Details

Autor(en) / Beteiligte

• Mikulicz, Monika
• Rygała, Michał
• Smołka, Tristan
• Janczak, Mikołaj
• Badura, Mikołaj
• Łozińska, Adriana
• Wolf, Adriana
• Emmerling, Monika
• Ściana, Beata
• Höfling, Sven
• Czyszanowski, Tomasz
• Sęk, Grzegorz
• Motyka, Marcin

Titel

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

Ist Teil von

• Optics express, 2023-07, Vol.31 (16), p.26898-26909

Erscheinungsjahr

2023

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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.