optics{ semiclassical_spectra{ } }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
items: \(\mathrm{maximum\;1}\)
Compute and output emission spectra calculated from energy-resolved densities \(n(x,E)\) and \(p(x,E)\) computed by energy_resolved_density{}. Radiative recombination rate reads \(R_\mathrm{radiative}(x,E)=C(x)\int dE_h\int dE_e\ n(x,E_e) p(x,E_h) \delta(E_e-E_h-E)\), where \(C(x)\) [\(\mathrm{cm}^3/\mathrm{s}\)] is the (material-dependent) radiative recombination parameter. “spectra” and “density” in the following refer to the integrals of \(R_\mathrm{radiative}\) over position and energy, respectively.
Important
The following general conditions must be satisfied when defining optics{ semiclassical_spectra{ } }
All must be defined: energy_grid{ } / classical{ energy_resolved_density{ } } / classical{ Gamma{ } }
Maintained Keywords¶
The keywords below are available in at least one of currently published releases and are not planned to change in the nearest future.
refractive_index¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{real\;number}\)
values: \([1.0, \ldots)\)
unit: \(\mathrm{-}\)
default: \(\mathrm{substrate}\)
Average refractive index \(n_r\). Refractive index used for calculating gain and absorption spectra. The absorption/gain spectra is multiplied by the factor \(1/n_r^2\). The values for the optical dielectric constant from the database are not used yet at this point.
energy_broadening_gaussian¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{real\;number}\)
values: \([10^{-6}, \ldots)\)
unit: \(\mathrm{eV}\)
energy_broadening_lorentzian¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{real\;number}\)
values: \([10^{-6}, \ldots)\)
unit: \(\mathrm{eV}\)
output_spectra{ }¶
\(\mathrm{\textcolor{WildStrawberry}{required}}\)
items: \(\mathrm{exactly\;1}\)
When this group is defined then optical spectra computed within semi-classical models (based on carrier densities) are saved to the output folder. The spectra are averaged over the entire simulation domain.
output_spectra{ emission }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
Emission spectra are outputted, only the positive part is shown. Stimulated emission assumes that all photon modes are occupied by one photon. Thus, not the actual stimulated emission in the device is calculated, but rather a spectral response similar to the gain.
Note
The model is not suitable for systems with occupation inversion, above the threshold. It can be successfully used for modeling, e.g., LEDs.
output_spectra{ gain }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
Gain spectra are outputted, only the positive part. The upper 30% of the spectra are cut off.
output_spectra{ decadic_gain }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
Decadic gain spectra are outputted, only the positive part. The upper 30% of the spectra are cut off.
output_spectra{ absorption_coeff }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
Absorption spectra are outputted, both positive and negative parts. The upper 30% of the spectra are cut off.
output_spectra{ decadic_absorption_coeff }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
Decadic absorption spectra are outputted, both positive and negative parts. The upper 30% of the spectra are cut off.
output_spectra{ im_epsilon }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
The upper 30% of the spectra are cut off.
output_spectra{ spectra_over_energy }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
selected spectra are outputted over energy
output_spectra{ spectra_over_frequency }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
selected spectra are outputted over frequency
output_spectra{ spectra_over_wavenumber }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
selected spectra are outputted over wavenumber
output_spectra{ spectra_over_wavelength }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
selected spectra are outputted over wavelength
output_spectra{ photon_spectra }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
output_spectra{ power_spectra }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
output_local_spectra{ }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
items: \(\mathrm{maximum\;1}\)
When this group is defined then optical spectra computed within semi-classical models (based on carrier densities) are saved to the output folder. The spectra are position-dependent within the simulation domain.
output_local_spectra{ emission }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
Emission spectra are outputted, only the positive part is shown. Stimulated emission assumes that all photon modes are occupied by one photon. Thus, not the actual stimulated emission in the device is calculated, but rather a spectral response similar to the gain.
Note
The model is not suitable for systems with occupation inversion, above the threshold. It can be successfully used for modeling, e.g., LEDs.
output_local_spectra{ gain }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
Gain spectra are outputted, only the positive part. The upper 30% of the spectra are cut off.
output_local_spectra{ decadic_gain }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
Decadic gain spectra are outputted, only the positive part. The upper 30% of the spectra are cut off.
output_local_spectra{ absorption_coeff }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
Absorption spectra are outputted, both positive and negative parts. The upper 30% of the spectra are cut off.
output_local_spectra{ decadic_absorption_coeff }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
Decadic absorption spectra are outputted, both positive and negative parts. The upper 30% of the spectra are cut off.
output_local_spectra{ im_epsilon }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
The upper 30% of the spectra are cut off.
output_local_spectra{ spectra_over_energy }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
selected spectra are outputted over energy
output_local_spectra{ spectra_over_frequency }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
selected spectra are outputted over frequency
output_local_spectra{ spectra_over_wavenumber }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
selected spectra are outputted over wavenumber
output_local_spectra{ spectra_over_wavelegth }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
selected spectra are outputted over wavelegth
output_local_spectra{ photon_spectra }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{yes}\)
output_local_spectra{ power_spectra }¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
output_photon_density¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
Output emitted photon density in \(\mathrm{cm}^{-3}\mathrm{s}^{-1}\) to emitted_photon_density.dat
output_power_density¶
\(\mathrm{\textcolor{Aquamarine}{optional}}\)
type: \(\mathrm{choice}\)
values: \(\mathrm{yes\;/\;no}\)
default: \(\mathrm{no}\)
Output emitted power density in \(\mathrm{W}/\mathrm{cm}^3\) to emitted_power_density.dat