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Narrowband terahertz generation with chirped-and-delayed laser pulses in periodically poled lithium niobate

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Ahr,  Frederike
International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Deutsches Elektronen Synchrotron (DESY) & Center for Free-Electron Laser Science, Notkestrasse 85, 22607 Hamburg, Germany ;
Department of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany ;

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Citation

Ahr, F., Jolly, S. W., Matlis, N. H., Carbajo, S., Kroh, T., Ravi, K., et al. (2017). Narrowband terahertz generation with chirped-and-delayed laser pulses in periodically poled lithium niobate. Optics Letters, 42(11), 2118-2121. doi:10.1364/OL.42.002118.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-D7B0-8
Abstract
We generate narrowband terahertz (THz) radiation in periodically poled lithium niobate (PPLN) crystals using two chirped-and-delayed driver pulses from a high-energy Ti:sapphire laser. The generated frequency is determined by the phase-matching condition in the PPLN and influences the temporal delay of the two pulses for efficient terahertz generation. We achieve internal conversion efficiencies up to 0.13% as well as a record multicycle THz energy of 40 μJ at 0.544 THz in a cryogenically cooled PPLN.