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Scientific article
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English

Laser-induced condensation by ultrashort laser pulses at 248 nm

Published inApplied physics letters, vol. 102, no. 9, 091112
Publication date2013
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.

Keywords
  • Condensation
  • Ultraviolet light
  • Ultraviolet lasers
  • Nanoparticles
  • Nucleation
Citation (ISO format)
JOLY, Pierre et al. Laser-induced condensation by ultrashort laser pulses at 248 nm. In: Applied physics letters, 2013, vol. 102, n° 9, p. 091112. doi: 10.1063/1.4794416
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Article (Published version)
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ISSN of the journal0003-6951
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