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High-power operation of coherently coupled tapered laser diodes in an external cavity
/forschung/publikationen/high-power-operation-of-coherently-coupled-tapered-laser-diodes-in-an-external-cavity
We demonstrate a rear-side phase-locking architecture with two high-brightness diode lasers. This technique is based on the passive phase-locking of emitters in an external cavity on their rear…
940nm QCW diode laser bars with 70% efficiency at 1 kW output power at 203K: analysis of remaining limits and path to higher efficiency and power at 200K and 300K
/forschung/publikationen/940nm-qcw-diode-laser-bars-with-70-efficiency-at-1-kw-output-power-at-203k-analysis-of-remaining-limits-and-path-to-higher-efficiency-and-power-at-200k-and-300k
Both high-energy-class laser facilities and commercial high-energy pulsed laser sources require reliable optical pumps with the highest pulse power and electro-optical efficiency. Although commercial…
Assessing the Influence of the Vertical Epitaxial Layer Design on the Lateral Beam Quality of High-Power Broad Area Diode Lasers
/forschung/publikationen/assessing-the-influence-of-the-vertical-epitaxial-layer-design-on-the-lateral-beam-quality-of-high-power-broad-area-diode-lasers
GaAs-based high-power broad-area diode lasers deliver optical output powers Popt > 10W with efficiency > 60%. However, their application is limited due to poor in-plane beam…
New class of compact diode pumped sub 10 fs lasers for biomedical applications
/forschung/publikationen/new-class-of-compact-diode-pumped-sub-10-fs-lasers-for-biomedical-applications
Diode-pumping Ti:sapphire lasers promises a new approach to low-cost femtosecond light sources. Thus in recent years much effort has been taken just to overcome the quite low power and low beam…
Influence of the LED heterostructure on the degradation behavior of (InAlGa)N-based UV-B LEDs
/forschung/publikationen/influence-of-the-led-heterostructure-on-the-degradation-behavior-of-inalgan-based-uv-b-leds
In this paper we report on the influence of the heterostructure design of (InAlGa)N-based UV-B LEDs grown by metal-organic vapor phase epitaxy on sapphire substrates on the degradation behavior of…
Generation of 7 W nanosecond pulses with 670 nm ridge-waveguide lasers
/forschung/publikationen/generation-of-7-w-nanosecond-pulses-with-670-nm-ridge-waveguide-lasers
The aim of this paper is to present detailed experimental and theoretical investigations of the behavior of ridge-waveguide (RW) lasers emitting at 670 nm under injection of sub-ns current…
Pulsed hybrid dual wavelength Y-branch-DFB laser - tapered amplifier system suitable for water vapor detection at 965 nm with 16 W peak power
/forschung/publikationen/pulsed-hybrid-dual-wavelength-y-branch-dfb-laser-tapered-amplifier-system-suitable-for-water-vapor-detection-at-965-nm-with-16-w-peak-power
A master oscillator power amplifier system emitting alternatingly at two neighbored wavelengths around 965 nm is presented. As master oscillator (MO) a Y-branch DFB-laser is used. The two…
5,000 h reliable operation of 785 nm dual-wavelength DBR-RW diode lasers suitable for Raman spectroscopy and SERDS
/forschung/publikationen/5000-h-reliable-operation-of-785-nm-dual-wavelength-dbr-rw-diode-lasers-suitable-for-raman-spectroscopy-and-serds
5,000 h reliable operation of 785 nm dual-wavelength DBR-RW diode lasers suitable for Raman spectroscopy and SERDS B. Sumpf, A. Müller, M. Maiwald Ferdinand-Braun-Institut,…
Power performance of 65 nm CMOS integrated LDMOS transistors at WLAN and X-band frequencies
/forschung/publikationen/dbr-tapered-diode-laser-at-1030-nm-with-nearly-diffraction-limited-narrowband-emission-and-127-w-of-optical-output-power
Nearly diffraction-limited emission from a distributed Bragg reflector (DBR) tapered diode laser is presented. Intrinsic wavelength stabilization is achieved with a 3rd order DBR grating manufactured…
Power performance of 65 nm CMOS integrated LDMOS transistors at WLAN and X-band frequencies
/forschung/publikationen/novel-approaches-to-increasing-the-brightness-of-broad-area-lasers
Progress in studies to increase the lateral brightness Blat of broad area lasers is reviewed. Blat=Pout/BPPlat is maximized by developing designs and technology for lowest lateral beam parameter…