Photoacoustic-guided convergence of light through optically diffusive media

Opt Lett. 2011 Jun 1;36(11):2053-5. doi: 10.1364/OL.36.002053.


We demonstrate that laser beams can be converged toward a light-absorbing target through optically diffusive media by using photoacoustic-guided interferometric focusing. The convergence of light is achieved by shaping the wavefront of the incident light with a deformable mirror to maximize the photoacoustic signal, which is proportional to the scattered light intensity at the light absorber.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acoustics / instrumentation*
  • Computer-Aided Design
  • Equipment Design
  • Equipment Failure Analysis
  • Interferometry / instrumentation*
  • Lasers*
  • Lenses*
  • Light
  • Nephelometry and Turbidimetry / instrumentation*
  • Pattern Recognition, Automated / methods*