Browsing NTNU Open by Author "Pospischil, Andreas"

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    • Graphene mode-locked Cr: ZnS chirped-pulse oscillator 

      Tolstik, Nikolai; Pospischil, Andreas; Sorokin, Evgeni; Sorokina, Irina T (Journal article; Peer reviewed, 2014)
      We report the first to our knowledge high-energy graphene mode-locked solid-state laser operating in the positive dispersion regime. Pulses with 15.5 nJ energy and 42 nm spectral bandwidth with 0.87 ps duration were obtained ...

    • Graphene mode-locked Cr:ZnS laser with 44 fs pulse duration 

      Tolstik, Nikolai; Pospischil, Andreas; Sorokin, E.; Sorokina, Irina T (Chapter, 2013)
      The first Cr:ZnS laser mode-locked by graphene-based saturable absorber mirror generates the shortest reported so far mid-IR pulses of only 5.5 optical cycles (44 fs) at 2.35 μm with 139 nm spectral bandwidth.