Distributed feedback cavity optimization of thin film lasers using deep-UV lithography defined high-quality gratings

Nirav Annavarapu; Iakov Goldberg; Karim Elkhouly; Jan Genoe; Robert Gehlhaar; Paul Heremans

doi:10.1117/12.2676896

6 October 2023 Distributed feedback cavity optimization of thin film lasers using deep-UV lithography defined high-quality gratings

Nirav Annavarapu, Iakov Goldberg, Karim Elkhouly, Jan Genoe, Robert Gehlhaar, Paul Heremans

Author Affiliations +

Proceedings Volume PC12659, Organic and Hybrid Light Emitting Materials and Devices XXVII; PC1265913 (2023) https://doi.org/10.1117/12.2676896
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States

Conference Poster

Abstract

The design space of second-order distributed feedback (DFB) resonators is studied by exciting lasing from a lead halide perovskite film over high-quality, rectangular gratings fabricated in a 200mm fab. The dependence of the lasing threshold on the physical parameters of the grating are systematically studied and modelled. This model is subsequently applied to study the cavity size optimization which is relevant for scaled, electrically pumped devices. We elaborate our design strategy, and demonstrate optically pumped lasing from a cavity as short as 50 micrometers, without significantly raising the lasing threshold.

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Nirav Annavarapu, Iakov Goldberg, Karim Elkhouly, Jan Genoe, Robert Gehlhaar, and Paul Heremans "Distributed feedback cavity optimization of thin film lasers using deep-UV lithography defined high-quality gratings", Proc. SPIE PC12659, Organic and Hybrid Light Emitting Materials and Devices XXVII, PC1265913 (6 October 2023); https://doi.org/10.1117/12.2676896

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