Demonstration of Hybrid High-Q Hexagonal Boron Nitride Microresonators

Authors
Das, AnustupLee DongjunShandilya, Prasoon K.Kim, SejeongKang, GuminLake, David P.Behera, BishnupadaSukachev, DenisAharonovich, IgorLee, Jung-HyunPark, JaehyunBarclay, Paul E.
Issue Date
2021-10
Publisher
AMER CHEMICAL SOC
Citation
ACS PHOTONICS, v.8, no.10, pp.3027 - 3033
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 x 10(5) 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.
Keywords
MICRODISK RESONATORS; nanophotonics; whispering gallery mode; resonators; 2D material; optical absorption; hybrid devices; chemical vapor deposition
ISSN
2330-4022
URI
https://pubs.kist.re.kr/handle/201004/116322
DOI
10.1021/acsphotonics.1c00973
Appears in Collections:
KIST Article > 2021
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