Utilities and Options requires associated Rsoft Add-on Modules .

MOST, RSoft’s Multi-variable Optimization and Scanning Tool, is an exciting solution to the critical problem of design optimization for photonic devices.

- Any quantity produced by any RSoft tool can be the target of a scan or optimization.
- Scans and optimizations can be performed over an arbitrary number of parameters.
- Automatic generation of line, contour, and 3D volume plots.

**Applications :** Perform parameter scans over any design parameter in any number of dimensions, Perform single and multiple variable local and global automated optimization, Perform global optimization by genetic algorithm, Automated distributed computation of scans and some optimizations

The Solar Cell Utility provides an optical and electronic simulation solution for solar cell devices. The utility simplifies common tasks associated with solar cell design and aids in the rigorous computation of J-V curves, quantum efficiency spectra, and overall cell-efficiency.

- Arbitrary solar cell geometry can easily be created in the RSoft CAD.
- Simple electronic modeling via modified Ideal Diode equation; rigorous modeling via RSoft’s LaserMOD tool.
- Uses the AM1.5 Solar Spectrum as incident spectrum by default; a user-specified spectrum can also be used

**Applications :** Solar cell design, Solar cells with diffractive opticalelements (DOEs), Solar cells with randomly textured material interfaces, Ideal for investigating the electronic nature of solar cells

The Multi-Physics Utility is designed to be used in conjunction with any of RSoft’s passive device simulation tools. It provides a convenient interface from which perturbations of the refractive index profile of a structure may be included in the simulation. These perturbations can be due to advanced physical processes in the material, such as electro-optic effects, thermo-optic effects, stress-optic effects (i.e. strain), and carrier-induced effects. All material parameters needed to describe these effects can be defined in RSoft’s Material Library.

- Computes index perturbation by solving Poisson’s equation (electro-optic effect), thermal equation (thermo-optic effect), stress-strain equation (stress effect), and by using LaserMOD to model carrier-based effects.

**Applications :** Computes index perturbation by solving Poisson’s equation (electro-optic effect), thermal equation (thermo-optic effect), stress-strain equation (stress effect), and by using LaserMOD to model carrier-based effects.

The Tapered Laser Utility† provides an efficient and accurate design tool for analyzing and optimizing tapered semiconductor laser diodes. It essentially combines, two of RSoft’s most powerful and mature simulation tools BeamPROP and LaserMOD, to provide a full 3D simulation of tapered laser diodes. The quasi-3D electrical, quantum mechanical gain and thermal calculations are performed via LaserMOD, whereas the optical field is propagated via BeamPROP.

- Self-consistent optical, electronic and thermal simulation.
- Extensible material libraries.
- Output information includes L-I curves, I-V curves, spatial field plots, farfields etc.
- Capable of simulating physical effects like spatial hole burning, filamentation, over pumping etc.

**Applications :** Tapered laser diode design

The LED Utility accurately simulates novel LED structures and all materials involved. The utility simplifies common tasks associated with LED design and aids in the rigorous computation of extraction ratios and radiation patterns. It utilizes the RSoft CAD to describe the geometry and material properties and uses the RSoft flagship simulation tool FullWAVE for modeling the LED.

- Arbitrary LED geometry can easily be created in the RSoft CAD.
- Important material properties such as frequency-dependent complex refractive indices can be used.
- Rigorous optical simulation is performed by the RSoft FullWAVE FDTD simulation tool.
- Works with FullWAVE clustering to provide faster results.
- Incorporates an unpolarized incoherent light source.
- Outputs LED extraction efficiency and radiation patterns in addition to the standard FullWAVE output.
- Automated parameter studies and design optimization using MOST

**Applications :** LED design, LED extraction efficiency optimization, Studying effect of patterns on LED operation