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Suppression of Linewidth Enhancement Factor in High-coherence Heterogeneously Integrated Silicon/III-V Lasers

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We observe a relaxation resonance frequency of hundreds of MHz in high-coherence Si/III-V lasers, up to 5x less than commercial III-V lasers. This results in very noise frequency noise PSD of 720 Hz2/Hz above the relaxation resonance frequency due to the suppression of linewidth enhancement factor.

© 2017 Optical Society of America

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