Photonics West 2022

FBH scientists present current research results at the upcoming Photonics West. FBH is involved in several presentations:

• Thin-film flip-chip UVB LEDs realized by electrochemical etching

• Thin-film UV VCSELs and LEDs by electrochemical etching

• Out of the blue: UV VCSELs

• Development of far-UVC LEDs and their application in irradiation systems for antisepsis and sensing

• Conduction properties and threshold voltage instability in β-Ga₂O₃ MOSFETs

• 635 nm tapered diode lasers with more than 2000 h operation at 500 mW output power

• Comparison of electro-optical, spectral, and spatial beam parameters of 785nm DBR tapered lasers with different grating lengths

• Electrically wavelength tunable DBR laser for multi-wavelength excitation Raman spectroscopy near 785 nm

• Longitudinal spatial hole burning and associated non-uniform current and carrier density profile as a power limit in high-power diode lasers

• Micro-electroluminescence and micro-photoluminescence study on GaN-based laser-diode aging

• Investigation of astigmatism in tapered edge-emitting diode amplifiers at 980 nm

• Coherent beam combining progress on diode lasers and tapered amplifiers at 808 nm

• Simulation of optical feedback propagating through tapered amplifiers

• Kilowatt-class, 1-cm diode laser bars at 910-940 nm with improved power, conversion efficiency and beam quality

• Progress in experimental studies into the beam parameter product of GaAs-based high-power diode lasers

• UV LED reliability: degradation mechanisms and challenges

• Diode laser based light sources for shifted excitation resonance Raman difference spectroscopy in the spectral range between 450 nm and 532 nm

• On-site Shifted Excitation Raman Difference Spectroscopy for Soil Investigations

• High-brightness 1.4kW 780nm QCW laser pump module with low-loss coupling into 1mm fiber up to 50% duty cycle