Laser detection of the parameters of small solid particle located in air

A. Andreev, T. Ueda, M. Wakamatsu, A. Golub

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The problem of small particle size and material detection is important for industrial and environmental applications. Previous investigations have shown the possibility of using the laser breakdown method to achieve first goal; the sensitivity of this method is a thousand times higher than that of conventional methods. However, for small particle sizes, the damage threshold of the solid target in this case is very close to the breakdown point of pure air. After breakdown, there is a small volume of dense hot plasma that emits radiation. We analyzed this radiation especially at late stage using an analytical model and simulation code as well as by experiment, and found that the emission intensity varied depending on the laser type and plasma parameters including initial particle size.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsV.I. Ustugov
Pages161-170
Number of pages10
Volume4350
DOIs
Publication statusPublished - 2001
Externally publishedYes
EventSolid State Lasers (Laser Optics 2000) - St. Petersburg, Russian Federation
Duration: 2000 Jun 262000 Jun 30

Other

OtherSolid State Lasers (Laser Optics 2000)
CountryRussian Federation
CitySt. Petersburg
Period00/6/2600/6/30

Keywords

  • Laser breakdown in air
  • Laser plasma line emission
  • Laser pulse
  • Small solid particle size

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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