Broadband Electromagnetic Wave Emission from an Atomic Cluster Plasma Produced by Femtosecond Laser Pulses: From X-Ray to Terahertz Wavelengths
The aim of the present work is an experimental study of broadband electromagnetic wave emission from gas cluster beam excited by ultrashort (~100 fs), high-intense (~1016 W/cm2) laser pulses. Cluster beam was produced by partial condensation of gaseous argon during its expansion through a conical nozzle into the vacuum chamber. Two color excitation scheme was used: laser beam combined fundamental frequency and its second harmonic. We observed and studied simultaneous generation of terahertz and X-ray radiation in the atomic cluster plasma.
KeywordsTerahertz Radiation Terahertz Wave Terahertz Pulse Simultaneous Generation Input Optical Pulse
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