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Opt Express. 2007 Jul 9;15(14):9090-5.

Amplitude and phase noise sensitivity of modelocked Ti:sapphire lasers in terms of a complex noise transfer function.

Abstract

The amplitude and envelope phase noise of a modelocked laser are shown to depend directly on the pump laser amplitude stability. We characterize the sensitivity of this process by a noise transfer function which represents the complex amplitude-to-amplitude modulation (AM-AM) and amplitude-to-phase modulation (AM-PM) conversion gain of the pump-induced amplitude and phase noise, respectively. We find that a linearized laser model extrapolated from relaxation oscillation theory, combined with a thermal model, adequately describe the principal features of the response from <1 Hz to 10 MHz.

PMID:
19547248
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