Feedback control of the intensity noise of injection locked lasers

Elanor H. Huntington*, Ben C. Buchler, Charles C. Harb, Timothy C. Ralph, David E. McClelland, Hans A. Bachor

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    We demonstrate close to optimum control of the intensity noise of a laser by combining the techniques of laser injection locking and negative electronic feedback. The greatly increased stability of the electronic feedback loop from the output of the slave laser to its pump source that can be obtained by injection locking the slave laser is used to strongly suppress the intensity noise of this laser. We simultaneously use the injection locked output to negatively feed back to an amplitude modulator in the master laser beam and, with both control loops running, we can demonstrate intensity noise suppression of the composite system to within 1 dB of the theoretical limit at 5 kHz.

    Original languageEnglish
    Pages (from-to)359-366
    Number of pages8
    JournalOptics Communications
    Volume145
    Issue number1-6
    DOIs
    Publication statusPublished - 1 Jan 1998

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