We have experimentally quantified calculus fragmentation by Er:YAG laser light. Er:YAG laser light was delivered to an underwater target through a sealed hollow optical fiber. Fragmentation efficiency was obtained for an alumina ball used as a calculus model when sealing caps with various focusing effects were used. Three types of human calculus were analyzed, and their absorption properties at the wavelength of Er:YAG laser light were obtained. The relationships among the absorption properties, calculus constituents, and fragmentation efficiency are discussed.
© 2005 Optical Society of America
(140.3500) Lasers and laser optics : Lasers, erbium
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(230.7370) Optical devices : Waveguides
Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura, Mitsunobu Miyagi, Seichi Saito, and Youichi Arai, "Characteristics of calculus fragmentation with Er:YAG laser light emitted by an infrared hollow optical fiber with various sealing caps," Appl. Opt. 44, 3266-3270 (2005)