Triple-Junction Laser Diodes

What is a Triple-Junction Laser Diode?

Triple-junction laser diodes are an innovative class of semiconductor lasers that utilize three integrated semiconductor laser junctions. These diodes are designed to generate over 100 watts of peak power at 1550nm under pulsed conditions, delivering three times more optical power compared to a single junction laser diode with a 1W/A slope efficiency.

Learn More About Triple-Junction Laser Diodes

One key advantage of these diodes is their high wall plug efficiency, which can be twice as high at elevated driving currents compared to similar diodes in the market. This efficiency is primarily due to their low operating voltage.

These diodes are available in various configurations to cater to different customer requirements and applications. They offer a selection of aperture widths including 50μm, 95μm, 180μm, and 350μm, and standard cavity lengths of both 1.5mm and 2.5mm. Additionally, SemiNex provides these diodes in several packaging and submount configurations such as Chip-on-Carrier, TO9, and TO56.

Triple-junction laser diodes find extensive applications in areas such as LiDAR for autonomous vehicles and drones, industrial uses, and range-finding and targeting applications. For instance, the SemiNex triple junction laser diode at 1550nm provides an eye-safe, high-power, long-range (over 250m), and cost-effective LiDAR solution for high-speed autonomous vehicles. It delivers 80 times more photons, 27 times stronger detection, and 3 times longer detection distance compared to a 905nm laser diode in an automotive LiDAR.

Operating at 1550nm, the SemiNex triple junction device provides three times 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 2 ns and 100 ns at 200 kHz to 400 kHz pulse repetition rate.

Benefits

1. Can generate high-power output at 1550nm with QCW operation.
2. Deliver three times more optical power compared to a single junction laser with a 1W/A slope efficiency.
3. High wall plug efficiency, which can be twice as high at elevated driving currents compared to similar diodes.
4. Operate at a low voltage.
5. Available in various configurations, including different aperture widths and standard cavity lengths.
6. Used in a wide range of applications, including LiDAR for autonomous vehicles and drones, industrial uses, and range finding and targeting applications.
7. Provide an eye-safe, high-power, long-range (over 250m), and cost-effective LiDAR solution for high-speed autonomous vehicles.
8. Deliver 80 times more photons, 27 times stronger detection, and 3 times longer detection distance compared to a 905nm laser diode in an automotive LiDAR.
9. Improve the resolution and penetration effectiveness in bad weather while remaining eye-safe.
10. Can be operated at pulse widths between ≈ 10 ns and 150 ns