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Single-cycle scalable terahertz pulse source in reflection geometry

2019; Optica Publishing Group; Volume: 27; Issue: 21 Linguagem: Inglês

10.1364/oe.27.030681

1094-4087

György Tóth, László Pálfalvi, Zoltán Tibai, Levente Tokodi, J. A. Fülöp, Zsuzsanna Márton, Gábor Almási, János Hebling,

Pulsed Power Technology Applications

A tilted-pulse-front pumped terahertz pulse source is proposed for the generation of extremely high field single-cycle terahertz pulses. The very simple and compact source consists of a single crystal slab having a blazed reflection grating grooved in its back surface. Its further important advantages are the energy scalability and the symmetric THz beam profile. Generation of ∼50 MV/cm focused field with 10.8 mJ terahertz pulse energy is predicted for a 7 cm diameter LiNbO 3 crystal, if the pump pulse is of 870 mJ energy, 1030 nm central wavelength and 1 ps pulse duration. Such sources can decisively promote the realization of THz driven electron and proton accelerators and open the way for a new generation concept of terahertz pulses having extreme high field.