Fiber laser at 2 µm for soft tissue surgery

Aditi Ghosh; Debasis Pal; Ranjan Sen; Atasi Pal

doi:10.1117/12.2071817

18 November 2014 Fiber laser at 2 μm for soft tissue surgery

Aditi Ghosh, Debasis Pal, Ranjan Sen, Atasi Pal

Proceedings Volume 9266, High-Power Lasers and Applications VII; 92660E (2014) https://doi.org/10.1117/12.2071817
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

Strong water absorption at 2 μm generated recent interest in lasers at this wavelength for soft tissue surgery. A fiber Bragg grating-based, all-fiber, continuous-wave, cladding pumped, thulium-doped fiber laser at 1.95 μm is configured. The thulium-doped active fiber with octagonal-shaped inner cladding is pumped at 808 nm (total power of 17 W) with six laser diodes through a combiner. The laser power of 3.3 W (after elimination of unabsorbed pump power through a passive fiber) with slope efficiency of 23% (against launched pump power) is achieved. The linear variation of laser power with pump offers scope of further power scaling.

Citation Download Citation

Aditi Ghosh, Debasis Pal, Ranjan Sen, and Atasi Pal "Fiber laser at 2 μm for soft tissue surgery", Proc. SPIE 9266, High-Power Lasers and Applications VII, 92660E (18 November 2014); https://doi.org/10.1117/12.2071817

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