Hollow waveguide for giant Er:YAG laser pulses transfer

Michal Nemec; Helena Jelinkova; Petr Koranda; Miroslav Cech; Jan Sulc; Mitsunobu Miyagi; Yi-Wei Shi; Yuji Matsuura

doi:10.1117/12.525706

10 June 2004 Hollow waveguide for giant Er:YAG laser pulses transfer

Michal Nemec, Helena Jelinkova, Petr Koranda, Miroslav Cech, Jan Sulc, Mitsunobu Miyagi, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 5317, Optical Fibers and Sensors for Medical Applications IV; (2004) https://doi.org/10.1117/12.525706
Event: Biomedical Optics 2004, 2004, San Jose, CA, United States

Abstract

Short Er:YAG laser pulses were delivered by a cyclic olefin polymer coated silver hollow glass (COP/Ag) waveguide specially designed for a high power radiation. Er:YAG laser was Q-switched by an electro-optic shutter - LiNbO₃ Pockels cell with Brewster angle cut input/output faces. The maximum energy output obtained from this system was 29 mJ with the length of pulse 69 ns corresponding to 420 kW output peak power. The system was working with the repetition rate of 1.5 Hz. A delivery system composed of a lens (f = 40 mm), protector and waveguide with the 700/850 μm diameter and 50 cm or 1 m length. The measured maximum delivered intensity was 86 MW/cm² what corresponds to the transmission of 78.6 % for whole delivery system. Using of a sealed cap, this delivery system gives a possibility of the contact surgical treatment in many medicine branches, for example ophthalmology, urology or dentistry.

Citation Download Citation

Michal Nemec, Helena Jelinkova, Petr Koranda, Miroslav Cech, Jan Sulc, Mitsunobu Miyagi, Yi-Wei Shi, and Yuji Matsuura "Hollow waveguide for giant Er:YAG laser pulses transfer", Proc. SPIE 5317, Optical Fibers and Sensors for Medical Applications IV, (10 June 2004); https://doi.org/10.1117/12.525706

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