Is there any way to do a
steady state simulation in this software?
If I want to see the real
population of the each level, I would be able to predict the emission
intensity.
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The possibilities for predicting the
amount of emitted light depend on whether 1) you are using a CW laser and
looking at steady state emission or 2) you are using a pulsed laser and are
looking for the number of emitted photons from a single pulse.
1) For steady state simulations:
Use the 'box' shaped pulse that has a
flat top. For the pulse width (FWHM),
pick a pulse width that is longer than the longest relaxation time for the
ion. This will allow the ions to come
to approximately a steady state near the end of the pulse. Note that for a 'box' pulse, the internal
program variable T0 will be 1/2 of the pulse width FWHM. In Numerical Setup, you may pick the
'Temporal Domain' as 2 times T0 (instead of 5) . Also note that the center of the pulse is
at 0, so the temporal domain of 2*T0 actually goes from -T0 to +T0. After doing a simulation, compare the
energy level populations near the end of the pulse.
2) For a single short laser pulse:
Look at the time dependence of the
population of the emitting state by running the program with
Post-Simulation. Pick a
post-simulation time long enough to see the full decay. In Plot Creator, generate a 2D plot of the
kinetics of the population density at the center of the pulse (rho = 0). Select the resulting plot with the mouse,
right click on the plot and then select the option 'Integral'. Using 'Integral', you may integrate the
area under the curve of population versus time. The area is proportional to the number of
electrons that relax from that state.
If there is more than one relaxation pathway from that state, you will
need to multiple the area under the curve by a factor equal to (rate of
emission from the energy level)/(sum of all rates from the energy level) to
get the fraction of electrons that emit photons.
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SimphoSOFT® support
Pages
Labels
- SimphoSOFT Modeling features (3)
- E-CAD (1)
- GUI (1)
- Hardware (1)
- Installation (1)
- Plot (1)
- Run (1)
Steady state simulation. Modeling emission.
SimphoSOFT running on tablets.
Question
Can SimphoSOFT run on
tablets?
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Answer
SimphoSOFT can be installed on any
tablet which is running one of the following flavors of Windows 8: Windows 8,
Windows 8 Pro, or Windows 8 Enterprise. SimphoSOFT is NOT compatible with
Windows 8 RT as it is not an App. The tablet should also have at least one
standard size USB port to accommodate a security device Dongle.
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Installing SimphoSOFT for all user accounts.
Question
Can all the users of a
host computer run SimphoSOFT from their accounts?
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Answer
It is possible to allow all active
users on the host computer to run SimphoSOFT from their accounts. For those
who are interested, we can send a simple script which should be run from the
user account with administrative rights, the one which was used to install
SimphoSOFT. This script will create all necessary folders and shortcuts to
successfully launch SimphoSOFT.
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Post-simulation plots are not smooth.
Question
My post-simulation plots
are not smooth.
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Answer
To get smoother plots along the time
axis, insert a larger number than 32 in the post simulation 'Time Points'
box. The program calculated 512 time
points (from # Iterations in 'Post Simulation'), so you can use numbers as
large as 512 if you want. This will
not slow down the simulations.
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Error 1086 during run.
Question:
Is there any reason, this program is not
running if I use post simulation time 10^9, it shows 1086 error but runs
correctly at 10^7? Some of my decay at 10^7 are not complete, I am trying to
do little longer time but not working.
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Answer
The computer may be going into 'sleep'
mode or 'hibernation' mode during the long runs. That will cause the program to lose contact
with the dongle and cause the program to stop with an error code. Please turn off 'sleep' mode and
'hibernation' mode and let me know if that solves the problem.
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What is workspace graph?
I am getting error: “All
assigned components must be in the workspace graph”. What is workspace graph
and why I am getting this error?
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Workspace graph connects all the
components along the beam path till it hits the target sample. For example,
if a light beam goes through a beam splitter and a delayer before it reaches
the target sample, all such components (beam, beam splitter, delayer and
sample) will be connected in the workspace graph. These relationships are
important for SimphoSOFT Math Kernel to recognize which setup component
affect other components during simulation. The beam path is denoted by a
dotted line: it starts from the beam component and ends at the sample
component.
To start simulation the following rules
should be satisfied:
●
The beam path starts at a laser and ends at a
sample or multi-layer sample
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All assigned components should be on the path
of one of the laser beams
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Any assigned z-translations must have an
associated assigned sample component
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Project templates
Are project templates the
only experimental setup configurations which SimphoSOFT can model?
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No. Templates have been composed to
help users to avoid repetitive steps in the process of creating an
experimental setup.
Users can create an unlimited number of
desired configurations in SimphoSOFT E-CAD by adding/moving new/existing
components in the workspace. In addition, for an active material SimphoSOFT
allows building energy level diagram of an arbitrary size and shape and
defining desired transitions from a provided set of Simphotek Transition
Modules. This enables users to model absorption, relaxation, energy transfer,
upconversion, cross-relaxation (chemical reaction) between arbitrary levels
(molecules) in the system.
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