## Analysis of Relative Intensity Noise Spectra for Uniformly and Chirpily Stacked InAs–InGaAs–GaAs Quantum Dot Lasers

Journal of Lightwave Technology, Vol. 30, Issue 3, pp. 331-336 (2012)

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### Abstract

The dynamic properties of uniformly and chirpily stacked InAs–InGaAs–GaAs quantum
dot lasers are analyzed in terms of relative intensity noise spectra. For uniformly
stacked quantum dot laser with ground-state lasing emissions of 1.3 μm, the
*K*-factor limited bandwidth is 13 GHz. The extracted differential gain and gain
compression factor are 1.7 × 10^{-15} cm^{2} and 2 × 10^{-16} cm^{3},
respectively. For chirpily stacked quantum dot laser with excited-state lasing emissions
of 1.2 μm, the *K*-factor limited bandwidth is 14 GHz. Yet the nonproportional
dependence between resonance frequency and square root of incremental current yields
differential gain of 4.3 × 10^{-15} cm^{2} and huge gain compression factor of
1.4 × 10^{-14} cm^{3}.

© 2011 IEEE

**Citation**

Gray Lin, Hao-Ling Tang, Hsu-Chieh Cheng, and Hung-Lin Chen, "Analysis of Relative Intensity Noise Spectra for Uniformly and Chirpily Stacked
InAs–InGaAs–GaAs Quantum Dot Lasers," J. Lightwave Technol. **30**, 331-336 (2012)

http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-30-3-331

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