Abstract-Generation of 0.9-mJ THz pulses in DSTMS pumped by a Cr:Mg2SiO4 laser

C. Vicario, A. V. Ovchinnikov, S. I. Ashitkov, M. B. Agranat, V. E. Fortov, and C. P. Hauri  »View Author Affiliations

http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-39-23-6632

Optics Letters, Vol. 39, Issue 23, pp. 6632-6635 (2014)
http://dx.doi.org/10.1364/OL.39.006632

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.

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