journal article·2021-10-20

Demonstration of Hybrid High-Q Hexagonal Boron Nitride Microresonators

Anustup Das, Dong Jun Lee, Prasoon K. Shandilya, Sejeong Kim, Gumin Kang, David P. Lake, Bishnupada Behera, Denis Sukachev, Igor Aharonovich, Jung-Hyun Lee, Jaehyun Park, Paul E. Barclay

ACS Photonics· Volume 8· Issue 10
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Abstract

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.
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Research context

OpenAlex topics: Photonic and Optical Devices · Advanced Fiber Laser Technologies · Mechanical and Optical Resonators

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute for Quantum Science and Technology, University of Calgary, Calgary, Alberta T2N 1N4, Canada

Materials Architecturing Research Center, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea

Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea

School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, New South Wales 2007, Australia

ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), University of Technology Sydney, Ultimo, New South Wales 2007, Australia

Nanophotonics Research Centre, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea

Funding

Canada Foundation for Innovation · Ministry of Science and ICT, South Korea · Australian Research Council · Korea Institute of Science and Technology · Natural Sciences and Engineering Research Council of Canada · Alberta Innovates · Asian Office of Aerospace Research and Development · National Research Council Nanotechnology Research Centre

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