Kovacs effect enhanced broadband large field of view electro-optic modulators in nanodisordered KTN crystals

Yun Ching Chang, Chao Wang, Shizhuo Yin, Robert C. Hoffman, Andrew G. Mott

    Research output: Contribution to journalArticlepeer-review

    41 Scopus citations

    Abstract

    The unique physical effect-Kovacs effect is explored to enhance the performance of EO modulators by employing the non-thermal equilibrium state nanodisordered KTN crystals created by super-cooling process, which can have a significant 3.5 fold increase in quadratic electro-optic coefficient. This enables to reduce the switching half wave voltage (almost by half) so that a broadband (~GHz range) and large field of view (+/-30 deg) electro-optic modulator can be realized with much lowered driving power, which can be very useful for a variety of applications: laser Q-switches, laser pulse shaping, high speed optical shutters and modulating retro reflectors.

    Original languageEnglish (US)
    Pages (from-to)17760-17768
    Number of pages9
    JournalOptics Express
    Volume21
    Issue number15
    DOIs
    StatePublished - Jul 29 2013

    All Science Journal Classification (ASJC) codes

    • Atomic and Molecular Physics, and Optics

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