Double-illumination photoacoustic microscopy

  • Junjie Yao
  • , Konstantin I. Maslov
  • , Ernest R. Puckett
  • , Kathryn J. Rowland
  • , Brad W. Warner
  • , Lihong V. Wang

Research output: Contribution to journalArticlepeer-review

Abstract

Recent developments of optical-resolution photoacoustic microscopy (OR-PAM) have improved its spatial resolution and imaging speed. However, the penetration depth of OR-PAM is still limited to ∼1 mm in tissue, owing to the strong tissue scattering. Here, we have developed double-illumination PAM (DI-PAM), which illuminates the sample from both top and bottom sides simultaneously. Through phantom and in vivo experiments, we have demonstrated for thin targets that DI-PAM has a penetration depth of ∼2 mm in tissue at 532 nm and a focal zone of 260 μm, both significant improvements over traditional reflection or transmission-mode OR-PAM.

Original languageEnglish
Pages (from-to)659-661
Number of pages3
JournalOptics Letters
Volume37
Issue number4
DOIs
StatePublished - Feb 15 2012

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