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Laser-induced condensation by ultrashort laser pulses at 248 nm

Authors :
Tobias Pohl
Konradin Weber
Massimo Petrarca
Tamas Nagy
Jérôme Kasparian
Peter Simon
Andreas Vogel
Jean-Pierre Wolf
Q. Jusforgues
Pierre Joly
Source :
Applied Physics Letters, Applied Physics Letters, Vol. 102, No 9 (2013) P. 091112
Publication Year :
2013
Publisher :
AIP Publishing, 2013.

Abstract

We compare laser-induced condensation by UV laser pulses of femtosecond, sub-picosecond, and nanosecond duration between each other, as well as with respect to near-infrared (NIR) (800 nm) ultrashort laser pulses. Particle nucleation by UV pulses is so efficient that their growth beyond several hundreds of nm is limited by the local concentration of water vapour molecules. Furthermore, we evidence a dual mechanism: While condensation induced by ultrashort UV pulses rely on nitrogen photo-oxidative chemistry like in the NIR, nanosecond laser-induced condensation occurs without NO2 production, evidencing the domination of a mechanism distinct from that previously identified in the femtosecond regime.

Details

ISSN :
10773118 and 00036951
Volume :
102
Database :
OpenAIRE
Journal :
Applied Physics Letters
Accession number :
edsair.doi.dedup.....c34f522d49696e2c4c0257a928f263dd
Full Text :
https://doi.org/10.1063/1.4794416