Influence of Various Bottom DBR Designs on the Thermal Properties of Blue Semiconductor-Metal Subwavelength-Grating VCSELs

Materials

Tomasz Czyszanowski¹  Maciej Dems¹  Łukasz Piskorski¹  RobertP. Sarzała¹ 

[1] Institute of Physics, Lodz University of Technology, 90-924 Lodz, Poland;

关键词: vertical-cavity surface-emitting lasers;    subwavelength gratings;    numerical simulations;   

DOI  :  10.3390/ma12193235

来源: DOAJ

【 摘 要 】

In this paper, we consider several designs for nitride-based vertical-cavity surface-emitting lasers (VCSELs) with a top semiconductor-metal subwavelength grating (SMSG) as the facet mirror. The constructions of the bottom distributed Bragg reflectors (DBRs) used in the VCSEL designs were inspired by devices demonstrated recently by several research groups. A multiparameter numerical analysis was performed, based on self-consistent thermal and electrical simulations. The results show that, in the case of small aperture VCSEL designs, dielectric-based DBRs with metallic or GaN channels enable equally efficient heat dissipation to designs with monolithically integrated DBRs. In the case of broad aperture designs enabled by SMSGs, monolithically integrated DBRs provide much more efficient heat dissipation in comparison to all other considered designs.

【 授权许可】

Unknown