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75W high optical output laser diode for LiDAR

ROHM has developed a 75W high optical output laser diode, the RLD90QZW3, for applications in the industrial equipment and consumer sectors that incorporate LiDAR (Light Detection and Ranging) for distance measurement and spatial recognition.

The RLD90QZW3 is a 75W infrared high optical output laser diode designed for LiDAR used in distance measurement and spatial recognition in 3D ToF (Time of Flight) systems.

Leveraging original device development technology ROHM has been able to achieve an emission width of 225µm at equivalent optical output. This is 22% narrower than conventional products, improving beam characteristics.

At the same time, uniform emission intensity together with low temperature dependence of the laser wavelength ensure stable performance – contributing to higher accuracy and expand longer distances in various LiDAR applications.

In addition, a power conversion efficiency (which is at trade-off with narrow emission width) of 21%, the same as standard products (at a forward current of 24A and 75W output), enables use without an increased power consumption.

A broad range of design support data is also from ROHM’s website, including optical circuit simulation models and application notes on drive circuit design. This is necessary for integration and evaluation that supports quick market introduction.

ROHM is currently developing even higher output 120W laser diodes for the automotive sector (AEC-Q102 qualified).

Author
Neil Tyler

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