Generating subsurface acoustic waves in indocyanine green stained elastin biomaterial using a Q-switched laser

John A. Viator, Steve L. Jacques, Scott A. Prahl

Research output: Contribution to journalConference article

2 Scopus citations

Abstract

A Q-switched frequency-doubled Nd-YAG laser coupled to an optical parametric oscillator generated 4.75 ns 800 nm laser pulses to create a subsurface acoustic wave in planar indocyanine green gel samples and flat segments of elastin biomaterial stained with indocyanine green. The acoustic waves traveled through the target and were detected by a piezoelectric transducer. The waveforms were converted to measurements of pressure (and temperature) as a function of depth in the material. An algorithm was developed and applied to the acoustic signals to extract information about the the absorption coefficient as a function of depth in the samples.

Original languageEnglish (US)
Pages (from-to)104-111
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3254
DOIs
StatePublished - Dec 1 1998
EventLaser-Tissue Interaction IX - San Jose, CA, United States
Duration: Jan 26 1998Jan 28 1998

Keywords

  • Absorption coefficient
  • Depth profiling
  • Photoacoustic imaging
  • Photothermal imaging

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Generating subsurface acoustic waves in indocyanine green stained elastin biomaterial using a Q-switched laser'. Together they form a unique fingerprint.

  • Cite this