2016/09/15 by Tsuneto Kanai, Pavel Malevich, Kanai, Tsuneto +11
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Laser-Matter Interactions and Applications #Optics (physics.optics) #Solid State Laser Technologies
paper · pdf · doi:10.48550/arxiv.1609.04555
openalex publication_date 2016/09/15 · openalex created_date 2016/09/30 · openalex updated_date 2026/07/28
We report a 1 kHz repetition-rate mid-IR (MIR) optical parametric amplifier (OPA) system operating at a central wavelength of 5.2 μm with the tail-to-tail spectrum extending over 1.5 μm and delivering 40 μJ pulses that are compressed to 99 fs (5.6 optical cycles). Also we develop a novel pulse compression scheme for further pulse compression and wavelength tunability. As the first application of this laser system, we generated high harmonics in bulk ZnSe above the bandgap, dense exciton generation after 10-photon absorption, high order sum- and difference-frequency generation, ultrafast transition in the conduction band, which reflects the structure of conduction bands.