具有良好光束质量的大模场光纤中高阶模含量的影响。

Implications of higher-order mode content in large mode area fibers with good beam quality.

作者信息

Wielandy Stephan

出版信息

Opt Express. 2007 Nov 12;15(23):15402-9. doi: 10.1364/oe.15.015402.

DOI:10.1364/oe.15.015402

PMID:19550825

Abstract

The impact of Higher-Order Mode content on beam quality in large mode area fibers supporting several guided modes is carefully investigated. It is shown that even excellent beam quality (M(2) < 1.1) in LMA fibers does not guarantee low HOM content, and that the presence of HOMs can lead to significant uncontrollable changes in beam quality, peak intensity, and pointing uncertainty that depend on the uncontrollable relative phase of the modes in the fiber.

摘要

高阶模成分对支持多种导模的大模场面积光纤中光束质量的影响得到了仔细研究。结果表明，即使大模场面积光纤中具有优异的光束质量（M² < 1.1）也不能保证低高阶模含量，并且高阶模的存在会导致光束质量、峰值强度和指向不确定性发生显著的不可控变化，这些变化取决于光纤中各模式不可控的相对相位。