A new concept for spatially resolved coherent detection with vertically illuminated photodetectors targeting ranging applications

Pascal Rustige; Patrick Runge; Francisco M. Soares; Jan Krause; Martin Schell

doi:10.1117/12.2576323

5 March 2021 A new concept for spatially resolved coherent detection with vertically illuminated photodetectors targeting ranging applications

Pascal Rustige, Patrick Runge, Francisco M. Soares, Jan Krause, Martin Schell

Author Affiliations +

Proceedings Volume 11682, Optical Components and Materials XVIII; 1168206 (2021) https://doi.org/10.1117/12.2576323
Event: SPIE OPTO, 2021, Online Only

Abstract

A novel approach for coherent detection with double-side vertically illuminated photodetectors is presented. Signal and local oscillator (LO) are injected collinearly from opposite sides of the photodetector chip. As a result, no optical combiners are required and the concept inherently provides angular selective detection, as the relative angle between signal and LO has a strong influence on the generated RF power. These properties can be exploited for developing compact, solid-state receiver modules in single-channel and arrayed configurations for different sensing and imaging applications, e.g., coherent light detection and ranging (LiDAR).

Conference Presentation

Citation Download Citation

Pascal Rustige, Patrick Runge, Francisco M. Soares, Jan Krause, and Martin Schell "A new concept for spatially resolved coherent detection with vertically illuminated photodetectors targeting ranging applications", Proc. SPIE 11682, Optical Components and Materials XVIII, 1168206 (5 March 2021); https://doi.org/10.1117/12.2576323

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