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Proceedings Paper

Laser energy repartition inside metal, sapphire, and quartz surgical laser tips
Author(s): Wolf D. Seka; Douglas J. Golding; B. Klein; Raymond J. Lanzafame; David W. Rogers
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Paper Abstract

We have investigated the processes involved in cutting biological tissues with surgical sapphire tips metal tips and sculpted quartz fibers. We have found that all of these devices make very inefficient use of expensive laser energy. We have further found that the cutting actions of all the tips tested rely primarily on the concept of " hot" tips operating at temperatures of 600C to 700C. The heat transfer between tip and tissue is primarily via blackbody radiation from the tip. The process is aided by the coincidence of the peak of the blackbody radiation spectrum for 600C to 700C at -3 im with the very strong water absorption peak at the same wavelength. Based on the " hot" tip concept the efficiency of these tips can be increased from the present 1 to 3 to near 100. The resulting reduced laser power requirements allow contemplation of diode laser sources with concomitant savings in complexity power and cooling requirements maintenance and lifetime improvements and significant cost savings. 1.

Paper Details

Date Published: 1 April 1991
PDF: 8 pages
Proc. SPIE 1398, CAN-AM Eastern '90, (1 April 1991); doi: 10.1117/12.47792
Show Author Affiliations
Wolf D. Seka, Univ. of Rochester (United States)
Douglas J. Golding, Univ. of Rochester (United States)
B. Klein, Univ. of Rochester (United States)
Raymond J. Lanzafame, Rochester General Hospital (United States)
David W. Rogers, Rochester General Hospital (United States)


Published in SPIE Proceedings Vol. 1398:
CAN-AM Eastern '90

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