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Modulation response of nanoLEDs and nanolasers exploiting Purcell enhanced spontaneous emission
1DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads 343, DK2800 Kgs., Lyngby, Denmark. suhr@fotonik.dtu.dk
Abstract:
The modulation bandwidth of quantum well nanoLED and nanolaser devices is calculated from the laser rate equations using a detailed model for the Purcell enhanced spontaneous emission. It is found that the Purcell enhancement saturates when the cavity quality-factor is increased, which limits the maximum achievable spontaneous recombination rate. The modulation bandwidth is thereby limited to a few tens of GHz for realistic devices.
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