VCSEL line-beam module for LiDAR applications

Yingmin Fan; Dandan Zhou; Hongtao Chong; Bin Zhao; Peng Wang; Ke Yuan; Chung-en Zah; Xingsheng Liu

doi:10.1117/12.2601496

9 October 2021 VCSEL line-beam module for LiDAR applications

Yingmin Fan, Dandan Zhou, Hongtao Chong, Bin Zhao, Peng Wang, Ke Yuan, Chung-en Zah, Xingsheng Liu

Proceedings Volume 11891, Semiconductor Lasers and Applications XI; 118910H (2021) https://doi.org/10.1117/12.2601496
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Abstract

Due to the maturity of VCSEL supply chain promoted by the VCSEL applications in smart phones, and the increasing peak power of multi-junction VCSEL chip，VCSELs are considered to have great advantages and potential as the transmitter light sources of automotive low-cost LIDAR devices. Here we introduce a kind of VCSEL line-beam module with unique optical shaping design for LiDAR applications. The module has a uniform line beam with a peak power larger than 200W, a pulse width of 4ns, a divergence angle of 0.12° @ 1/e2, and the vertical axis intensity uniformity is better than 80%. The experimental data showed that over a wide temperature range from - 40 °C to 110 °C the power variation of the line beam module is less than 20%, the variation of horizontal divergence angle is less than 5%, and the temperature drift coefficient is 0.066nm/°C, which greatly reduces the performance requirements of the receiver detector for the Lidar system. In addition, we introduce a prototype of new line-beam modules with peak power higer than 1000W we are developing, which can meet further requirement of long-distance LiDAR system.

Citation Download Citation

Yingmin Fan, Dandan Zhou, Hongtao Chong, Bin Zhao, Peng Wang, Ke Yuan, Chung-en Zah, and Xingsheng Liu "VCSEL line-beam module for LiDAR applications", Proc. SPIE 11891, Semiconductor Lasers and Applications XI, 118910H (9 October 2021); https://doi.org/10.1117/12.2601496

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KEYWORDS

Vertical cavity surface emitting lasers

LIDAR

Temperature metrology

Packaging

Optical design

Light sources

Transmitters

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