2021/07/09 by Anustup Das, Das, Anustup, Dong Jun Lee +23
Engineering · Materials Science · Physics and Astronomy · #Advanced Fiber Laser Technologies #Applied Physics (physics.app-ph) #Diamond and Carbon-based Materials Research #FOS: Physical sciences #Optics (physics.optics) #Photonic and Optical Devices #physics.app-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.2107.04173
5 pages, 4 figures
arxiv created 2021/07/09 · openalex publication_date 2021/07/09 · arxiv updated 2021/07/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 epitaxially grown hBN that exhibit high optical quality factor > 7 × 105. 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.