Tuchak AN, Gol’tsman GN, Kitaeva GK, Penin AN, Seliverstov SV, Finkel MI, et al. Generation of nanosecond terahertz pulses by the optical rectification method. JETP Lett. 2012;96(2):94–7.
Abstract: The possibility of the generation of quasi-cw terahertz radiation by the optical rectification method for broad-band Fourier unlimited nanosecond laser pulses has been experimentally demonstrated. The broadband radiation of a LiF dye-center laser is used as a pump source of a nonlinear optical oscillator. The energy efficiency of terahertz optical frequency conversion in a periodically polarized lithium niobate crystal is 4 × 10−9 at a pump power density of 7 MW/cm2.
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