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A Kagome fiber-based, high energy delivery laser scalpel system for ultrafast laser microsurgery
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Paper Abstract

We present the development of a 5 mm, piezo-actuated, ultrafast laser scalpel for microsurgery with a capability to deliver energies in excess of 1 μJ per pulse. Having previously established that the maximum energy deliverable was limited by cladding damage in photonic badgap fibers, we utilized a large, 35μm cored inhibited-coupling Kagome fiber that allowed the delivery of micro-Joule energy femtosecond pulses. To maintain diffraction limited performance over the entire scan range of the piezo-actuated fiber tip, special objective lenses were developed and manufactured out of a high-refractive index Zinc Sulfide (ZnS) crystal. The probe was packaged in hypodermic 304SS stainless steel with a form factor minimizing in-line configuration. The probe’s performance was tested via metal and tissue ablation studies, characterizing highspeed ablation parameters and uniformity of ablation over the scan area. Additionally, we studied the nonlinear performance of ZnS and Calcium Fluoride (CaF2) as materials for refractive optics and determined the maximum energy deliverable through our probe using these optical materials. The high energy delivery through the probe system should allow for fast and effective tissue ablation.

Paper Details

Date Published: 22 February 2017
PDF: 11 pages
Proc. SPIE 10066, Energy-based Treatment of Tissue and Assessment IX, 100660U (22 February 2017); doi: 10.1117/12.2253446
Show Author Affiliations
Kaushik Subramanian, The Univ. of Texas at Austin (United States)
Ilan Gabay, The Univ. of Texas at Austin (United States)
Adam Shadfan, Rice Univ. (United States)
Michal Pawlowski, Rice Univ. (United States)
Ye Wang, Rice Univ. (United States)
Tomasz Tkaczyk, Rice Univ. (United States)
Adela Ben-Yakar, The Univ. of Texas at Austin (United States)


Published in SPIE Proceedings Vol. 10066:
Energy-based Treatment of Tissue and Assessment IX
Thomas P. Ryan, Editor(s)

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