论文标题
量身定制的氟化物眼镜中的超快激光刻有波导：一种适用于中红外集成光子设备的技术
Ultrafast laser inscribed waveguides in tailored fluoride glasses: An enabling technology for mid-infrared integrated photonics devices
论文作者
论文摘要
氟化锆（ZBLAN）玻璃是基于纤维的中红外光子学中使用的标准材料，已重新设计，以通过飞秒激光直接写作来制造高指控对比的高索引对比度低损失波导。我们证明，与纯Zblan相反，在超快激光铭文中，可以在混合锆/hafnium（z/hblan）玻璃杯中引起的近乎10 $^{ - 2} $的正变化，并表明这可以通过与两种玻璃形式相反的玻璃形式的驱动的电子云造成效应来解释。高数值孔径（NA）型波导支持良好的3.1 $ $ M $ M波长模式，其模式场直径（MFD）很小至12 $μ$ m，已成功制造出来。这些发现为制造中红外的集成光子设备打开了大门，这些光子设备可以很容易地与现有的ZBLAN纤维靠近。
Zirconium fluoride (ZBLAN) glass, the standard material used in fiber-based mid-infrared photonics, has been re-designed to enable the fabrication of high index-contrast low-loss waveguides via femtosecond laser direct writing. We demonstrate that in contrast to pure ZBLAN, a positive index change of close to 10$^{-2}$ can be induced in hybrid zirconium/hafnium (Z/HBLAN) glasses during ultrafast laser inscription and show that this can be explained by an electron cloud distortion effect that is driven by the existence of two glass formers with contrasting polarizability. High numerical aperture (NA) type-I waveguides that support a well confined 3.1 $μ$m wavelength mode with a mode-field diameter (MFD) as small as 12 $μ$m have successfully been fabricated. These findings open the door for the fabrication of mid-infrared integrated photonic devices that can readily be pigtailed to existing ZBLAN fibers.
