Fig. 1: Brief timeline of passive and active bound states in the continuum (BICs).
From: Nanophotonic nonlinear and laser devices exploiting bound states in the continuum
Experimental demonstrations of optical BICs have been extensively reported since 2011. SHG stands for second-harmonic generation. Reprinted by permission from ref. 15, copyright 2011, reprinted by permission from ref. 16, copyright 2013, reprinted by permission from ref. 17, copyright 2017, reprinted by permission from ref. 18, copyright 2018, reprinted by permission from ref. 19, copyright 2018, reprinted by permission from ref. 20, copyright 2019, reprinted by permission from ref. 21, copyright 2019, reprinted by permission from ref. 22, copyright 2020, reprinted by permission from ref. 23, copyright 2020, reprinted by permission from ref. 24, copyright 2020, and reprinted by permission from ref. 25, copyright 2021.
