Many-body and geometric confinement effects on THz laser gain in asymmetric quantum wells

Hai-Yan Zhu; Tong-Yi Zhang; Wei Zhao

doi:10.1117/12.822757

16 February 2009 Many-body and geometric confinement effects on THz laser gain in asymmetric quantum wells

Hai-Yan Zhu, Tong-Yi Zhang, Wei Zhao

Proceedings Volume 7277, Photonics and Optoelectronics Meetings (POEM) 2008: Terahertz Science and Technology; 72770W (2009) https://doi.org/10.1117/12.822757
Event: Photonics and Optoelectronics Meetings, 2008, Wuhan, China

Abstract

Considering the Coulomb many-body interactions, we theoretically investigate the terahertz optical gain spectrum in an asymmetric step quantum well by employing the intersubband semiconductor-Bloch equations (SBEs). We show the effects of various many-body interactions on the THz gain spectrum. Because of the pump-induced population redistribution, optical gain saturation at larger pump intensities is predicted. The dependence of optical gain on electron density, temperature is also explored in detail.

Citation Download Citation

Hai-Yan Zhu, Tong-Yi Zhang, and Wei Zhao "Many-body and geometric confinement effects on THz laser gain in asymmetric quantum wells", Proc. SPIE 7277, Photonics and Optoelectronics Meetings (POEM) 2008: Terahertz Science and Technology, 72770W (16 February 2009); https://doi.org/10.1117/12.822757

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