Comparison of germanium oxide fibers with silica and sapphire fiber tips for transmission of erbium: YAG laser radiation.
Comparison of germanium oxide fibers with silica and sapphire fiber tips for transmission of erbium: YAG laser radiation.
复制标题
用于传输铒：YAG 激光辐射的氧化锗光纤与二氧化硅和蓝宝石光纤尖端的比较。
DOI：
10.1002/lsm.20382
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发表时间：
2006
影响因子：
2.4
通讯作者：
Fried,NathanielM
中科院分区：
文献类型：
--
作者：
Polletto,TravisJ;Ngo,AnthonyK;Tchapyjnikov,Alexei;Levin,Ken;Tran,Danh;Fried,NathanielM
背景和目的由于缺乏合适的光纤输送系统，限制了Er：YAG激光器的内窥镜应用。研究设计/材料与方法Er：YAG激光辐射波长为2.94µm，脉冲长度为300微秒，脉冲能量为5~1360 mJ，脉冲重复频率为3~10 Hz，经过1 m长1 cm长的氧化锗光纤，结果通过氧化锗/蓝宝石光纤的透过率为65±5%，而氧化锗/石英光纤的透过率为55±4%(P<；0.05)。混杂纤维的损伤阈值分别为30 9±4 4mJ和12 6±43mJ(n= 7纤维)(P<0 0 5)。通过光纤传输的最高脉冲能量分别为700mJ和220mJ。结论改进了主干光纤和光纤尖端2.94µm的折射率匹配，提高了氧化锗/蓝宝石光纤的传输阈值和损伤阈值。氧化锗/蓝宝石光纤可能代表了一种很有前途的中红外光纤输送系统，用于要求灵活、生物兼容和坚固的光纤输送系统用于接触性组织消融的Er：YAG激光器的内窥镜应用。激光外科医生。38：787-791,2006。©2006 Wiley-Liss，Inc.
Background and ObjectivesEndoscopic applications of the Erbium:YAG laser have been limited due to the lack of a suitable optical fiber delivery system. The purpose of this study was to compare the transmission of Er:YAG laser radiation through germanium oxide trunk fibers with silica and sapphire fiber tips for potential use in contact tissue ablation during endoscopy.Study Design/Materials and MethodsEr:YAG laser radiation with a wavelength of 2.94 µm, pulse length of 300 microseconds, pulse energies from 5 to 1,360 mJ, coupled into pulse repetition rates of 3–10 Hz, was through 1‐m‐long germanium oxide fibers with either 1‐cm‐long, 550‐µm‐diameter silica or sapphire tips.ResultsTransmission through the germanium oxide/sapphire fibers measured 65±5% compared with 55±4% for the germanium oxide/silica fibers (P<0.05). The damage threshold for the hybrid fibers averaged 309± 44 mJ and 126±43 mJ, respectively (n= 7 fibers each) (P<0.05). The highest pulse energies transmitted through the fibers were 700 mJ and 220 mJ, respectively.ConclusionsImproved index‐matching of the trunk fiber and fiber tip at 2.94 µm resulted in higher transmission and damage thresholds for the germanium oxide/sapphire fibers. The germanium oxide/sapphire fiber may represent a promising mid‐infrared optical fiber delivery system for use in endoscopic applications of the Er:YAG laser requiring a flexible, biocompatible, and robust fiber delivery system for contact tissue ablation. Lasers Surg. Med. 38:787–791, 2006. © 2006 Wiley‐Liss, Inc.