Study on Bottom Distributed Bragg Reflector Radius and Electric Aperture Radius on Performance Characteristics of...

Area of Science:

• Optics and Photonics
• Semiconductor Devices
• Materials Science

Background:

• Vertical-cavity surface-emitting lasers (VCSELs) are crucial optoelectronic devices.
• Nitride-based VCSELs offer potential for visible light emission.
• Optimization of mirror and aperture parameters is key to enhancing VCSEL performance.

Purpose of the Study:

• To numerically analyze the operational characteristics of a nitride-based VCSEL.
• To investigate the impact of dielectric bottom mirror size on VCSEL performance.
• To determine the effect of electrical aperture radius on laser output and thermal behavior.

Main Methods:

• Numerical analysis of a nitride-based VCSEL.
• Simulation of power-current-voltage (LIV) characteristics.
• Parametric study of dielectric bottom mirror dimensions and electrical aperture radius.

Main Results:

• The size of the dielectric bottom mirrors significantly influences VCSEL operation.
• Adjusting the electrical aperture radius affects laser performance and thermal management.
• Optimal selection of these parameters leads to reduced internal temperature.

Conclusions:

• Reduced internal temperature in VCSELs leads to a lower threshold current.
• Optimized design parameters enhance the optical power output of nitride-based VCSELs.
• This study provides insights for designing high-performance visible-light VCSELs.