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High energy femtosecond OPA pumped by 1030 nm Yb:KGW laser.
Authors:V Kozich  A Moguilevski  K Heyne
Institution:1. Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan;2. Department of Bioinformatics, Graduate School of Engineering, Soka University, Hachioji, Tokyo 192-8577, Japan;1. Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;2. Analytical Science Research Laboratories, Kao Corporation, 2606 Akabane, Ichikai-Machi, Haga-Gun, Tochigi 321-3497, Japan;3. Institute of Applied Physics, University of Tsukuba, 1-1-1 Tenodai, Tsukuba, Ibaraki 305-8573, Japan;4. Institut de Recherche XLIM, UMR CNRS No. 7252, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France;5. LEUKOS, ESTER Technopole, 1 Avenue d’Ester, 87069 Limoges Cedex, France;6. Institute of Molecular Science and Department of Applied Chemistry, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 300, Taiwan;1. Department of Chemistry and Materials Science, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8551, Japan;2. Department of Materials Science and Technology, Faculty of Engineering, and Center for Transdisciplinary Research, Niigata University, 8050 Ikarashi-2, Niigata 950-2181, Japan;3. Interactive Research Center of Science, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8502, Japan;4. PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;1. Department of Physics, Faculty of Science, Cankiri Karatekin University, Cankiri, 18100, Turkey;2. Department of Physics and Astronomy, Texas A&M University, College Station, TX, 77843-4242, USA;3. Science Program, Texas A&M University at Qatar, Doha, 23874, Qatar
Abstract:We present a traveling-wave-type optical parametric amplifier (OPA) pumped at 1.03 μm by a Yb:KGW laser that produces tunable high-energy pulses of 6.5–4 μJ in the mid-infrared (mid-IR) region from 3.6 to 7 μm. Pumping with negatively chirped pulses generates nearly transform-limited (TL) mid-IR pulses of 300–330 fs length. Pumping with TL pulses of 200 fs not only decreases the output energy by a factor of 1.5, but also decreases the mid-IR pulse-length to 160 fs after additional compression. The compact and simple OPA setup is ideal for femtosecond infrared experiments in the fingerprint region.
Keywords:
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