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首页> 外文期刊>Optics Letters >Reduction of self-phase modulation in double-clad photonic crystal fiber for nonlinear optical endoscopy
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Reduction of self-phase modulation in double-clad photonic crystal fiber for nonlinear optical endoscopy

机译：减少用于非线性光学内窥镜的双包层光子晶体光纤中自相位调制

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摘要

Double-clad photonic crystal fiber and double-clad fiber have been widely used in multiphoton-excited fluorescence or second-harmonic generation (SHG) endoscopy. We provide a useful comparison of two fibers used in nonlinear optical microendoscopy. While a double-clad fiber is found to have a higher percentage of the output power from its core, which results in the efficient utilization of the power of the excitation laser, a double-clad photonic crystal fiber has a higher threshold of the nonlinearity, which effectively reduces the self-modulation effect and thus leads to a higher degree of polarization of the excitation beam. Consequently, the use of the double-clad photonic crystal fiber facilitates bright two-photon fluorescence imaging as well as polarized SHG imaging.
机译：双包层光子晶体光纤和双包层光纤已广泛用于多光子激发荧光或二次谐波产生（SHG）内窥镜检查中。我们提供了用于非线性光学显微内窥镜检查的两种纤维的有用比较。虽然发现双包层光纤的纤芯输出功率百分比较高，从而可以有效利用激发激光器的功率，但双包层光子晶体光纤的非线性阈值较高，这有效地降低了自调制效应，从而导致激发光束的偏振度更高。因此，双包层光子晶体光纤的使用促进了明亮的双光子荧光成像以及偏振SHG成像。

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