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Excelitas Introduces Pulsed Laser Diode Array For LiDAR

High-resolution array enables more efficient, longer range and lower cost designs


Excelitas Technologies, a US photonics company, has introduced a 1X4 pulsed laser diode array for LiDAR applications. The device will debut at Photonics West in San Francisco, CA, January 31st to February 2, 2017.

The new array combines Excelitas' multi-cavity laser chip technology with small form-factor surface mount device (SMD) packaging for applications requiring high reliability such as autonomous vehicles and drones.

"Excelitas is actively involved in LiDAR for autonomous vehicles, so we are excited to announce the new 1X4 Pulsed Laser Diode Array," said Denis Boudreau, product leader at Excelitas Technologies. "This new laser array combines multi-cavity lasers and SMD packaging capabilities to address OEM design engineers' need for a high-performance, customisable solution that enables the development of next-generation LiDAR systems."

Unlike single-pixel lasers, the 1X4 linear configuration enables each pixel to be situated in very close proximity to its neighbour, according to the company, minimising space requirements in the assembly and enabling the use of smaller, less costly optical components. It is also fully compatible with SMD pick-and-place and reflow soldering equipment, allowing it to integrate into high-volume, low-cost assembly lines.

Each laser pixel can have up to four emitting stripes, enabling very high per-channel optical power levels in excess of 85 W for long-range detection with minimal power consumption, says Excelitas. These lasers can sustain large reverse voltage levels, with rise times of less than 5ns that can be achieved with proper drive electronics which can also be provided by the company.

The standard 1X4 array can be customised to meet each customer's optical system requirements. Variables such as the number of elements, element spacing, stripe width, channel power output and package footprint can be adjusted to enable minimised losses, longer range detection and reduced power consumption.

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