Abstract

The lasing spectra and thresholds of a selectively pumped photonic molecule composed of two microdisks is investigated using effective index approximation and full-wave 2-D electromagnetic equations. The lasing eigenvalue problem formulation is used to find modal frequencies and threshold values of material gain. The influence of the optical coupling between active and passive microdisks on the lasing eigenvalues and directionalities of emission is studied. It is shown that for strong coupling the effect of making one of the resonators passive leads to the doubling of the threshold.

© 2013 Optical Society of America

Lasing frequencies and thresholds of the dipole supermodes in an active microdisk concentrically coupled with a passive microring

Elena I. Smotrova, Trevor M. Benson, Phillip Sewell, Jiri Ctyroky, and Alexander I. Nosich
J. Opt. Soc. Am. A 25(11) 2884-2892 (2008)

Threshold reduction in a cyclic photonic molecule laser composed of identical microdisks with whispering-gallery modes

Elena I. Smotrova, Alexander I. Nosich, Trevor M. Benson, and Phillip Sewell
Opt. Lett. 31(7) 921-923 (2006)

Spectra, thresholds, and modal fields of a kite-shaped microcavity laser

Elena I. Smotrova, Victor Tsvirkun, Iryna Gozhyk, Clément Lafargue, Christian Ulysse, Melanie Lebental, and Alexander I. Nosich
J. Opt. Soc. Am. B 30(6) 1732-1742 (2013)

Whispering-gallery mode lasing from optically free-standing InGaN microdisks

Xuhui Zhang, Yuk Fai Cheung, Yiyun Zhang, and H. W. Choi
Opt. Lett. 39(19) 5614-5617 (2014)

Coupling of whispering-gallery modes in size-mismatched microdisk photonic molecules

Svetlana V. Boriskina
Opt. Lett. 32(11) 1557-1559 (2007)