Title :
Photonic crystal heterostructure cavity lasers using kagome lattices
Author :
Giannopoulos, A.V. ; Long, C.M. ; Choquette, K.D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL
Abstract :
The lasing characteristics of a photonic crystal membrane heterostructure cavity that utilises a kagome type lattice is demonstrated. A heterostucture cavity is formed by interfacing two photonic crystals such that the dispersion maximum of the inner lattice falls within the photonic bandgap of the surrounding lattice. Feedback to slow Bloch modes allows for localisation of band edge modes and a reduction of in-plane losses. Singlemode lasing is observed in relatively large area lasers at 1550 nm.
Keywords :
laser cavity resonators; photonic band gap; photonic crystals; Bloch modes; band edge mode localisation; dispersion maximum; inner lattice; kagome lattices; photonic bandgap; photonic crystal heterostructure cavity lasers; wavelength 1550 nm;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20081063
