Observation on Laser Induced Lens Effect in Sound Generation Under Water Using High Power Ultrashort Pulse Laser

Abstract

The ultrashort pulse of Nd:YAG laser system is used to generate the sound in water. The picosecond laser beams are focused at two points in experiments. This effect implies that the time response is inherent due to the changes of index of refraction of water induced by laser beam intensity.

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Document Details

Document Type
Technical Report
Publication Date
Jan 24, 2002
Accession Number
ADP012404

Entities

People

  • Huijuan He
  • Saosong Feng

Organizations

  • Shanghai Institute of Optics and Fine Mechanics

Tags

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Waves
  • Acoustics
  • Amplifiers
  • Chemical Lasers
  • Intensity
  • Laser Beams
  • Laser Pulses
  • Lasers
  • Light (Electromagnetic Radiation)
  • Picosecond Time
  • Refraction
  • Refractive Index
  • Shock Waves
  • Sound Waves
  • Waves
  • Yag Lasers

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy