Status of the growth and fabrication of AlGaN-based UV laser diodes for near and mid-UV wavelength

R Kirste, B Sarkar, P Reddy, Q Guo, R Collazo… - Journal of Materials …, 2021‏ - Springer
In this article, the development of mid-UV laser diodes based on the AlGaN materials system
is reviewed. The targeted wavelength for these lasers covers the range from 200 to 350 nm …

[HTML][HTML] Recent progress of electrically pumped AlGaN diode lasers in the UV-B and-C bands

SMN Hasan, W You, MSI Sumon, S Arafin - Photonics, 2021‏ - mdpi.com
The development of electrically pumped semiconductor diode lasers emitting at the
ultraviolet (UV)-B and-C spectral bands has been an active area of research over the past …

Room-temperature operation of AlGaN ultraviolet-B laser diode at 298 nm on lattice-relaxed Al0. 6Ga0. 4N/AlN/sapphire

K Sato, S Yasue, K Yamada, S Tanaka… - Applied Physics …, 2020‏ - iopscience.iop.org
An AlGaN ultraviolet-B laser diode at 298 nm was realized at room temperature using pulse
operation. The laser diode has a lattice-relaxed Al 0.6 Ga 0.4 N layer from the underlying …

Continuous-wave lasing of AlGaN-based ultraviolet laser diode at 274.8 nm by current injection

Z Zhang, M Kushimoto, A Yoshikawa… - Applied Physics …, 2022‏ - iopscience.iop.org
We demonstrated continuous-wave lasing of an AlGaN-based ultraviolet laser diode,
fabricated on a single-crystal AlN substrate when operating at 5 C. The threshold current …

[HTML][HTML] Do** and compensation in heavily Mg doped Al-rich AlGaN films

P Bagheri, A Klump, S Washiyama… - Applied Physics …, 2022‏ - pubs.aip.org
Record low resistivities of 10 and 30 Ω cm and room-temperature free hole concentrations
as high as 3× 10 18 cm− 3 were achieved in bulk do** of Mg in Al 0.6 Ga 0.4 N films …

Recent development of UV-B laser diodes

M Iwaya, S Tanaka, T Omori, K Yamada… - Japanese Journal of …, 2022‏ - iopscience.iop.org
This review paper describes the historical development, current issues, and future
expectations of UV-B laser diodes, which are expected to be adopted in various applications …

Deep ultraviolet random laser disinfection

C Hou, M Kuo, P Lin, M Wu, C Huang, T Lin… - Optics & Laser …, 2024‏ - Elsevier
Recently, the ineffectiveness of conventional antibiotic treatments against multidrug-resistant
bacteria stimulated the development of novel effective disinfection technologies. Ultraviolet …

Low voltage drop AlGaN UV-A laser structures with transparent tunnel junctions and optimized quantum wells

A Ghosh, AMDM Xavier, SMN Hasan… - Journal of Physics D …, 2023‏ - iopscience.iop.org
This paper presents the design, material growth and fabrication of AlGaN laser structures
grown by plasma-assisted molecular beam epitaxy. Considering hole transport to be the …

Recent progress on aluminum gallium nitride deep ultraviolet lasers by molecular beam epitaxy

Q Zhang, X Yin, S Zhao - physica status solidi (RRL)–Rapid …, 2021‏ - Wiley Online Library
Over the past decades, the aluminum gallium nitride (AlGaN) alloy system has received
wide interest for the development of semiconductor deep ultraviolet (DUV) lasers due to its …

Stimulated emission mechanism of aluminum nitride

R Ishii, T Nagashima, R Yamamoto, T Hitomi, M Funato… - Physical Review B, 2022‏ - APS
Photoluminescence and stimulated emission spectroscopies were performed on transparent
aluminum nitride (AlN) substrates grown by hydride vapor-phase epitaxy. The stimulated …