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    High-pulse-energy mid-infrared fractional-image-rotation-enhancement ZnGeP2 optical parametric oscillator

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    1359129.pdf (1.195Mb)
    Date
    2016
    Author
    Eichhorn, Marc
    Schellhorn, Martin
    Haakestad, Magnus W.
    Fonnum, Helge
    Lippert, Espen
    Metadata
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    Abstract
    A high-energy mid-infrared ZnGeP 2 (ZGP) optical parametric oscillator (OPO) based on the nonplanar fractional-image-rotation enhancement resonator pumped by a 2.05 μm Ho 3+ :YLF laser is presented. Up to 120 mJ pulse energy in a rotationally symmetric beam is generated in the 3–5 μm wavelength range at 1 Hz repetition rate. Slope efficiencies of up to 78% are achieved with respect to the pump pulse energy incident onto the ZGP crystal. The OPO pulses have a duration close to 15 ns, corresponding to a maximum peak power of 8 MW. A measurement of 𝑀 2 dependence on pump beam diameter is presented.
    URI
    http://ffi-publikasjoner.archive.knowledgearc.net/123456789/518
    DOI
    10.1364/OL.41.002596
    Description
    Eichhorn, Marc; Schellhorn, Martin; Haakestad, Magnus W.; Fonnum, Helge; Lippert, Espen. High-pulse-energy mid-infrared fractional-image-rotation-enhancement ZnGeP2 optical parametric oscillator. Optics Letters 2016 ;Volum 41.(11) s. 2596-2599
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