High peak-power mid-infrared ZnGeP2 optical parametric oscillator pumped by a Tm:fiber master oscillator power amplifier system

    Authors

    M. Gebhardt; C. Gaida; P. Kadwani; A. Sincore; N. Gehlich; C. Jeon; L. Shah;M. Richardson

    Comments

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    Abbreviated Journal Title

    Opt. Lett.

    Keywords

    PHOTONIC CRYSTAL FIBER; LASER; Optics

    Abstract

    We report on the utilization of a novel Tm:fiber laser source for mid-IR ZnGeP2 (ZGP) optical parametric oscillator (OPO) pumping. The pump laser is built in a master oscillator power-amplifier configuration delivering up to 3.36 W of polarized, diffraction limited output power with 7 ns pulse duration and 4 kHz repetition rate. This corresponds to a peak power of similar to 121 kW and a pulse energy of similar to 0.84 mJ. With this source, we generated 27.9 kW of total mid-IR peak power in a doubly resonant oscillator (DRO) configuration. This is, to the best of our knowledge, the highest ever demonstrated mid-IR peak power from a directly Tm: fiber laser pumped ZGP OPO. Moreover, a DRO output with about 284 mu J of total mid-IR pulse energy was demonstrated using 100 ns pump pulses. The wavelength tuning of the idler was extended to 6 mu m with lower output power in another OPO experiment. (C) 2014 Optical Society of America

    Journal Title

    Optics Letters

    Volume

    39

    Issue/Number

    5

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    1212

    Last Page

    1215

    WOS Identifier

    WOS:000332233300028

    ISSN

    0146-9592

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