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06/10/20
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New option: A new version is now available that allows to
modify various material parameters like bandgaps, band-offsets, effective masses, strain parameters or dielectric constants.
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05/08/19
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New features: now allows to display higher order transverse modes and the corresponding far fields.
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06/01/18
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Release of
SimuLase™, Version 3.0
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New materials: Dilut Bismuth AlInGaAsSbBi now available.
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New materials: Wide bandgap AlInGaN now available.
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New capability: Bandstructures and wavefunctions as calaculated
by DFT theory can now be used instead of results of kp-theory. A LINUX based interface
is available that converts output by VASP to be used as input for
SimuLase calculations.
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New capability: New 3D-plotting tool for easier database analysis.
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New model: A classic CN3-model and a density-activated
defect recombination model have been implemented to simulate Auger-like non-radiative losses
in the tools for operating characteristics instead of using microscopically calculated data.
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New capability: The program now allows to calculate for the case that the
electron and hole densities are not identical.
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SimuLase demo: New demo-version of
SimuLase™
now available.
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SimuLase manual: Updated
SimuLase manual.
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11/04/14
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Release of
SimuLase™, Version 2.0
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Tenfold speed up: Totally revised codes allow for about ten times faster
calculations than in Version 1.6.
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GPU enabled: The program now allows the use of one or more GPUs
for the calculation of databases. This allows for additonal speed-ups of typically
a factor of two up to about a factor of five as compared to the already tenfold
speed-up versus Version 1.6 due to optimized routines.
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New materials: The material system AlInGaAsSb is now available.
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New capability: The program now includes the option to calculate
intraband (free carrier) absorption.
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01/05/13
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Release of
SimuLase™, Version 1.6
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New Tool: LI-Characteristics; The Current Calculator tool
now includes additional capabilities that allow to calculate LI-characteristics
in addition to threshold characteristics. Additional data like IQE, T_0, T_1
is calculated.
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Revised GUI: The GUI has been revised to include the new capabilites,
to simplify access to structures and databases, to have separate modes for edge-emitting
and vertically emitting devices and to display additional data like strain and dopant related free carrier
concentrations.
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08/30/11
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New coating materials: Additional dielectric coatings, Al2O3,
SiO2, Ta2O5,
TiO2, Y2O3, implemented
in all SimuLase products.
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New tool: LWEF; A tool to calculate the LWEF for changes in the electric field (acc. N. Suzuki, et al.
IEEE PTL, 7, 1007 (1995)) has been implemented.
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Optimized perfomance: A new algorithm has been implemented for optimized distribution of
calculations on multi-processor machines.
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02/01/11
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Updated settings: SimuLase now allows to set up databases for various
external Voltages within one batch job.
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01/19/11
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SimuLase 1.x: Received AFNIC approval.
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06/10/10
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Release of
SimuLase™, Version 1.5
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New algorithms, improved accuracy: A new algorithm has been
implemented that leads to improved accuracy in the below bandgap absorption
as required e.g. for electroabsorption modulators. This also improves
the general accuracy of results for wide bandgap materials (wavelengths <800nm).
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Simplified settings: The settings for creating GainDatabases
has been further automated and simplified.
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03/12/10
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SimuLase: Now compatible with 64-bit platforms.
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10/29/09
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Release of
SimuLase™, Version 1.4
With complete set of V(E)CSEL-design tools.
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New tools: Includes new tools allowing to calculate the
operating characteristics of V(E)CSELs like input-output characteristics,
lasing wavelengths or intrinsic operating temperatures.
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New tools: Includes a new tool that allows to export
GainDatabases in a format that can be directly imported into Crosslight Inc.'s
Lastip software.
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New tools: Allows to export the structural information in
Window's Excel format.
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Improved algorithms: An improved (propriatory) method for the calculation
of the wavelength and temperature dependence of the background refractive
indicies has been implemented.
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07/13/09
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Improved Design Structure Tool: Now allows to un-do, re-do
changes to the structure. Now allows to save cloning information.
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06/03/09
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Release of
SimuLase™, Version 1.3
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New tools: Includes a new tool allowing to calculate the surface-PL
for structures with strong cavity effects like V(E)CSELs and compare the spectra to experimentally
measured data.
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Improved tools: The Reflection/Transmission tool now allows to import
experimentally measured spectra for direct comparisons.
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02/17/09
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Release of
SimuLase™, Version 1.2
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New tools: Includes new tools allowing to calculate the longitudinal (propagating) modes and reflection and
transmission spectra.
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New materials: Versions for the material families of AlInGaAsSb and dillute Nitride AlInGaNAs now readily available.
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New materials: Includes metallization layers (so far: Ti and Au) and anti-reflection coatings (so far
Si3N4). Other coatings and metals will be included on request.
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Improved algorithms: Some corrections for improved stability.
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10/06/08
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SimuLase-demo. New demo version available with small corrections and modifications.
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09/02/08
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New module: Auger module now available. Manual updated to include
description of Auger calculations.
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Graphics interface: Some corrections
to the graphics interface.
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07/07/08
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Release of SimuLase™, Version 1.1
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07/07/08
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New tool: New tool calculating the linewidth enhancement
factor incorporated.
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Export Dataset: New feature that allows to export
displayed data into ASCII-files for import into other software like Excel.
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Confinement factor: corrected an error in the confinement
factor calculation that could have occured if 'Solve Drift Diffusion' was
checked or the structure included extremely thin layers.
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06/23/08
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SimuLase manual: Extended Sec. 5.7, "Possible Speed-Ups",
to give some more details for specific examples.
Updated the manual for recent changes in the program.
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Created files: SimuLase now also writes out the
strain into files named "name_TTT_strain.dat". These files are created
in the GainDatabase directory. There is currently no plotting-tool included
in SimuLase for these files.
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GainDatabase time estimate: Changed the algorithm
that estimates the time required to set up a Database.
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Drift diffusion solver: corrected an error due to which
the drift-diffusion problem was only solved in the calculation for the first entry
of the list of carrier densities.
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06/19/08
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Optical mode solver: Now, the optical confinement
factor is no longer calculated from the overlap of the mode with layers
marked as being of type 'Well'. Instead, the confinement factor is calculated
from the overlap of the mode with all layers where the confinement potential bandgap energy
is smaller than the energy corresponding to the operating 'Wavelength' as specified
on the 'Advanced' panel of the 'Design Structure' tool.
The type 'Well' or 'Barrier' is now only used for the determination of the
required subbands.
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Optical mode solver: Increased stability and accuracy
such that it should find confined modes where it previously didn't.
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Optical mode solver: Corrected error in the confinement
factor calculation that appeared for structures with graded composition ('GRINSCH-type' layers).
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Plot windows: Corrected error that occured
when zooming into plots with log-scale axis.
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Current Calculator tool: We added the
possibility to calculate for radiative losses averaged for TE- and TM-polarization
(Jrad=2/3 Jrad,TE + 1/3 Jrad,TM).
Also, changed the way the material loss or wavelength is re-set after changes in the settings.
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Gain vs. Current tool: We added the
possibility to calculate for radiative losses averaged for TE- and TM-polarization
(Jrad=2/3 Jrad,TE + 1/3 Jrad,TM).
Also, included Auger losses - if available - in the calculation.
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)
