Rohm is developing laser diodes for automotive LiDAR applications that are AEC-Q102 compliant.
Rohm has acquired certification under the IATF 16949 automotive quality management standard for both front-end and back-end processes at its manufacturing facilities and commercialization of the laser diodes for LiDAR is planned by the end of 2024.
This follows the launch of a 120W infrared laser diode for industrial and consumer applications such as automated guided vehicles and robot vacuum cleaners that is likely to form the basis of the automotive parts.
The design of the RLD90QZW8 reduces the temperature dependence of the laser wavelength by 66% to a band of 11.6nm (Ave. 0.10nm/°C) around the peak of 905nm. This makes it possible to narrow the bandpass filter while extending the detection range of the LiDAR for automotive applications..
The 120W laser diode has a uniform light intensity of 97% is achieved over the emission width of 270µm, representing a range of 264µm that contributes to higher resolution. Additional features include high power-to-light conversion efficiency (PCE) for efficient optical output that contributes to lower power consumption in LiDAR designs.
Rohm has also developed a reference design using the 150V EcoGaN HEMT and BD2311NVX series high speed gate drivers. Rohm also supplies simulation (SPICE) models, board development data, and application notes on drive circuit design necessary for integration and evaluation.