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Demonstration of Hybrid High-Q Hexagonal Boron Nitride Microresonators
- Authors
- Das, Anustup; Lee, Dong Jun; Shandilya, Prasoon K.; Kim, Sejeong; Kang, Gumin; Lake, David P.; Behera, Bishnupada; Sukachev, Denis; Aharonovich, Igor; Lee, Jung-Hyun; Park, Jaehyun; Barclay, Paul E.
- Issue Date
- 20-10월-2021
- Publisher
- AMER CHEMICAL SOC
- Keywords
- 2D material; chemical vapor deposition; hybrid devices; nanophotonics; optical absorption; resonators; whispering gallery mode
- Citation
- ACS PHOTONICS, v.8, no.10, pp.3027 - 3033
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS PHOTONICS
- Volume
- 8
- Number
- 10
- Start Page
- 3027
- End Page
- 3033
- ISSN
- 2330-4022
- 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.
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