Technology, Process and Cost
GaAs Multi-Junction VCSEL from Lumentum and OSRAM
By Yole SystemPlus —
Comparison of the 2 firsts multi-junction VCSEL for LIDAR with analyze of the technology choices of OSRAM and Lumentum.
SPR24850
Overview / Introduction
- Executive Summary
- Reverse Costing Methodology
- dToF Proximity Sensing
- Market and Context
- Glossary
Company Profile
- Lumentum
- Ams Osram
- Hesai
- Velodyne
- Supply Chain
Physical Analysis
- Summary
- Hesai AT128 LIDAR
- Teardown
- Lumentum VCSEL
- View and Dimensions
- Cross-Section
- Process Summary
- Lumentum VCSEL comparison
- Velarray H800 LIDAR
- Teardown
- Osram VCSEL
- View and Dimensions
- Cross-Section
- Process Summary
- Osram VCSEL comparison
- Lumentum – Osram comparison
Manufacturing Process Flow
- Lumentum VCSEL Fab Units & Process
- Osram VCSEL Fab Units & Process
Cost Analysis
- Yields Explanation & Hypotheses
- Lumentum VCSEL
- VCSEL Laser Epitaxy Costs
- VCSEL Laser Front-End Costs
- VCSEL Laser Back-End Costs
- VCSEL Laser Die Cost
- Osram VCSEL
- VCSEL Laser Epitaxy Costs
- VCSEL Laser Front-End Costs
- VCSEL Laser Back-End Costs
- VCSEL Laser Die Cost
- Cost Comparison
Feedback
Related Products
About Yole Group
The multi-junction VCSELs are coming to the market. Their higher brightness than the single junction VCSELs opens the door to new functions such as automotive LIDAR. Yole Group found multi-junction VCSELs in two automotive LIDARs, the Velodyne H800 and in the Hesai AT128. The two LIDARs are very different: for the Hesai, each Lumentum’s VCSEL die generates one point/channel of the far-field Lidar and the Velodyne or the Osram’s VCSEL dies are combined to illuminate the scene in a flash.
The lower cost of the VCSEL die than the standard Edge Emitting Laser allowed Hesai to develop a Lidar with 128 channels/VCSELs while the other automotive lidar with EEL only have between 4 and 8 channels/EELs. This solution allow an ultra-high resolution scanning.
The Velarray H800 developed by Velodyne, one of the leaders of the lidar market. It is a 3D laser scanner capable of identifying objects and measuring the distance in any environment with a far-field LIDAR part based on EEL laser and a near-field LIDAR based on VCSEL dies.
Lumentum and Osram have developed a very different VCSEL structure dedicated to two different LIDAR technologies with very different beam diffusion and wideband diffusion needs.
This report conducts a detailed physical analysis, including teardown of the two LIDAR, cross-sectional analysis, circuit delayering, and scanning electron microscopy for the VCSEL dies from Lumentum and Osram. This approach determines the component structures and estimates the manufacturing processes used to make the VCSEL. This information combined with supply chain analysis allows us to calculate the costs of each production step and estimate the final selling price of the module.
Moreover, we compare the Lumentum’s 5-junction VCSEL with a Lumentum’s single-junction VCSEL to see the difference. The Osram’s 5-junction VCSEL is also compared with a Osram’s 1-junction. And finally, we compare the Lumentum and Osram, 5-junction VCSEL.
- Velodyne
- Ouster
- Osram
- ams
- Hesai
- Lumentum
- IQE
Key Features
- Detailed photos
- Precise measurements
- Die analysis
- Package analysis
- Materials analysis
- Manufacturing process flow
- Supply chain evaluation
- Manufacturing cost analysis
- Physical Comparisons
- Technical Comparisons
- Cost Comparisons
What's New?
- First multi-junction VCSEL used in Automotive LIDARs
- New technologies from market's leaders
- Lumentum and Osram
Product Objetives
- Show the technologies of the future VCSEL and mainly the epitaxy structure with the multi-junction structure from the two main actors, Lumentum and OSRAM
- Show the integration of VCSELs in two very different automotive LIDAR
- Comparison between the new technologies of the two leaders on the market