Nanophotonic nonlinear and laser devices exploiting bound states in the continuum

Min Soo Hwang, Kwang Yong Jeong, Jae Pil So, Kyoung Ho Kim, Hong Gyu Park

Research output: Contribution to journalReview articlepeer-review

3 Citations (Scopus)


The quality factor (Q), describing the rate of energy loss from a resonator, is a defining performance metric for nanophotonic devices. Suppressing cavity radiative losses enables strong nonlinear optical responses or low-power operation to be achieved. Exploiting long-lived, spatially-confined bound states in the continuum (BICs) has emerged from the numerous approaches considered as a promising route to boost nanophotonic Q factors. Initial research explored the formation mechanisms of various types of BICs, drawing parallels to topological physics. With these fundamentals now established, we review the recent application of BICs in passive and active nanophotonic devices.

Original languageEnglish
Article number106
JournalCommunications Physics
Issue number1
Publication statusPublished - 2022 Dec

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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