GaN-based vertical-cavity surface-emitting lasers with AlInN/GaN distributed Bragg reflectors

Area of Science:

• Optoelectronics
• Semiconductor Lasers

Background:

• Gallium nitride (GaN)-based vertical-cavity surface-emitting lasers (VCSELs) are emerging optoelectronic devices.
• These lasers emit light in the violet to green spectral region.
• They utilize semiconductor-based distributed Bragg reflectors for optical feedback.

Purpose of the Study:

• To describe the current status and future prospects of GaN-based VCSELs.
• To evaluate their potential as next-generation light sources.
• To compare their development with established gallium arsenide (GaAs)-based infrared VCSELs.

Main Methods:

• Review of the current research and development status of GaN-based VCSELs.
• Analysis of device performance metrics and fabrication techniques.
• Comparative study with GaAs-based infrared VCSELs.

Main Results:

• GaN-based VCSELs offer potential for high-performance visible light emission.
• Challenges remain in achieving high efficiency and reliability compared to GaAs VCSELs.
• Significant progress has been made in device design and material growth.

Conclusions:

• GaN-based VCSELs are a promising technology for future displays and illumination.
• Further research is needed to overcome current limitations and achieve commercial viability.
• These devices could enable applications like retinal scanning displays and adaptive headlights.