifth harmonic generation of an IR (1.064 μm) pulsed laser has been produced in ablation plasmas of the wide bandgap semiconductors CdS and ZnS. The study of the temporal behaviour of the harmonic emission has revealed the presence of distinct compositional populations in these complex plasmas. Species ranging from atoms to nanometre-sized particles have been identified as emitters, and their nonlinear optical properties can be studied separately due to strongly differing temporal behaviour. At short distances from the target (
ISSN:1463-9076
1463-9084
DOI:10.1039/c0cp02904a