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定制氟化物玻璃中的超快激光写入波导：中红外集成光子器件的一项使能技术。

Ultrafast laser inscribed waveguides in tailored fluoride glasses: an enabling technology for mid-infrared integrated photonics devices.

作者信息

Fernandez Toney T, Johnston B, Gross S, Cozic S, Poulain M, Mahmodi H, Kabakova I, Withford M, Fuerbach A

机构信息

MQ Photonics Research Centre, School of Mathematical and Physical Sciences, Macquarie University, Sydney, NSW, 2109, Australia.

Le Verre Fluoré, 1 Rue Gabriel Voisin - Campus KerLann, 35170, Bruz, Brittany, France.

出版信息

Sci Rep. 2022 Aug 29;12(1):14674. doi: 10.1038/s41598-022-18701-y.

DOI:10.1038/s41598-022-18701-y
PMID:36038637
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9424227/
Abstract

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 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 μm wavelength mode with a mode-field diameter (MFD) as small as 12 μm 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.

摘要

氟化锆（ZBLAN）玻璃是基于光纤的中红外光子学中使用的标准材料，现已重新设计，以通过飞秒激光直写制造高折射率对比度的低损耗波导。我们证明，与纯ZBLAN相比，在超快激光写入过程中，混合锆/铪（Z/HBLAN）玻璃中可诱导出接近10的正折射率变化，并表明这可以用由具有对比极化率的两种玻璃形成剂的存在驱动的电子云畸变效应来解释。已经成功制造出了支持波长为3.1μm、模式场直径（MFD）小至12μm的良好限制模式的高数值孔径（NA）I型波导。这些发现为制造可轻松与现有ZBLAN光纤尾纤连接的中红外集成光子器件打开了大门。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/6bd987e3e605/41598_2022_18701_Fig10_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/dceaa33ab59f/41598_2022_18701_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/6bd987e3e605/41598_2022_18701_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/ef77e8d3f390/41598_2022_18701_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/5f3b0b0d59f4/41598_2022_18701_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/8fabfc55931c/41598_2022_18701_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/c170114d9401/41598_2022_18701_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/113718c8c340/41598_2022_18701_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/e0a97fbc1406/41598_2022_18701_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/c6b59754d904/41598_2022_18701_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/86860decf288/41598_2022_18701_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/dceaa33ab59f/41598_2022_18701_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c2e2/9424227/6bd987e3e605/41598_2022_18701_Fig10_HTML.jpg

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本文引用的文献

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