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High-power, red-emitting DBR-TPL for possible 3d holographic or volumetric displays
/forschung/publikationen/high-power-red-emitting-dbr-tpl-for-possible-3d-holographic-or-volumetric-displays
To create holographic or volumetric displays, it is highly desirable to move from conventional imaging projection displays, where the light is filtered from a constant source towards flying spot,…
Dynamics of high power gain switched DFB RW laser under high current pulse excitation on a nanosecond time scale
/forschung/publikationen/dynamics-of-high-power-gain-switched-dfb-rw-laser-under-high-current-pulse-excitation-on-a-nanosecond-time-scale
In this paper we present detailed experimental results of the impact of the amplitude and the widths of current pulses injected into a gain-switched distributed feedback (DFB) laser emitting at a…
1120 nm highly brilliant laser sources for SHG-modules in bio-analytics and spectroscopy
/forschung/publikationen/1120-nm-highly-brilliant-laser-sources-for-shg-modules-in-bio-analytics-and-spectroscopy
Highly brilliant diode lasers at 1120nm with a high optical output power, nearly diffraction limited beam and narrow spectral line width are increasingly important for non-linear frequency conversion…
654 nm broad area lasers for QCW operation with a maximal facet load of 76 mW/µm
/forschung/publikationen/654-nm-broad-area-lasers-for-qcw-operation-with-a-maximal-facet-load-of-76-mwum
Compared to diode lasers emitting in the near infrared, the development of high power diode lasers in the red spectral range is more challenging due to the applicable compound semiconductors, the…
Sub-MHz linewidth of 633 nm diode lasers with internal surface DBR gratings
/forschung/publikationen/sub-mhz-linewidth-of-633-nm-diode-lasers-with-internal-surface-dbr-gratings
Red-emitting diode lasers having a large coherence length with a tunable wavelength and a narrow spectral linewidth with an emission power in the 10 mW range are sought for a variety of…
Low-loss, smile-insensitive external frequency-stabilization of high power diode lasers enabled by vertical designs with extremely low divergence angle and high efficiency
/forschung/publikationen/low-loss-smile-insensitive-external-frequency-stabilization-of-high-power-diode-lasers-enabled-by-vertical-designs-with-extremely-low-divergence-angle-and-high-efficiency
Broad area lasers with narrow spectra are required for many pumping applications and for wavelength beam combination. Although monolithically stabilized lasers show high performance, some…
Suppression of Mode Switching Noise in Wavelength Stabilized Laser Diodes by External Bragg Gratings
/forschung/publikationen/suppression-of-mode-switching-noise-in-wavelength-stabilized-laser-diodes-by-external-bragg-gratings
Special applications require low noise wavelength stabilized diode lasers for pumping of solid state lasers. We report on intensity noise in the frequency range of kHz to MHz due to bi-stable mode…
High power, high beam quality laser source with narrow, stable spectra based on truncated-tapered semiconductor amplifier
/forschung/publikationen/high-power-high-beam-quality-laser-source-with-narrow-stable-spectra-based-on-truncated-tapered-semiconductor-amplifier
High power diode lasers are increasingly important in many industrial applications. However, an ongoing challenge is to simultaneously obtain high output power, diffraction-limited beam quality and…
Efficient concept generating 3.9 W of diffraction-limited green light with spectrally combined tapered diode lasers
/forschung/publikationen/efficient-concept-generating-39-w-of-diffraction-limited-green-light-with-spectrally-combined-tapered-diode-lasers
We propose an efficient concept increasing the power of diode laser systems in the visible spectral range. In comparison with second harmonic generation of single emitters, we show that spectral beam…
Effect of index-antiguiding on the threshold of GaN-based narrow ridge-waveguide laser diodes
/forschung/publikationen/effect-of-index-antiguiding-on-the-threshold-of-gan-based-narrow-ridge-waveguide-laser-diodes
The effect of index antiguiding on GaN-based blue and violet laser diodes has been investigated. Strong antiguiding effects are proposed to be responsible for the large dependence of the threshold…