ROHM Develops "RLD90QZW3" 75W High Output Laser Diode for LiDAR

     The world-renowned semiconductor manufacturer ROHM has developed a high output power semiconductor laser diode "RLD90QZW3", which is very suitable for AGV*2 (unmanned guided vehicles) and service robots in the field of industrial equipment equipped with LiDAR*1 for ranging and space recognition. , sweeping robots and other applications in the field of consumer electronic equipment.

     In recent years, LiDAR, which can accurately measure distances and identify spaces, has become increasingly popular in a wide range of applications that require automated work, such as sweeping robots, AGVs, and self-driving cars. In this context, in order to detect information "farther", "more accurately" and "lower power consumption", higher requirements are placed on improving the performance of laser diodes as light sources.

     ROHM already has its own patented technology that enables narrower laser linewidths, helping LiDAR support longer distances and achieve higher accuracy. The 25W high output power laser diode "RLD90QZW5" has been mass-produced since 2019 and is increasingly used in applications mainly in the field of consumer electronics. This time, ROHM has developed a 75W high output laser diode "RLD90QZW3" in order to expand its application to the field of industrial equipment where the market is growing.

     "RLD90QZW3" is an infrared 75W high output power laser diode developed for LiDAR using 3D ToF system*3 for ranging and spatial recognition. Using ROHM's own component development technology, an ultra-narrow linewidth of 225µm has been achieved in a laser diode with the same output power in the industry. Compared with ordinary products with a line width of 290µm, the line width is narrowed by 22%, realizing high beam performance. At the same time, by making the luminous intensity more uniform and utilizing the low temperature dependence of the laser wavelength, high performance can be achieved stably, thus contributing to the realization of long-distance applications and higher accuracy of LiDAR in various environments. In addition, the photoelectric conversion efficiency, which has a trade-off relationship with the narrow line width, has also reached 21% of that of ordinary products (when the forward current is 24A and 75W output), so there is no need to worry about the increase in power consumption when using this product. .

     In addition, in order to support the rapid introduction of new products into the market, the ROHM official website also provides a wealth of design data required for evaluating and importing new products for free, including application guides for driving circuit design methods, circuit simulation and optical simulation. model etc.