کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
739410 | 1461642 | 2014 | 5 صفحه PDF | دانلود رایگان |

• We presented the self-planar mesa structure for improving VCSEL performances.
• VCSELs with the self-planar mesa enhanced the dissipation rate of heat.
• The series resistance of N-DBR was reduced by this mesa structure.
• Improved rollover current and output power was gained from experimental results.
We presented the self-planar mesa structure for improving the performances of 850-nm oxide-confined vertical cavity surface emitting lasers (VCSELs). By employing the self-planar mesa, the maximum output power was increased from 8 mW to more than 11 mW, and the maximum wall–plug efficiency was improved from 26% to 36% for the VCSEL with an oxide aperture size of 13 μm at 15 °C. The thermal resistance was decreased from 1.16 °C/mW to 0.94 °C/mW. Thermal simulations about different mesa structures were carried out. And the enhanced lateral heat dissipation and current diffusion within VCSELs was considered to be the main reason for improved performances.
Journal: Optics & Laser Technology - Volume 56, March 2014, Pages 343–347