High-power continuous-wave 3- and 2-μm cascade Ho 3+: ZBLAN fiber laser and its medical applications

Tetsumi Sumiyoshi; Hitoshi Sekita; Tsunenori Arai; Shunichi Sato; Miya Ishihara; Makoto Kikuchi

doi:10.1109/2944.796314

High-power continuous-wave 3- and 2-μm cascade Ho ³⁺: ZBLAN fiber laser and its medical applications

Tetsumi Sumiyoshi, Hitoshi Sekita, Tsunenori Arai, Shunichi Sato, Miya Ishihara, Makoto Kikuchi

Research output: Contribution to journal › Article › peer-review

102 Citations (Scopus)

Abstract

A new medical fiber laser oscillating at two useful wavelengths (3 and 2 μm) is reported. We have demonstrated highly efficient and high-power continuous-wave cascade oscillation at room temperature with a holmium ion-doped fluoride glass fiber laser pumped with a 1.15-μm fiber Raman laser. The simultaneous oscillation wavelengths were 3 and 2 μm, and their combined output power was 3.0 W with a slope efficiency of 65%. To our best knowledge, this is the first achievement of watt-level-output power in the mid-infrared region with ZrF ₄-BaF ₂-LaF ₃-AlF ₃-NaF (ZBLAN) glass fiber. In experiments to evaluate potential for medical applications, we tested the two-wavelength beam as a laser surgical knife on soft rabbit tissues and demonstrated that it had strong cutting capability, and that the coagulation layer thickness could be controlled by varying the power ratio of the two-wavelength laser.

Original language	English
Pages (from-to)	936-943
Number of pages	8
Journal	IEEE Journal on Selected Topics in Quantum Electronics
Volume	5
Issue number	4
DOIs	https://doi.org/10.1109/2944.796314
Publication status	Published - 1999 Jul
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/2944.796314

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abstract = "A new medical fiber laser oscillating at two useful wavelengths (3 and 2 μm) is reported. We have demonstrated highly efficient and high-power continuous-wave cascade oscillation at room temperature with a holmium ion-doped fluoride glass fiber laser pumped with a 1.15-μm fiber Raman laser. The simultaneous oscillation wavelengths were 3 and 2 μm, and their combined output power was 3.0 W with a slope efficiency of 65%. To our best knowledge, this is the first achievement of watt-level-output power in the mid-infrared region with ZrF 4-BaF 2-LaF 3-AlF 3-NaF (ZBLAN) glass fiber. In experiments to evaluate potential for medical applications, we tested the two-wavelength beam as a laser surgical knife on soft rabbit tissues and demonstrated that it had strong cutting capability, and that the coagulation layer thickness could be controlled by varying the power ratio of the two-wavelength laser.",

author = "Tetsumi Sumiyoshi and Hitoshi Sekita and Tsunenori Arai and Shunichi Sato and Miya Ishihara and Makoto Kikuchi",

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AU - Sumiyoshi, Tetsumi

AU - Sekita, Hitoshi

AU - Arai, Tsunenori

AU - Sato, Shunichi

AU - Ishihara, Miya

AU - Kikuchi, Makoto

PY - 1999/7

Y1 - 1999/7

N2 - A new medical fiber laser oscillating at two useful wavelengths (3 and 2 μm) is reported. We have demonstrated highly efficient and high-power continuous-wave cascade oscillation at room temperature with a holmium ion-doped fluoride glass fiber laser pumped with a 1.15-μm fiber Raman laser. The simultaneous oscillation wavelengths were 3 and 2 μm, and their combined output power was 3.0 W with a slope efficiency of 65%. To our best knowledge, this is the first achievement of watt-level-output power in the mid-infrared region with ZrF 4-BaF 2-LaF 3-AlF 3-NaF (ZBLAN) glass fiber. In experiments to evaluate potential for medical applications, we tested the two-wavelength beam as a laser surgical knife on soft rabbit tissues and demonstrated that it had strong cutting capability, and that the coagulation layer thickness could be controlled by varying the power ratio of the two-wavelength laser.

AB - A new medical fiber laser oscillating at two useful wavelengths (3 and 2 μm) is reported. We have demonstrated highly efficient and high-power continuous-wave cascade oscillation at room temperature with a holmium ion-doped fluoride glass fiber laser pumped with a 1.15-μm fiber Raman laser. The simultaneous oscillation wavelengths were 3 and 2 μm, and their combined output power was 3.0 W with a slope efficiency of 65%. To our best knowledge, this is the first achievement of watt-level-output power in the mid-infrared region with ZrF 4-BaF 2-LaF 3-AlF 3-NaF (ZBLAN) glass fiber. In experiments to evaluate potential for medical applications, we tested the two-wavelength beam as a laser surgical knife on soft rabbit tissues and demonstrated that it had strong cutting capability, and that the coagulation layer thickness could be controlled by varying the power ratio of the two-wavelength laser.

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High-power continuous-wave 3- and 2-μm cascade Ho ³⁺: ZBLAN fiber laser and its medical applications

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