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O‐Pil Kwon, Keith A. Nelson and co‐workers present a new class of nonlinear optical crystals in article number 1701748, introducing benzothiazolium. Exhibiting large macroscopic optical nonlinearity with optimal molecular ordering and suitable crystal characteristics for intense THz wave generation, which result in one order of magnitude higher THz wave generation efficiency with considerably broader...
Highly efficient nonlinear optical organic crystals are very attractive for various photonic applications including terahertz (THz) wave generation. Up to now, only two classes of ionic crystals based on either pyridinium or quinolinium with extremely large macroscopic optical nonlinearity have been developed. This study reports on a new class of organic nonlinear optical crystals introducing electron‐accepting...
Terahertz fields reaching MV/cm levels induce nonlinear responses in a wide range of materials. Highly nonlinear electronic and structural phase transitions and coherent control over multiple gas-phase rotational coherences will be highlighted.
Molecular orientation is now feasible through the interaction of gas phase polar molecules with intense single-cycle THz fields. We explore the effects of resonant multi-rotational level excitation on the molecular angular distribution.
High power single- and multi-cycle terahertz (THz) pulses have been generated with the tilted intensity front scheme in lithium niobate crystal, with more than 50 μJ and 10 μJ pulse energy respectively.
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