Enhancing slow- and fast-light effects in quantum dot semiconductor waveguides through ultrafast dynamics

Yaohui Chen; Jesper Mørk

doi:10.1117/12.872866

21 February 2011 Enhancing slow- and fast-light effects in quantum dot semiconductor waveguides through ultrafast dynamics

Yaohui Chen, Jesper Mørk

Author Affiliations +

Proceedings Volume 7937, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XV; 793709 (2011) https://doi.org/10.1117/12.872866
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

In this paper we review our theoretical work on slow and fast light effects in quantum dot semiconductor optical amplifiers (QD SOAs), in particular we investigate the carrier dynamical contributions to the dynamic gain grating and cross gain modulation induced by unique ultrafast inter-subband carrier dynamics between discrete QD bound states. Our calculations predict that by increasing the injection current density, additional ultra-fast coherent gain contributions around 100GHz arise in contrast to the slow sub-gigahertz carrier density pulsation (CDP) effects. For potential applications in microwave photonics, especially targeting the millimeter wave range, we propose that quantum dot devices might be used to realize an optically fed microwave phase shifter in the frequency range of 100GHz.

Citation Download Citation

Yaohui Chen and Jesper Mørk "Enhancing slow- and fast-light effects in quantum dot semiconductor waveguides through ultrafast dynamics", Proc. SPIE 7937, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XV, 793709 (21 February 2011); https://doi.org/10.1117/12.872866

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