Triple Junction Laser Diode - autonomous vehicles
Featured Product from SemiNex Corporation

APPLICATIONS OF TRIPLE JUNCTION LASER DIODES
(I) LiDAR for autonomous vehicles and drones, and industrial applications
For the past ten years LiDAR manufacturers have taken two laser approaches for time-of-flight LiDAR systems: 905nm laser diodes or 1550nm fiber lasers. The 1550nm fiber lasers are impractical for mass market deployment because of their size, cost, and complexity. Typical time-of-flight LiDAR systems using multi-junction 905nm lasers are limited to a range of 100 meters due to a low eye-safety acceptable emission limits (AEL) of International Electrotechnical Commission (IEC) regulations. Neither of these past approaches meets the automotive industry goals of 200 meters, eye-safe, or cost effective LiDAR to enable mass deployment in high-speed autonomous vehicles.
The new SemiNex triple junction laser diode at 1550nm enables eye-safe, high-power, longer-range over 250m, lower cost LiDAR solutions for autonomous vehicles at high speed. It delivers 80X more photons, 27X stronger detection, and 3X longer detection distance compared to a 905nm laser diode in an automotive LiDAR. A major challenge with the existing LiDAR technology for autonomous vehicles has been to find a cost-effective semiconductor laser diode that can provide high peak power at eye-safe wavelengths for long range applications. Operating at 1550nm, the SemiNex Triple Junction laser diode provides 3X the peak power of a single emitter thus improving the resolution and penetration effectiveness in bad weather while remaining eye-safe. It can be operated at pulse widths between 2ns and 150ns at 200kHz to 400kHz pulse repetition rate.
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