Transition from single-mode to multimode operation of an injection-seeded pulsed optical parametric oscillator

Richard T. White*, Yabai He, Brian J. Orr, Mitsuhiko Kono, K. G H Baldwin

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    39 Citations (Scopus)

    Abstract

    Optical-heterodyne measurements are made on ∼842-nm signal output of an injection-seeded optical parametric oscillator (OPO) based on periodically poled KTiOPO4 pumped at 532 nm by long (∼27-ns) pulses from a Nd:YAG laser. At low pump energies (≤ 2.5 times the free-running threshold), the narrowband tunable OPO output is single-longitudinal-mode (SLM) and frequency chirp can be <10 MHz, much less than the transform-limited optical bandwidth (∼17.5 MHz). We explore the transition from SLM operation to multimode operation as pump energy or phase mismatch are increased, causing unseeded cavity modes to build up later in the pulse.

    Original languageEnglish
    Pages (from-to)5655-5660
    Number of pages6
    JournalOptics Express
    Volume12
    Issue number23
    DOIs
    Publication statusPublished - 2004

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