caa a22 4500 445305363 CHVBK 20180317142611.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10762-011-9829-y doi (NATIONALLICENCE)springer-10.1007/s10762-011-9829-y Optimized Optical Rectification and Electro-optic Sampling in ZnTe Crystals with Chirped Femtosecond Laser Pulses [Elektronische Daten] [Dines Erschens, Dmitry Turchinovich, Peter Jepsen] We report on optimization of the intensity of THz signals generated and detected by optical rectification and electro-optic sampling in dispersive, nonlinear media. Addition of a negative prechirp to the femtosecond laser pulses used in the THz generation and detection processes in 1-mm thick ZnTe crystals leads to an increase of the THz intensity of more than 30% at low laser intensity and up to 60% at higher laser intensity. Dispersion compensation in the ZnTe crystal, which becomes significant for laser pulses with durations much less than 100fs, is responsible for the enhanced generation and detection efficiency at low excitation intensity, and our simulations indicate that two-photon absorption is responsible for the increased efficiency enhancement observed at high excitation intensity. Springer Science+Business Media, LLC, 2011 Ultrafast nonlinear optics nationallicence Chirping nationallicence Electro-optical materials nationallicence Far-infrared or terahertz nationallicence Erschens Dines DTU Fotonik - Department of Photonics Engineering, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark aut Turchinovich Dmitry DTU Fotonik - Department of Photonics Engineering, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark aut Jepsen Peter DTU Fotonik - Department of Photonics Engineering, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark aut Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/12(2011-12-01), 1371-1381 1866-6892 32:12<1371 2011 32 10762 https://doi.org/10.1007/s10762-011-9829-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10762-011-9829-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Erschens Dines DTU Fotonik - Department of Photonics Engineering, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark aut NATIONALLICENCE 700 1- Turchinovich Dmitry DTU Fotonik - Department of Photonics Engineering, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark aut NATIONALLICENCE 700 1- Jepsen Peter DTU Fotonik - Department of Photonics Engineering, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark aut NATIONALLICENCE 773 0- Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/12(2011-12-01), 1371-1381 1866-6892 32:12<1371 2011 32 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer