3-um CW lasers for myringotomy and microsurgery

Kurt J. Linden; Christian P. Pfeffer; John Gary Sousa; Nicholas D'Alleva; Arash Aslani; Grzegorz Gorski; Margaret Kenna; Dennis S. Poe

doi:10.1117/12.980912

8 March 2013 3-μm CW lasers for myringotomy and microsurgery

Kurt J. Linden, Christian P. Pfeffer, John Gary Sousa, Nicholas D'Alleva, Arash Aslani, Grzegorz Gorski, Margaret Kenna, Dennis S. Poe

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Proceedings Volume 8565, Photonic Therapeutics and Diagnostics IX; 85652P (2013) https://doi.org/10.1117/12.980912
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

This paper describes the development and implementation of 3 μm lasers for myringotomy and microsurgery. Two different lasers were investigated. The first, an Er-doped, CW zirconate glass fiber laser optically pumped by a 970 nm diode laser, emitted > 1 W of CW power at 2.76 μm with concomitant green incoherent emission that served as a convenient visible illumination beam. The second, a 1 W CW Er:YAG solid-state laser also optically pumped by a 970 nm diode laser, emitted > 1 W of CW power at 2.94 μm, coincident with the strongest infrared water absorption peak. Running CW, both lasers are expected to avoid the loud acoustical shocks associated with pulsed lasers. Myringotomies were carried out with the Er:YAG laser on anaesthetized guinea pigs and the effects of the laser were documented. Laser ablated samples of tympanic membrane, soft tissue and bone were histologically examined. Histology results indicated that the CW Er:YAG laser is a potential candidate for a new myringotomy tool and possibly for otologic microsurgery, but deliverable power levels need to be increased to the 2 W (or higher) level. This work was funded under NIH SBIR Grant No. 5R44DC004899.

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Kurt J. Linden, Christian P. Pfeffer, John Gary Sousa, Nicholas D'Alleva, Arash Aslani, Grzegorz Gorski, Margaret Kenna, and Dennis S. Poe "3-μm CW lasers for myringotomy and microsurgery", Proc. SPIE 8565, Photonic Therapeutics and Diagnostics IX, 85652P (8 March 2013); https://doi.org/10.1117/12.980912

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