High-power operation and lateral divergence angle reduction of broad-area laser diodes at 976 nm

Y Liu, G Yang, Z Wang, T Li, S Tang, Y Zhao… - Optics & Laser …, 2021 - Elsevier
Broad-area diode lasers with high output power and low lateral divergence angle are highly
desired for extensive scientific and industrial applications. Here, we report on the epitaxial …

48 W continuous-wave output from a high-efficiency single emitter laser diode at 915 nm

Y Liu, G Yang, Y Zhao, S Tang, Y Lan… - IEEE Photonics …, 2022 - ieeexplore.ieee.org
Improving the power and efficiency of 9xx-nm broad-area laser diodes has a great help in
reducing the cost of laser systems and expanding applications. This letter presents an …

808 nm broad-area laser diodes designed for high efficiency at high-temperature operation

Y Lan, G Yang, Y Liu, Y Zhao, Z Wang… - Semiconductor …, 2021 - iopscience.iop.org
Semiconductor lasers with high power conversion efficiency (PCE) and output power are
heavily investigated driven by more energy-efficient commercial applications. In this paper …

High efficiency 1.9 kW single diode laser bar epitaxially stacked with a tunnel junction

Y Zhao, Z Wang, A Demir, G Yang, S Ma… - IEEE Photonics …, 2021 - ieeexplore.ieee.org
We report on the development of a 940-nm diode laser bar based on epitaxially stacked
active regions by employing a tunnel junction structure. The tunnel junction and the device …

Experimental and theoretical studies into longitudinal spatial hole burning as a power limit in high-power diode lasers at 975 nm

S Arslan, H Wenzel, J Fricke, A Thies, A Ginolas… - Applied Physics …, 2023 - pubs.aip.org
Spatial-hole-burning as a limit to the continuous-wave (CW) output power of GaAs-based
diode lasers is experimentally studied. For 90 lm stripe lasers with 6 mm resonator length …

Carrier density non-pinning at stripe edges and widened lateral far field due to longitudinal temperature variation in broad-area high power diode lasers

SK Khamari, S Arslan, C Zink, SJ Sweeney… - Applied Physics …, 2023 - pubs.aip.org
Broad area lasers operating at high power with improved beam quality are needed in many
applications. In typical high-power diode lasers with asymmetric facet coating, it is observed …

Epitaxial design progress for high power, efficiency, and brightness in 970 nm broad area lasers

A Boni, S Arslan, G Erbert, P Della Casa… - High-Power Diode …, 2021 - spiedigitallibrary.org
GaAs based high power broad area lasers are the most efficient source of optical energy
and are used in many industrial applications. Despite considerable improvement in power …

Power and Efficiency Scaling of GaAs-based Edge-Emitting High-Power Diode Lasers

P Crump, A Boni, M Elattar, SK Khamari… - IEEE Journal of …, 2024 - ieeexplore.ieee.org
Current progress in the scaling of continuous wave optical output power and conversion
efficiency of broad-area GaAs-based edge emitters, broad-area lasers (BALs), operating in …

Non-uniform longitudinal current density induced power saturation in GaAs-based high power diode lasers

S Arslan, RB Swertfeger, J Fricke, A Ginolas… - Applied Physics …, 2020 - pubs.aip.org
The output power of modern 975nm GaAs-based broad area diode lasers is limited by
increasing carrier and photon losses at high bias. We use experiment and one-dimensional …

High power conversion efficiency narrow divergence angle photonic crystal laser diodes

L Wang, A Qi, X Zhou, T Fu, C Xu, R Han… - IEEE Photonics …, 2022 - ieeexplore.ieee.org
9xx nm laser diodes (LDs) with aluminum component continuous gradient photonic band
crystal (CCG-PBC) waveguide structure are designed and fabricated. The simulation results …