Enhancement of spontaneous emission factor in selectively oxidized vertical-cavity lasers with double oxide layers

Yongzhen Huang

doi:10.1117/12.319605

19 August 1998 Enhancement of spontaneous emission factor in selectively oxidized vertical-cavity lasers with double oxide layers

Yongzhen Huang

Author Affiliations +

Proceedings Volume 3547, Semiconductor Lasers III; (1998) https://doi.org/10.1117/12.319605
Event: Photonics China '98, 1998, Beijing, China

Abstract

The behaviors of lateral propagating modes in the aperture and the oxidized regions are investigated numerically for selectively oxidized vertical-cavity surface-emitting lasers (VCSELs). The results show that the lateral propagating modes in the oxidized region are greatly affected by the oxide layer due to its low index, the modes are divergence for the VCSELs with sufficient thick double oxide layers. So the coupling between the modes in the aperture and oxidized regions is very weak, and we can expect that the lateral spontaneous emission is greatly affected in this case. Ignoring the contribution of the lateral spontaneous emission, we calculate spontaneous emission factor by counting the total number of the guided modes in selectively oxidized VCSELs with double oxide layers. The results agree very well with the reported measurements and are inversely proportional to the lateral index step.

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Yongzhen Huang "Enhancement of spontaneous emission factor in selectively oxidized vertical-cavity lasers with double oxide layers", Proc. SPIE 3547, Semiconductor Lasers III, (19 August 1998); https://doi.org/10.1117/12.319605

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