Possibilities and limitations of optical fibers for the transmission of excimer laser radiation
Possibilities and limitations of optical fibers for the transmission of excimer laser radiation
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光纤传输准分子激光辐射的可能性和局限性
DOI：
10.1117/12.274289
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发表时间：
1997
期刊：
影响因子：
8.4
通讯作者：
K. Mann
中科院分区：
文献类型：
--
作者：
K. Klein;G. Hillrichs;P. Karlitschek;K. Mann
对于具有UV激光器的光纤传输系统，候选者主要是具有未掺杂的高OH二氧化硅芯和F掺杂的二氧化硅包层的光纤。然而，UV应用存在重要的限制：表面损伤、双光子吸收和操作期间的缺陷产生。在过去的两年中，已经开发出了具有显著减少的缺陷的紫外线改进的纤维。这种改善在248和193 nm处最明显，因为在这些临界波长处，诱导损耗受到在165 nm和215 nm处具有吸收最大值的主要宽带UV缺陷的强烈影响。我们将总结结果，包括主要参数的影响。此外，由于医疗和工业应用，308 nm波长的传输容量也很受关注。在此波长下，非线性的影响要小得多;然而，标准光纤中的诱导损耗仍然是一个重要因素。为了显示UV改进的光纤的优点，将首次更详细地描述在308 nm波长下的传输特性。
For fiber-delivery systems with UV-lasers the candidates are mainly optical fibers with an undoped high-OH silica core and a F-doped silica cladding. However, there re there important limits to UV-applications: surface damage, two- photon-absorption and defect-generation during operation. In the last two years, UV-improved fibers with significantly reduced defects have been developed. This improvement is most pronounced at 248 and 193 nm, because at these critical wavelengths the induced losses are strongly influences by the main broadband UV-defects with absorption maxima at 165 nm and 215 nm. We will summarize the results including the influence of the main parameters. In addition, the transmission capacity for the 308 nm wavelength is of interest due to medical and industrial applications. At this wavelength the influence of the nonlinearities is much lower; however, the induced losses in standard fibers are still an important factor. To show the advantages of the UV- improved fibers, the transmission characteristics at 308 nm wavelength will be described in more detail, for the first time.