Understanding VCSELs
The vertical cavity surface emitting laser (VCSEL) has several advantages over its edge-emitting cousin. Its strengths include a higher modulation speed, on-wafer testing, and the emission of a symmetrical emission pattern that is oriented perpendicular to the surface. This form of emission is ideal for coupling into other optical components.
This emission pattern is also well suited for configuring multiple devices into a two-dimensional array. However, all these merits over edge-emitting lasers come at the expense of a more complex device architecture.
To produce a high performance VCSEL, the distributed Bragg reflector (DBR) is formed from alternating layers with a sufficiently high refractive index contrast in order to realize high levels of reflection. Engineers must also ensure that the conductivity of the mirrors is sufficiently high to prevent current injection into the active region from causing excessive ohmic heating.
EAG's development of advanced techniques for materials analysis has allowed them to provide comprehensive process development and failure analysis of VCSELs.
The proprietary PCOR-SIMS capabilities has opened up the SIMS technique so that it is no longer limited to impurity and dopant analyses of semiconductor materials.
Learn more about VCSELs and EAGs expertise in analyzing these complex structures using PCOR-SIMS by checking out the resources below. Contact us today to speak to an expert and to learn more about EAG’s proprietary PCOR-SIMS technique used to analyze VCSELs.
VCSEL Resources:
Recommended by LinkedIn
About EAG
When it comes to understanding the physical structure, chemical properties and performance of advanced materials and integrated circuitry, no other scientific services company offers the breadth of experience, diversity of analytical techniques or technical ingenuity of EAG Laboratories. We deliver multi-disciplinary, problem-solving expertise to help our customers accelerate innovation, ensure quality and safety, and protect intellectual property.
Whether you are seeking to speed time-to-market, solve manufacturing problems or ensure regulatory compliance, turn to EAG. We know how to bring the power of science to every phase of your product lifecycle.