Methods of generating superbroadband terahertz pulses with femtosecond lasers

Беспалов В.Г., Городецкий А.А., Денисюк И.Ю., Козлов С.А., Крылов В.Н., Лукомский Г.В., Петров Н.В., Путилин С.Э. Методы генерации сверхширокополосных терагерцовых импульсов фемтосекундными лазерами // Оптический журнал. 2008. Т. 75. № 10. С. 34–41.

Bespalov V.G., Gorodetskiy A.A., Denisyuk I.Yu., Kozlov S.A., Krylov V.N., Lukomskiy G.V., Petrov N.V., Putilin S.E. Methods of generating superbroadband terahertz pulses with femtosecond lasers [in Russian] // Opticheskii Zhurnal. 2008. V. 75. № 10. P. 34–41.

V. G. Bespalov, A. A. Gorodetskiĭ, I. Yu. Denisyuk, S. A. Kozlov, V. N. Krylov, G. V. Lukomskiĭ, N. V. Petrov, and S. É. Putilin, "Methods of generating superbroadband terahertz pulses with femtosecond lasers," Journal of Optical Technology. 75 (10), 636-642 (2008). https://doi.org/10.1364/JOT.75.000636

This paper presents experimental results and an analysis of methods of generating terahertz (THz) radiation, using femtosecond laser sources: generation by photoconductive semiconductor antennas, nonlinear-optical generation of the difference frequency or optical rectification, and generation using optical breakdown in gases under the action of femtosecond pulses. An undoped semiconductor crystal of indium arsenide (InAs) located in a magnetic field, an electrooptic ZnTe crystal, an organic DAST crystal, and an optical spark in air were used as generators of THz radiation.