Spectral width of laser generation in quantum dot lasers: An analytical approach |
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| Authors: | A. V. Savelyev M. V. Maximov A. E. Zhukov |
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| Affiliation: | 1.Russian Academy of Sciences,St. Petersburg Academic University—Nanotechnology Research and Education Center,St. Petersburg,Russia;2.St. Petersburg State Polytechnical University,St. Petersburg,Russia;3.Ioffe Physical Technical Institute,Russian Academy of Sciences,St. Petersburg,Russia |
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| Abstract: | An analytical approach to description of broad spectra of lasing in quantum-dot lasers has been developed. It is shown that the spectral width of the laser generation is determined by three parameters: the spectral width of the gain spectrum, homogeneous broadening of the line, and the effective parameter of the gain saturation. As a result, the dependence of the spectral width of lasing on the laser output power is shown to be universal and can be described as a function of a single dimensionless parameter. |
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