title: Generation of 0.9-mJ THz pulses in DSTMS pumped by a Cr:Mg₂SiO₄ laser.
abstract: We report on high-field terahertz transients with 0.9-mJ pulse energy produced in a 400  mm² partitioned organic crystal by optical rectification of a 30-mJ laser pulse centered at 1.25 μm wavelength. The phase-locked single-cycle terahertz pulses cover the hard-to-access low-frequency range between 0.1 and 5 THz and carry peak fields of more than 42 MV/cm and 14 Tesla with the potential to reach over 80 MV/cm by choosing appropriate focusing optics. The scheme based on a Cr:Mg₂SiO₄ laser offers a high conversion efficiency of 3% using uncooled organic crystal. The collimated pump laser configuration provides excellent terahertz focusing conditions.
authors.forename: C
authors.initials: C
authors.lastname: Vicario
authors.forename: A V
authors.initials: AV
authors.lastname: Ovchinnikov
authors.forename: S I
authors.initials: SI
authors.lastname: Ashitkov
authors.forename: M B
authors.initials: MB
authors.lastname: Agranat
authors.forename: V E
authors.initials: VE
authors.lastname: Fortov
authors.forename: C P
authors.initials: CP
authors.lastname: Hauri