Announces version 2.0 of its LaserMOD simulation tool for active semiconductor devices with capabilities for VCSELs

January 28, 2004

2 Min Read

OSSINING, N.Y. -- RSoft Design Group, Inc., the market leader in optical design, simulation, and optimization software, has announced today the release of LaserMOD 2.0, a new version that now has design and simulation capabilities for Vertical Cavity Surface Emitting Lasers (VCSELs) and incorporates self-heating model. LaserMOD is an advanced simulation tool for active semiconductor devices, which combines the most versatile, user-friendly, and easy to learn GUI in the market with a powerful and robust simulation engine that determines the self-consistent solution of electro-thermal transport and optical field dynamics.

VCSELs have proven to be a cost efficient alternative to edge-emitting lasers, offering improved properties with respect to mode selectivity, fiber coupling, threshold currents, and integration into 2D arrays or with other electronic devices. State-of-the-art simulation tools are essential for modeling the subtle interactions between the physical processes that occur in these advanced laser structures. LaserMOD 2.0 provides comprehensive simulation capabilities for VCSEL. The user-friendly CAD interface provides a new distributed Bragg reflector (DBR) element to conveniently and intuitively layout VCSEL structures. A set of new simulation features have been added to meet the VCSEL simulation requirement. LaserMOD can perform full 3D VCSEL simulations quickly by taking advantage of the cylindrical symmetry of the device.

Several advanced models are available in this new release including self-heating, which can significantly affect VCSEL performance under CW operation. This feature treats the lattice heat flow equation self-consistently to determine the temperature distribution within the device resulting from heat sources such as Joule, recombination, Peltier, and Thomson heat. Quantum correction models for carrier transport across hetero-interfaces, such as tunneling and barrier lowering have also been added. These in particular are critical in VCSEL simulations to accurately predict the affect of the DBRs on electronic performance. Furthermore, a new Transfer Matrix based mode solver allows for fast computation of the cavity spectrum of eigenmodes.

RSoft Design Group Inc.

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