Modal gain and confinement factors in top- and bottom-emitting photonic-crystal VCSEL

Tomasz Czyszanowski, M. Dems, Hugo Thienpont, Krassimir Panayotov

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We investigate the modal characteristics of a phosphide photonic-crystal vertical-cavity surface-emitting diode laser (VCSEL) by using the three-dimensional, full vectorial plane wave admittance method. A single-defect, photonic crystal is defined as a regular, hexagonal net of holes with varying depths. The modal gain and confinement factors are compared for two VCSEL structures: with emission either through the DBR with the photonic crystal or through the DBR free of photonic crystal. Significant improvement in the beam quality is demonstrated for the second design.
Original languageEnglish
Pages (from-to)85102
Number of pages1
JournalJ. Phys. D-Appl. Phys
Volume41
Publication statusPublished - 2008

Keywords

  • VERTICAL-CAVITY; MODES; LASERS; DEPTH

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