Enhancement of quantum cascade laser intersubband transitions via coupling to resonant discrete photonic modes of subwavelength gratings

Marcin Motyka; Monika Mikulicz; Michal Rygala; Tristan Smolka; Mikolaj Janczak; Mikolaj Badura; Adriana Lozinska; Adriana Wolf; Monika Emmerling; Beata Sciana; Sven Höfling; Tomasz Czyszanowski; Grzegorz Sek

doi:10.1117/12.3001692

13 March 2024 Enhancement of quantum cascade laser intersubband transitions via coupling to resonant discrete photonic modes of subwavelength gratings

Marcin Motyka, Monika Mikulicz, Michal Rygala, Tristan Smolka, Mikolaj Janczak, Mikolaj Badura, Adriana Lozinska, Adriana Wolf, Monika Emmerling, Beata Sciana, Sven Höfling, Tomasz Czyszanowski, Grzegorz Sek

Author Affiliations +

Proceedings Volume PC12906, Light-Emitting Devices, Materials, and Applications XXVIII; PC129060K (2024) https://doi.org/10.1117/12.3001692
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

We present an optical spectroscopic study of InGaAs/AlInAs active region of quantum cascade lasers grown by low pressure metal organic vapor phase epitaxy combined with subwavelength gratings fabricated by reactive ion etching. Fourier-transformed photoluminescence measurements were used to compare the emission properties of structures before and after processing the gratings. Our results demonstrate a significant increase of the photoluminescence intensity related to intersubband transitions in the mid-infrared, which is attributed to coupling with the grating modes via so called photonic Fano resonances. Our findings demonstrate a promising method for enhancing the emission in optoelectronic devices operating in a broad range of application-relevant infrared.

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Marcin Motyka, Monika Mikulicz, Michal Rygala, Tristan Smolka, Mikolaj Janczak, Mikolaj Badura, Adriana Lozinska, Adriana Wolf, Monika Emmerling, Beata Sciana, Sven Höfling, Tomasz Czyszanowski, and Grzegorz Sek "Enhancement of quantum cascade laser intersubband transitions via coupling to resonant discrete photonic modes of subwavelength gratings", Proc. SPIE PC12906, Light-Emitting Devices, Materials, and Applications XXVIII, PC129060K (13 March 2024); https://doi.org/10.1117/12.3001692

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