Flashlamp pumped Er:YAG lasers are successfully used clinically for both precise soft and hard tissue ablation. Since
several years a novel diode pumped Er:YAG laser system (Pantec Engineering AG) is available, with mean laser power
up to 40 W and pulse repetition rate up to 1 kHz.
The aim of the study was to investigate the suitability of the laser system specifically for stapedotomy. Firstly an
experimental setup was realized with a beam focusing unit and a computer controlled translation stage to move the
samples (slices of porcine bone) with a defined velocity while irradiation with various laser parameters. A microphone
was positioned in a defined distance to the ablation point and the resulting acoustic signal of the ablation process was
recorded. For comparison, measurements were also performed with a flash lamp pumped Er:YAG laser system. After
irradiation the resulting ablation quality and efficacy were determined using light microscopy. Using a high speed
camera and “Töpler-Schlierentechnik” the cavitation bubble in water after perforation of a bone slice was investigated.
The results show efficient bone ablation using the diode pumped Er:YAG laser system. Also a decrease of the sound
level and of the cavitation bubble volume was observed with decreasing pulse duration. Higher repetition rates lead to a
slightly increase of thermal side effects but have no influence on the ablation efficiency.
In conclusion, these first experiments demonstrate the high potential of the diode pumped Er:YAG laser system for use
in middle ear surgery.
Karl Stock, Holger Wurm, and Florian Hausladen, "Primary investigations on the potential of a novel diode pumped Er:YAG laser system for middle ear surgery," Proc. SPIE 9689, Photonic Therapeutics and Diagnostics XII, 96892K (Presented at SPIE BiOS: February 14, 2016; Published: 1 March 2016); https://doi.org/10.1117/12.2213105.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the proceedings. They include the speaker's narration with video of the slides and animations. Most include full-text papers. Interactive, searchable transcripts and closed captioning are now available for 2018 presentations, with transcripts for prior recordings added daily.
Search our growing collection of more than 16,000 conference presentations, including many plenaries and keynotes.