We report on a novel monolithic high-power diode pumped Tm:YAG laser at 2.02 μm. The pulsed laser generates average output power and pulse energy of beyond 90W and 900mJ in 400 μs pulses, respectively. This wavelength allows usage of standard fused silica fibers and optics, a price competitive solution for minimally-invasive endoscopic surgery. Recent developments in double-clad fiber combiners enable a rugged delivery system for the laser and the OCT ideal for a seeing laser scalpel. This gives the possibility to detect in-depth underlying tissue not yet ablated by the laser in a 2D or 3D fashion with micrometer resolution.
Manuel Messner, Arne Heinrich, Clemens Hagen, and Karl Unterrainer, "Seeing laser scalpel: a novel monolithic high-power diode pumped Tm:YAG laser system at 2.02 µm with double-clad fiber combined OCT," Proc. SPIE 10054, Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems XV, 100540X (Presented at SPIE BiOS: January 31, 2017; Published: 14 February 2017); https://doi.org/10.1117/12.2250779.
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