Terahertz Kerr effect
Author(s)Hoffmann, Matthias C.; Brandt, Nathaniel Curran; Hwang, Harold Young; Yeh, Ka-Lo; Nelson, Keith Adam
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We have observed optical birefringence in liquids induced by single-cycle terahertz pulses with field strengths exceeding 100 kV/cm. The induced change in polarization is proportional to the square of the terahertz electric field. The time-dependent terahertz Kerr signal is composed of a fast electronic response that follows the individual cycles of the electric field and a slow exponential response associated with molecular orientation.
DepartmentMassachusetts Institute of Technology. Department of Chemistry
Applied Physics Letters
American Institute of Physics
Hoffmann, Matthias C., Nathaniel C. Brandt, Harold Y. Hwang, Ka-Lo Yeh, and Keith A. Nelson. “Terahertz Kerr effect.” Applied Physics Letters 95, no. 23 (2009): 231105.