Demonstration of Hybrid High-Q Hexagonal Boron Nitride Microresonators,ACS Photonics

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Demonstration of Hybrid High-Q Hexagonal Boron Nitride Microresonators
ACS Photonics ( IF 6.5 ) Pub Date : 2021-09-30 , DOI: 10.1021/acsphotonics.1c00973
Anustup Das ₁ , Dong Jun Lee _{2,

3} , Prasoon K. Shandilya ₁ , Sejeong Kim _{4,

5} , Gumin Kang ₆ , David P. Lake ₁ , Bishnupada Behera ₁ , Denis Sukachev ₁ , Igor Aharonovich _{4,

5} , Jung-Hyun Lee ₃ , Jaehyun Park ₂ , Paul E. Barclay ₁

Affiliation

Hexagonal boron nitride (hBN) is a wide bandgap van der Waals material that is emerging as a powerful platform for quantum optics and nanophotonics. In this work, we demonstrate whispering gallery mode silica microresonators hybridized with thin layers of hBN that exhibit high intrinsic optical quality factor >7 × 10⁵ and a linear absorption coefficient of 9.5 cm^–1. Measurements of the effect of hBN thickness on optical Q and comparison with a theoretical model allows the linear optical absorption coefficient of the hBN films to be estimated. These high-Q devices will be useful for applications in quantum and nonlinear optics, and their hybridized geometry provides a sensitive platform for evaluating losses in hBN and other 2D materials.

中文翻译：

混合高 Q 六方氮化硼微谐振器的演示

六方氮化硼 (hBN) 是一种宽带隙范德华材料，正在成为量子光学和纳米光子学的强大平台。在这项工作中，我们展示了与 hBN 薄层混合的回音壁模式二氧化硅微谐振器，具有 >7 × 10 ^{5 的}高固有光学品质因数和 9.5 cm ^–1的线性吸收系数。测量 hBN 厚度对光学Q 的影响并与理论模型进行比较，可以估计 hBN 薄膜的线性光学吸收系数。这些高Q 器件将可用于量子和非线性光学应用，它们的混合几何形状为评估 hBN 和其他 2D 材料的损耗提供了一个敏感的平台。

更新日期：2021-10-20

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