Multi-junction lasers for LiDAR applications

Philipp Staudinger; Wolfgang Pallmann; Sujoy Paul; Ludovic Marigo; Stephanie Marigo; Julien Boucart; Lukas Mutter; Jürgen Müller

doi:10.1117/12.2655771

14 March 2023 Multi-junction lasers for LiDAR applications

Philipp Staudinger, Wolfgang Pallmann, Sujoy Paul, Ludovic Marigo, Stephanie Marigo, Julien Boucart, Lukas Mutter, Jürgen Müller

Author Affiliations +

Proceedings Volume 12403, High-Power Diode Laser Technology XXI; 1240303 (2023) https://doi.org/10.1117/12.2655771
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

Stacking of multiple laser junctions within one device structure enables significantly higher output powers per mm² device size than in conventional diode lasers. This technology makes edge emitting lasers (EEL) and VCSEL favorable for LiDAR applications. In this paper, we show our current performance of multi-junction EEL and VCSEL for industrial and automotive LiDAR applications. We demonstrate output power densities exceeding 1.2 kW/mm² from a VCSEL array as well as output powers of 285 W from an EEL with a footprint of only 400x600 μm². In addition, we propose a solution for the spectral shift in EEL using a wavelength stabilization technology achieving 0.04 nm/K on average in a temperature range of -35°C to 105°C.

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Citation Download Citation

Philipp Staudinger, Wolfgang Pallmann, Sujoy Paul, Ludovic Marigo, Stephanie Marigo, Julien Boucart, Lukas Mutter, and Jürgen Müller "Multi-junction lasers for LiDAR applications", Proc. SPIE 12403, High-Power Diode Laser Technology XXI, 1240303 (14 March 2023); https://doi.org/10.1117/12.2655771

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