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Title: Microscopic analysis on optical gain of terahertz quantum cascade lasers
Authors: Liu, Tao
Wang, Qi Jie
Lee, Kenneth E.
Issue Date: 2012
Source: Liu, T., Lee, K. E., & Wang, Q. J. (2012). Microscopic analysis on optical gain of terahertz quantum cascade lasers. 2012 Photonics Global Conference (PGC).
Abstract: The effects of many-body coulomb interaction and non-parabolicity on optical gain of terahertz quantum cascade lasers are investigated based on the density-matrix model. The results show that many-body interaction and non-parabolicity effect all red-shift the gain spectrum and reduces the peak value. Furthermore, the interplay of various many-body effects that reveals the optical spectral redshift and reduction are mainly caused by the depolarization terms. The proposed model provides a comprehensive picture of optical properties of THz QCLs, not only enhancing our in-depth understanding of optical gain, but also enabling an accurate prediction of the device performance.
DOI: 10.1109/PGC.2012.6457998
Rights: © 2012 IEEE.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Conference Papers

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