What question did this study set out to answer?

The study aims to simplify the fabrication process of second harmonic generation (SHG) devices using AlN/AlGaN superlattices.

April 1, 2026Materials Advances0 citationsOpen Access

Piezoelectrically-enhanced 230 nm far-UV second harmonic generation in a polarity-inversion-free AlN/AlGaN strained-layer superlattice channel waveguide

SMShahzeb MalikOsaka Gakuin University RMRyo MomosakiOsaka Gakuin University HHHiroto HondaOsaka Gakuin University

Key Points

The study aims to simplify the fabrication process of second harmonic generation (SHG) devices using AlN/AlGaN superlattices.
Grew AlN/AlGaN strained-layer superlattices (SLS) to create waveguides.
Measured wavelength spectra and power dependency of the generated light.
Successfully demonstrated far-UV emission from the SLS structure.
Confirmed the absence of polarity inversion in the SLS design.

Abstract

The primary purpose of growing AlN/AlGaN SLSs was to simplify the SHG device fabrication process. The wavelength spectra and power dependency confirms the first successful demonstration of far-UV emission from a polarity-inversion-free SLS structure.

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