Deep-ultraviolet stimulated emission from AlGaN/AlN multiple-quantum-wells on nano-patterned AlN/sapphire templates with reduced threshold power density
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2017.06.240
Abstract: Abstract We first report deep-ultraviolet (DUV) stimulated emission by optical pumping of AlGaN/AlN multiple-quantum-wells (MQWs) on nano-patterned AlN/sapphire (NP-AlN/sapphire) templates with significant threshold power density (Pth) reduction. Thanks to nanoscale lateral overgrowth on nano-holes patterns,… read more here.
Keywords: algan aln; sapphire; aln sapphire; deep ultraviolet ... See more keywords
Design and Characterization of High-Q SAW Resonators Based on the AlN/Sapphire Structure Intended for High-Temperature Wireless Sensor Applications
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2020.2978179
Abstract: Aluminium nitride piezoelectric thin films grown on sapphire are strong candidates for high-temperature surface acoustic wave (SAW) sensors, due to their thermal stability, large bandgap, high acoustic velocity and suitable electromechanical coupling. However, thin-film resonators… read more here.
Keywords: aln sapphire; quality factors; design; high temperature ... See more keywords
Self-frequency shift of AlN-on-sapphire Kerr solitons.
Sign Up to like & getrecommendations! Published in 2021 at "Optics letters"
DOI: 10.1364/ol.441696
Abstract: We study the self-frequency shift of continuously pumped Kerr solitons in AlN-on-sapphire microcavities with Raman gain bandwidths narrower than the cavity free-spectral range. Solitons are generated in ∼230GHz microcavities via high-order mode dispersion engineering. The… read more here.
Keywords: self frequency; kerr solitons; aln sapphire; frequency shift ... See more keywords
Two-Dimensional Electron Gas in Thin N-Polar GaN Channels on AlN on Sapphire Templates
Sign Up to like & getrecommendations! Published in 2024 at "Crystals"
DOI: 10.3390/cryst14090822
Abstract: We report on 2-dimensional electron gases realized in binary N-polar GaN channels on AlN on sapphire templates grown by metal–organic vapor phase epitaxy. The measured sheet carrier density of 3.8×1013 cm−2 is very close to… read more here.
Keywords: sapphire templates; dimensional electron; channels aln; aln sapphire ... See more keywords