Overview

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 allows ROHM to achieve an unprecedented 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. Moreover, 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.

Key Features

1. The industry’s narrowest emission width (225μm) contributes to longer range and greater accuracy

The RLD90QZW3 leverages original patented laser diode device development technology to achieve high 75W output for LiDAR along with the narrowest emission width (225μm) on the market. High density emission translates to superior beam performance. What’s more, in addition to successfully achieving uniform emission intensity across the entire emission width, the temperature dependence of the laser wavelength is extremely low at 0.15nm/°C, reducing susceptibility to temperature changes to ensure stable performance.
As a result, compared to standard products (emission width: 290μm, temperature dependence: 0.25nm/°C) with the same optical output power, emission width and temperature dependence have been decreased 22% and 40%, respectively, providing longer ranging in LiDAR applications as well as higher accuracy at standard distances.

2. Equivalent power-optical conversion efficiency (PCE) allows for worry-free use without increasing power consumption

Patented technology is used to achieve the industry’s narrowest width in the same optical output class while delivering equivalent power conversion efficiency (which is in a contrary relationship) as standard products (PCE: 21% at 24A I,F, 75W output). This ensures worry-free use without increasing power consumption.

3. Comprehensive support enables quick market introduction

A broad range of design support data is also available on ROHM’s website free of charge, including simulation data (SPICE models, Ray data), board development data, and application notes on drive circuit design necessary for integration and evaluation that supports quick market introduction. Click on the URL below for more information.