Pulsed laser diodes offer more power for LiDAR

This effect was achieved by a further development of the multi-junction technology, in which two V-grooves are embedded in the chip’s surface parallel to the resonator. These so-called “trenches” prevent the formation of interfering lateral modes. The company uses this process for multi-junction PLDs with a wavelength of 905nm.

In pulsed laser diodes, higher efficiency means more laser power at the same current input. This can, for example, increase the range of LiDAR systems. If the method is applied to arrays, each individual element can be controlled separately, which opens up new possibilities for system developers. 

LASER COMPONENTS Canada produces high power pulsed laser diodes (PLDs) at 905nm. The AlGaAs structure of the 905 series allows for high reliability and temperature stability; it also achieves the best beam characteristics. These 905nm PLDs are available in a TO-18, 5.6mm, 9mm, or 8-32 Coax housing as well as a chip on a ceramic submount. Customer-specific arrays and PLDs with other wavelengths are also available on request.

These laser diodes are used in range finding, speed monitoring, laser radars, security scanners, and laser light curtains or in testing and measurement systems.