My responsabilities:

As Visiting Research Engineer in the group of Professor Coldren, I worked on the modeling of vertical cavity semiconductor optical amplifiers (VCSOAs). This type of device has the same structure as a VCSEL (Vertical cavity surface emitting laser), but it is used as an optical amplifier.

Main achievements:

• Cleared up an apparent discrepancy between previous modeling efforts reported by the scientific literature
• Published these results in peer reviewed scientific journals and presented them at the International conference of the IEEE Lasers and Electro- Optics Society, 2001, in San Diego USA

Publications:

• P. Royo, R. Koda, L. A. Coldren, “Vertical Cavity Semiconductor Optical Amplifiers: Comparison of Fabry-Perot and Rate Equation Approaches”, IEEE- Journal of Quantum Electronics, Vol. 38, No. 3, (2002), pp. 279 -284

• P. Royo, R. Koda, and L. A. Coldren, “Rate equations of vertical-cavity semiconductor optical amplifiers”, Applied Physics Letters, 80 (2002) pp. 3057-3059

Conference:

• Royo, R. Koda, L. A. Coldren, “Vertical Cavity Semiconductor Optical Amplifiers: Comparison of Fabry-Perot and Rate Equation Approaches”, 14th meeting of the IEEE Lasers & Electro-Optics Society, San Diego, California, USA Vol. 2, pp. 467-468, (2001)