Vertical-cavity surface-emitting lasers with incorporated photonic crystals for transverse mode control

P Ivanov, Y-L D Ho, Martin J. Cryan, P J Heard, D R E Snoswell, J M Rorison

Research output: Contribution to journalArticlepeer-review

Abstract

Existing problems in the development of vertical-cavity surface-emitting lasers with photonic crystals (PC-VCSELs) for transverse mode control are reviewed. The theoretical background of VCSELs with PCs incorporated within their top distributed Bragg reflector (DBR) (type I PC-VCSELs) and VCSELs with PCs incorporated within their cavity (type II PC-VCSELs) is introduced. Their fabrication using focused ion-beam (FIB) etching is discussed. It is shown that type I single-mode PC-VCSELs suffer from low optical power and poor small-signal modulation performance due to the reduction of the reflectivity of the top DBR introduced by the PC. The problem is expected to be reduced in type II PC-VCSELs that are being investigated now. One approach to the fabrication of type II PC-VCSELs is described.
Original languageEnglish
Article number094010
Number of pages11
JournalSemiconductor Science and Technology
Volume27
Issue number9
Early online date22 Aug 2012
DOIs
Publication statusPublished - 1 Sep 2012
Externally publishedYes

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