Nd:YAG/Er:YAG dual heads with three-wavelength laser system for dentistry

Gilwon Yoon; Hong Sig Kim; Taemin Hong; Won Ky Kim; Alexandre M. Zabaznov; Alexandre I. Abramovitch; Vladimir B. Tsvetkov; Ivan Alexandrov Shcherbakov

doi:10.1117/12.238816

24 April 1996 Nd:YAG/Er:YAG dual heads with three-wavelength laser system for dentistry

Gilwon Yoon, Hong Sig Kim, Taemin Hong, Won Ky Kim, Alexandre M. Zabaznov, Alexandre I. Abramovitch, Vladimir B. Tsvetkov, Ivan Alexandrov Shcherbakov

Author Affiliations +

Proceedings Volume 2676, Biomedical Sensing, Imaging, and Tracking Technologies I; (1996) https://doi.org/10.1117/12.238816
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

A prototype pulsed laser of dual heads of Nd:YAG and Er:YAG has been developed. Nd:YAG laser emits 1.06 micrometers and 1.3 micrometers. Er:YAG laser generates 2.94 micrometers. This laser system is designed for treating both soft and hard tissues in dentistry. Nd:YAG laser has about 100 microseconds pulse duration and repetition rates are up to 100 Hz at 1.06 micrometer and up to 30 Hz at 1.3 micrometer. The average power at 50 Hz is up to 30 W at 1.06 micrometer. Up to 10 W at 30 Hz can be obtained at 1.3 micrometer. Er:YAG laser has about 100 microsecond pulse duration, repetition rates up to 5 Hz and the average power up to 5 W. Current 1.06 micrometer Nd:YAG dental lasers show some difficulties in treating soft tissue due to low absorption and higher penetration. Dye as absorbing medium is often applied on targets to enhance absorption. A 1.3 micrometer wavelength is expected to be valuable for soft tissue treatment since absorption at this wavelength is more than ten times higher than at 1.06 micrometer. A 2.94 micrometer wavelength is available for hard tissue surgery.

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Gilwon Yoon, Hong Sig Kim, Taemin Hong, Won Ky Kim, Alexandre M. Zabaznov, Alexandre I. Abramovitch, Vladimir B. Tsvetkov, and Ivan Alexandrov Shcherbakov "Nd:YAG/Er:YAG dual heads with three-wavelength laser system for dentistry", Proc. SPIE 2676, Biomedical Sensing, Imaging, and Tracking Technologies I, (24 April 1996); https://doi.org/10.1117/12.238816

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KEYWORDS

Laser dentistry

Tissues

Nd:YAG lasers

Er:YAG lasers

Laser systems engineering

Absorption

Laser development

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