Saturation of absorption and gain in a quantum dot diode with continuous-wave driving

Tierno, A. and Ackemann, T. and Leburn, C. G. and Brown, C. T. A. (2010) Saturation of absorption and gain in a quantum dot diode with continuous-wave driving. Applied Physics Letters, 97 (23). 231104. ISSN 0003-6951 (https://doi.org/10.1063/1.3524824)

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Abstract

We have observed saturation of absorption and gain in ensembles of InAs/GaAs self-assembled quantum dots at room temperature with continuous-wave driving in the 1.24-1.28 mu m wavelength range. The saturation intensity was found to be I-sat=(1.4-4.5) X 10(9) W/m(2) in absorption and I-sat =(0.2-3.8)X10(9) W/m(2) in gain, depending on the detuning. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3524824]