1.
Opt Express
; 12(5): 859-67, 2004 Mar 08.
Article
in English
| MEDLINE
| ID: mdl-19474897
ABSTRACT
Robust and tolerant single-transverse-mode photonic crystal GaInAs vertical-cavity surface-emitting lasers are fabricated and investigated. Triangular lattice patterns of rectangular air holes of various etch-depths are introduced in the top mirror. The stable single-transversemode operation is observed with a large margin of allowance in the etch depth (t = 2.5 +/- 0.6 microm). This stable mode selection mechanism is explained by the mode competition between the two lowest photonic crystal guided modes that are influenced by both the index guiding effect and the etchdepth dependent modal losses.