@article{sathyam95b,
  author = {U. S. Sathyam and A. Shearin and S. A. Prahl},
  title = {The Effect of Absorption Coefficient on Microsecond Ablation Thresholds Under Water},
  journal = {Lasers Surg. Med.},
  volume = {S7},
  pages = {5},
  year = {1995 abstract only},
  abstract = {The threshold fluences for gelatin containing an absorbing dye (10--2000\,cm$^{-1}$) under water were measured. Gelatin samples were prepared in a beaker to form a 1\,cm thick layer and covered with water. The beaker was placed on a PVDF transducer. The light source was a one microsecond pulsed-dye laser Laser pulses were delivered via 300, 600, and 1000 micron fibers at a distance of 1\,mm from the gelatin surface. The threshold energy was the minimum energy needed to produce an acoustic sgnal. These results were validated using spectrophotometric mass removal measurements. Microsecond non-contact ablation thresholds for artery and thrombus under water closely corresponded to those measured for gelatin targets with the same absorption coefficients. \textbf{Conclusion:} Threshold fluence is inversely proportional to the two-thirds root of the absorption coefficient and is relatively independent of material and geometry.},
}