RSoft Design Group adds VCSEL and self-heating simulation to LaserMOD software

27 January 2004 Ossining, NY Lightwave--RSoft Design Group is introducing LaserMOD 2.0 today. The new version of the simulation tool for active semiconductor devices adds vertical-cavity surface-emitting laser (VCSEL) simulation capabilities and incorporates a selfheating model.

LaserMOD combines a versatile, easy to learn GUI with a powerful 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 2-D 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 VCSELs. The user-friendly CAD interface provides a new distributed Bragg reflector (DBR) element to layout VCSEL structures. Simulation features have been added to meet the VCSEL simulation requirement. LaserMOD can perform full 3-D 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 features 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.

A variety of other new features are available, for both VCSEL and edge-emitter simulation. The promotional price for LaserMOD 2.0 is available before March 31, 2004. The RSoft Design Group is exhibiting this week at Photonics West 2004 in San Jose, CA, January 27-29, Booth 5036.