Polarization switching in VCSEL's due to thermal lensing
K Panajotov, B Ryvkin, J Danckaert… - IEEE Photonics …, 1998 - ieeexplore.ieee.org
We demonstrate a new mechanism for polarization switching in slightly anisotropic vertical-cavity
surface-emitting lasers (VCSEL's) based on index guiding due to the effect of thermal …
surface-emitting lasers (VCSEL's) based on index guiding due to the effect of thermal …
Asymmetric-waveguide laser diode for high-power optical pulse generation by gain switching
B Ryvkin, EA Avrutin, JT Kostamovaara - Journal of Lightwave …, 2009 - opg.optica.org
A semiconductor laser with a strongly asymmetric waveguide structure and a relatively thick
($\sim$0.1 $\mu$m) active layer, resulting in an extremely large equivalent spot size, is …
($\sim$0.1 $\mu$m) active layer, resulting in an extremely large equivalent spot size, is …
On laser ranging based on high-speed/energy laser diode pulses and single-photon detection techniques
…, H Rapakko, E Avrutin, B Ryvkin - IEEE Photonics …, 2015 - ieeexplore.ieee.org
This paper discusses the construction principles and performance of a pulsed time-of-flight (TOF)
laser radar based on high-speed (FWHM ~100 ps) and high-energy (~1 nJ) optical …
laser radar based on high-speed (FWHM ~100 ps) and high-energy (~1 nJ) optical …
High-energy picosecond pulse generation by gain switching in asymmetric waveguide structure multiple quantum well lasers
JMT Huikari, EA Avrutin, BS Ryvkin… - IEEE Journal of …, 2015 - ieeexplore.ieee.org
A multiple quantum well laser diode utilizing an asymmetric waveguide structure with a
large equivalent spot size of ~3 μm is shown to give high energy (~1 nJ) and short (~100 ps) …
large equivalent spot size of ~3 μm is shown to give high energy (~1 nJ) and short (~100 ps) …
Performance improvement by a saturable absorber in gain-switched asymmetric-waveguide laser diodes
B Lanz, BS Ryvkin, EA Avrutin, JT Kostamovaara - Optics Express, 2013 - opg.optica.org
A simplest saturable absorber, in the form of an unpumped section, is introduced into a
Fabry-Perot semiconductor laser with a strongly asymmetric broadened waveguide structure …
Fabry-Perot semiconductor laser with a strongly asymmetric broadened waveguide structure …
Asymmetric-waveguide, short cavity designs with a bulk active layer for high pulsed power eye-safe spectral range laser diodes
BS Ryvkin, EA Avrutin… - … science and technology, 2020 - iopscience.iop.org
It is shown, by calculations calibrated against the authors' recent experimental data, that an
eye-safe wavelength range InGaAsP/InP high pulsed power laser design using a bulk active …
eye-safe wavelength range InGaAsP/InP high pulsed power laser design using a bulk active …
Effect of spatial hole burning on output characteristics of high power edge emitting semiconductor lasers: A universal analytical estimate and numerical analysis
EA Avrutin, BS Ryvkin - Journal of Applied Physics, 2019 - pubs.aip.org
The effect of longitudinal spatial hole burning on the performance of a semiconductor laser
with a strongly asymmetric resonator is investigated numerically. The effects of spatial hole …
with a strongly asymmetric resonator is investigated numerically. The effects of spatial hole …
High Power m Pulsed Laser Diode With Asymmetric Waveguide and Active Layer Near p-cladding
LW Hallman, BS Ryvkin, EA Avrutin… - IEEE Photonics …, 2019 - ieeexplore.ieee.org
We report first experimental results on a high-power pulsed semiconductor laser operating
in the eye-safe spectral range (wavelength around 1.5 μm) with an asymmetric waveguide …
in the eye-safe spectral range (wavelength around 1.5 μm) with an asymmetric waveguide …
3 nJ, 100 ps laser pulses generated with an asymmetric waveguide laser diode for a single-photon avalanche diode time-of-flight (SPAD TOF) rangefinder application
…, L Toikkanen, T Leinonen, BS Ryvkin… - Measurement …, 2012 - iopscience.iop.org
An asymmetric waveguide laser diode with a thick active layer operated with enhanced gain
switching is shown to be able to produce∼ 100 ps,∼ 25 W optical pulses in fundamental …
switching is shown to be able to produce∼ 100 ps,∼ 25 W optical pulses in fundamental …
Quantum well laser with an extremely large active layer width to optical confinement factor ratio for high-energy single picosecond pulse generation by gain switching
BS Ryvkin, EA Avrutin… - … science and technology, 2011 - iopscience.iop.org
It is theoretically shown that gain switching quantum well AlGaAs/InGaAs laser with a very
large ratio of active layer thickness to optical confinement factor (∼ 8 µm) can result in single, …
large ratio of active layer thickness to optical confinement factor (∼ 8 µm) can result in single, …