Open AccessLarge mode splitting and lasing in optimally coupled photonic-crystal microcavities
Author(s) -
Kirill A. Atlasov,
A. Rudra,
B. Dwir,
E. Kapon
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.002619
Subject(s) - lasing threshold , photonic crystal , optics , coupling (piping) , optoelectronics , materials science , spontaneous emission , wavelength , modulation (music) , physics , laser , acoustics , metallurgy
Coupling of L-type photonic-crystal (PhC) cavities in a geometry that follows inherent cavity field distribution is exploited for demonstrating large mode splitting of up to ~10-20 nm (~15-30 meV) near 1 µm wavelength. This is much larger than the disorder-induced cavity detuning for conventional PhC technology, which ensures reproducible coupling. Furthermore, a microlaser based on such optimally coupled PhC cavities and incorporating quantum wire gain medium is demonstrated, with potential applications in fast switching and modulation.