Optical feedback signal for ultrashort laser pulse ablation of tissue

B. M. Kim, M. D. Feit, A. M. Rubenchik, B. M. Mammini, L. B. Da Silva

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)


An optical feedback system for controlled precise tissue ablation is discussed. Our setup includes an ultrashort pulse laser (USPL), and a diagnostic system utilizing analysis of either tissue fluorescence or plasma emission luminescence. Current research is focused on discriminating hard and soft tissues such as bone and spinal cord during spinal surgery using either technique. Our experimental observations exhibit considerable spectroscopic contrast between hard and soft tissue, and both techniques offer promise for a practical diagnostic system.

Original languageEnglish
Pages (from-to)857-862
Number of pages6
JournalApplied Surface Science
Publication statusPublished - 1998 May
Externally publishedYes

Bibliographical note

Funding Information:
Work performed at Lawrence Livermore National Laboratory under the auspices of the US Department of Energy under contract No. W-7405-ENG-48.


  • Optical feedback system
  • Plasma luminescence
  • Tissue ablation
  • Tissue fluorescence
  • Ultrashort pulse laser

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • General Physics and Astronomy
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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