Ultrafast electron dynamics in InGaAlAs/InP graded-gap electron transfer optical modulator structures

摘要

We report ultrafast electron dynamics in InGaAlAs/InP graded-gap electron transfer optical modulator structures with time constants on the order of 1 picosecond. This should be compared with the previous best values for the standard electron transfer structures in the range of 17-55 picoseconds. All other properties important for high speed applications, for example, electroabsorption and electrical behavior remain essentially unaffected.