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Terahertz death ray

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4 Author(s)
Hebling, J. ; Massachusetts Inst. of Technol., Cambridge, MA ; Yeh, Ka-Lo ; Hoffmann, M.C. ; Nelson, K.A.

Generation of near single-cycle pulses centered at 0.5 THz frequency with up to 10 muJ energy, 100 muW average power, and 5.0 MW peak power was demonstrated by tilting the intensity front of a femtosecond optical pump pulse from a 10 Hz Ti: sapphire laser to match the phonon-polariton phase velocity to the group velocity of the pump pulses in a lithium niobate crystal. THz pulse intensity as high as 10 MW/cm2 was achieved. The photon conversion efficiency was 45% and the calculated peak electric field strength at the focus of an off-axis parabolic mirror was 600 kV/cm.

Published in:

Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on

Date of Conference:

2-9 Sept. 2007