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Progress in Efficiency and Brightness in GaAs-Based High Power Diode Lasers
/en/research/publications/progress-in-efficiency-and-brightness-in-gaas-based-high-power-diode-lasers
Continuous improvement is required in the properties of GaAs-based high power diode lasers, to support the needs of the rapidly growing material processing market, amongst others. A brief overview is…
Monolithic Master Oscillator Tilted Tapered Power Amplifier Emitting 9.5 W at 1060 nm
/en/research/publications/monolithic-master-oscillator-tilted-tapered-power-amplifier-emitting-95nbspw-at-1060nbspnm
In this work, we present the design and performance of a monolithic master oscillator tilted tapered power amplifier emitting at 1060 nm. The device consists of three sections: a 2 mm long…
Micro-integrated high-power narrow-linewidth external-cavity tapered diode laser at 808 nm
/en/research/publications/micro-integrated-high-power-narrow-linewidth-external-cavity-tapered-diode-laser-at-808nbspnm
A novel compact micro-integrated high-power narrow-linewidth external-cavity diode laser around 808 nm is demonstrated. The laser system contains a tapered amplifier consisting of a…
Extended cavity diode laser master-oscillator-power-amplifier for operation of an iodine frequency reference on a sounding rocket
/en/research/publications/extended-cavity-diode-laser-master-oscillator-power-amplifier-for-operation-of-an-iodine-frequency-reference-on-a-sounding-rocket
We present a hybrid microintegrated diode laser module developed for iodine spectroscopy on board a sounding rocket. The laser module is based on a master-oscillator-power-amplifier concept: an…
AlN overgrowth of nano-pillar-patterned sapphire with different offcut angle by metalorganic vapor phase epitaxy
/en/research/publications/aln-overgrowth-of-nano-pillar-patterned-sapphire-with-different-offcut-angle-by-metalorganic-vapor-phase-epitaxy
We present overgrowth of nano-patterned sapphire with different offcut angles by metalorganic vapor phase epitaxy. Hexagonal arrays of nano-pillars were prepared via Displacement Talbot Lithography…
Mode-locked diode laser-based two-photon polymerisation
/en/research/publications/mode-locked-diode-laser-based-two-photon-polymerisation
In this Letter, the authors present the construction of three-dimensional microstructures by two-photon polymerisation induced by ultrashort pulses of a mode-locked diode laser. The ultrafast light…
Versatile high power pulse-laser source for pico- and nanosecond optical pulses
/en/research/publications/versatile-high-power-pulse-laser-source-for-pico-and-nanosecond-optical-pulses
This paper presents a pulse-laser source for the generation of ps and ns laser pulses with more than 50 W peak output power. The final stages of the drivers use GaN transistors and are capable…
Preface - JSS Focus Issue on Recent Advances in Wide Bandgap III-Nitride Devices and Solid State Lighting: A Tribute to Isamu Akasaki
/en/research/publications/preface-jss-focus-issue-on-recent-advances-in-wide-bandgap-iii-nitride-devices-and-solid-state-lighting-a-tribute-to-isamu-akasaki
Preface - JSS Focus Issue on Recent Advances in Wide Bandgap III-Nitride Devices and Solid State Lighting: A Tribute to Isamu Akasaki F. Ren1, K.C. Mishra2, H. Amano3,…
Improvement in the Reliability of AlGaInP-Based Light-Emitting Diode Package Using Optimal Silicone and Leadframe Structure
/en/research/publications/improvement-in-the-reliability-of-algainp-based-light-emitting-diode-package-using-optimal-silicone-and-leadframe-structure-1
We investigated how the reliability of red light-emitting diode (LED) packages was affected by the types of silicones and package structures. The tensile strengths of different types of silicones…
Nanopatterned sapphire substrates in deep-UVLEDs: is there an optical benefit?
/en/research/publications/nanopatterned-sapphire-substrates-in-deep-uvleds-is-there-an-optical-benefit
Light emitting diodes (LEDs) in the deep ultra-violet (DUV) offer new perspectives for multiple applications ranging from 3D printing to sterilization. However, insufficient light extraction severely…