Abstract
The linewidth enhancement (α factor) due to fluctuations in the refractive index induced by carrier fluctuations of intersubband lasers was initially expected to be zero. However, values ranging from −0.5 to 3 have been found experimentally. For laser without inversion conditions, which have potential for the high temperature operation of terahertz lasers, α is found to be larger, but still at the same order of magnitude of conventional inverted medium lasers and this paper further investigates this case for dilute nitride quantum well structures.
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Pereira, M.F. (2017). The Linewidth Enhancement Factor of Dilute Nitride Intersubband Lasers Without Inversion. In: Pereira, M., Shulika, O. (eds) THz for CBRN and Explosives Detection and Diagnosis. NATO Science for Peace and Security Series B: Physics and Biophysics. Springer, Dordrecht. https://doi.org/10.1007/978-94-024-1093-8_22
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DOI: https://doi.org/10.1007/978-94-024-1093-8_22
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