Abstract
Flat-band photonic lattices, i.e., arrays of waveguides or resonators displaying a flat Bloch band, offer new routes for light trapping and distortion-free imaging. Here it is shown that flat-band lattices can show stable and cooperative laser emission when optical gain is supplied to the system, despite the large degree of degeneracy of flat-band supermodes. By considering a quasi one-dimensional rhombic lattice of coupled semiconductor microrings, selective pumping of the outer sublattices can induce cooperative lasing in a supermode of the flat band.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Sebabrata Mukherjee and Robert R. Thomson
Opt. Lett. 42(12) 2243-2246 (2017)
Shiqiang Xia, Yi Hu, Daohong Song, Yuanyuan Zong, Liqin Tang, and Zhigang Chen
Opt. Lett. 41(7) 1435-1438 (2016)
Sebabrata Mukherjee and Robert R. Thomson
Opt. Lett. 40(23) 5443-5446 (2015)