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Scattering properties of ultrashort laser pulses by air bubbles in the sea water

  • Liping Su*
  • , Shuyan Chen
  • , Weijiang Zhao
  • , Deming Ren
  • *Corresponding author for this work
  • Harbin Engineering University
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The Generalzed Lorenz-Mie theory(GLMT), which describes the interaction between spherical particles and laser pulses, is firstly introduced in this paper. Then scattering properties of ultrashort laser pulses by air bubbles in the sea water are studied, including the scattering efficiency factor, extinction efficiency factor, phase function and degree of polarization, and influences of the bubble size, pulse duration and scattering angle on pulse scattering properties are discussed. Finally, pulse scattering properties of bubbles are compared with those of suspended particles in the sea water. The results show that laser pulses have the smoothing effect, which strengthens with decrease of the pulse duration, but have no influences on the critical angle scattering and Brewster angle scattering. So they could be measured to distinguish between air bubbles and suspended particles and thus to detect air bubbles. This will have certain significances on pulsed laser detection for wake bubbles. The results also show that small bubbles could enhance the backscattering of the sea water, which is advantageous for pulsed laser detection for wake bubbles.

Original languageEnglish
Title of host publicationInternational Symposium on Photoelectronic Detection and Imaging 2011
Subtitle of host publicationLaser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging
DOIs
StatePublished - 2011
EventInternational Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging - Beijing, China
Duration: 24 May 201126 May 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8192
ISSN (Print)0277-786X

Conference

ConferenceInternational Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging
Country/TerritoryChina
CityBeijing
Period24/05/1126/05/11

Keywords

  • Air bubbles
  • GLMT
  • Laser detection
  • Scattering
  • Ultrashort laser pulses

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