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1 W reliable operation of broad area lasers and 8 W reliable operation of 5 mm wide laser bars at 650 nm
/forschung/publikationen/1nbspw-reliable-operation-of-broad-area-lasers-and-8nbspw-reliable-operation-of-5nbspmm-wide-laser-bars-at-650nbspnm
Reliability tests for 650 nm broad area lasers and bars with GaInP quantum wells embedded in AlGaInP waveguide layers and n-AlInP and p-AlGaAs cladding layers will be presented. Reliable…
cw, 325nm, 100mW semiconductor laser system as potential substitute for HeCd gas lasers
/forschung/publikationen/cw-325nm-100mw-semiconductor-laser-system-as-potential-substitute-for-hecd-gas-lasers
In the last decades, diode laser systems conquered the spectral range step-by-step from conventional gas lasers, wherever they can match or outperform in optical specifications. Although highly…
High brightness diode lasers with very narrow vertical divergence
/forschung/publikationen/high-brightness-diode-lasers-with-very-narrow-vertical-divergence
A narrow vertical divergence of about 30° including 95% of power is highly desired in many applications. Principal designs for narrow divergence diode lasers like simple broad waveguide and more…
High power DFB lasers for D1 and D2 caesium absorption spectroscopy and atomic clocks
/forschung/publikationen/high-power-dfb-lasers-for-d1-and-d2-caesium-absorption-spectroscopy-and-atomic-clocks
Distributed feedback ridge-waveguide lasers, emitting up to 250 mW in a single lateral and longitudinal mode at 852 nm and 894 nm are presented. A threshold current of 40 mA and a…
Integrated 1060nm MOPA pump source for high-power green light emitters in display technology
/forschung/publikationen/integrated-1060nm-mopa-pump-source-for-high-power-green-light-emitters-in-display-technology
We present a compact green light emitter for laser displays and focus on the pump source for a SHG waveguide in single-pass configuration. The developed pump source has a RW-structure consisting of…
High-brightness quantum well and quantum dot tapered lasers
/forschung/publikationen/high-brightness-quantum-well-and-quantum-dot-tapered-lasers
Several types of high-brightness near-infrared tapered quantum well and quantum dots tapered lasers are reviewed and compared. Recent developments include record-high brightness quantum well tapered…
Brilliant high power laser bars for industrial applications
/forschung/publikationen/brilliant-high-power-laser-bars-for-industrial-applications
High power semiconductor lasers are commonly used as efficient pump sources for solid state lasers or multiplexing applications. Common wavelengths are 808nm e.g. for pumping of Nd:YAG and 9xx nm for…
Passively Cooled TM Polarized 808-nm Laser Bars With 70% Power Conversion at 80-W and 55-W Peak Power per 100-µm Stripe Width
/forschung/publikationen/passively-cooled-tm-polarized-808-nm-laser-bars-with-70-power-conversion-at-80-w-and-55-w-peak-power-per-100-um-stripe-width
Many solid state laser systems rely on transversemagnetic polarized 808-nm diode lasers, whose efficiency is limited by the transparency current of the quantum well and whose peak power is limited by…
Infrared emission from the substrate of GaAs-based semiconductor lasers
/forschung/publikationen/infrared-emission-from-the-substrate-of-gaas-based-semiconductor-lasers
We report on the origin of three additional low-energy spontaneously emitted bands in GaAs-based broad-area laser diodes. Spectrally and spatially resolved scanning optical microscopy and…
Descartes ovaloides for negative refractive indices and their aplanatic cases
/forschung/publikationen/descartes-ovaloides-for-negative-refractive-indices-and-their-aplanatic-cases
The possibility of material design technology to obtain negative refractive indices poses the question on the optical properties of aspherical surfaces made from such media. Here, the special…